Upstream information
Description
python-cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Prior to 49.0.0, when resolving invalid certificate chains that include duplicate copies of self-signed certificates, the processing recursively invokes the same candidate, leading to an exponential blowup. Although the limitation that the chain depth cannot exceed a specified maximum depth prevents unbounded recursion and guarantees termination, an attacker-controlled certificate chain can lead the processing to easily take more than 5s to reject in testing. This amplification could form the basis for a resource exhaustion denial of service attack. The core issue arises in the recursive nature of build_chain_inner, which does not de-duplicate against previously analyzed candidates. As the correctness of validation is not affected, the integrity of a system cannot be compromised through this vector, only its availability. This issue is fixed in 49.0.0.SUSE information
Overall state of this security issue: Pending
This issue is currently rated as having moderate severity.
| CVSS detail | SUSE |
|---|---|
| Base Score | 5.3 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
| Attack Vector | Network |
| Attack Complexity | Low |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality Impact | None |
| Integrity Impact | None |
| Availability Impact | Low |
| CVSSv3 Version | 3.1 |
| CVSS detail | CNA (GitHub) | SUSE |
|---|---|---|
| Base Score | 8.7 | 6.9 |
| Vector | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N |
| Attack Vector | Network | Network |
| Attack Complexity | Low | Low |
| Attack Requirements | None | None |
| Privileges Required | None | None |
| User Interaction | None | None |
| Vulnerable System Confidentiality Impact | None | None |
| Vulnerable System Integrity Impact | None | None |
| Vulnerable System Availability Impact | High | Low |
| Subsequent System Confidentiality Impact | None | None |
| Subsequent System Integrity Impact | None | None |
| Subsequent System Availability Impact | None | None |
| CVSSv4 Version | 4.0 | 4.0 |
Status of this issue by product and package
Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.
| Product(s) | Source package | State |
|---|---|---|
| Products under general support and receiving all security fixes. | ||
| SUSE Linux Enterprise Desktop 15 SP7 | python-cryptography | Not affected |
| SUSE Linux Enterprise Desktop 15 SP7 | python3-cryptography | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP7 | python-cryptography | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP7 | python3-cryptography | Not affected |
| SUSE Linux Enterprise Micro 5.3 | python3-cryptography | Not affected |
| SUSE Linux Enterprise Micro 5.4 | python3-cryptography | Not affected |
| SUSE Linux Enterprise Micro 5.5 | python3-cryptography | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP7 | python3-cryptography | Not affected |
| SUSE Linux Enterprise Module for Python 3 15 SP7 | python-cryptography | Not affected |
| SUSE Linux Enterprise Server 15 SP7 | python-cryptography | Not affected |
| SUSE Linux Enterprise Server 15 SP7 | python3-cryptography | Not affected |
| SUSE Linux Enterprise Server 16.0 | python-cryptography | Affected |
| SUSE Linux Enterprise Server 16.1 | python-cryptography | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | python-cryptography | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | python3-cryptography | Not affected |
| SUSE Linux Enterprise Server for SAP applications 16.0 | python-cryptography | Affected |
| SUSE Linux Enterprise Server for SAP applications 16.1 | python-cryptography | Affected |
| SUSE Linux Micro 6.0 | python-cryptography | Affected |
| SUSE Linux Micro 6.1 | python-cryptography | Affected |
| SUSE Linux Micro 6.2 | python-cryptography | Affected |
| SUSE Manager Client Tools 12 | venv-salt-minion | Not affected |
| SUSE Manager Client Tools 15 | venv-salt-minion | Not affected |
| SUSE Manager Client Tools for Debian 12 | venv-salt-minion | Not affected |
| SUSE Manager Client Tools for RHEL, Liberty and Clones 9 | venv-salt-minion | Not affected |
| SUSE Manager Client Tools for RHEL, Liberty and Clones 9-CLIENT-TOOLS | venv-salt-minion | Not affected |
| SUSE Manager Client Tools for SLE 12 | venv-salt-minion | Not affected |
| SUSE Manager Client Tools for SLE 15 | venv-salt-minion | Not affected |
| SUSE Manager Client Tools for SLE Micro 5 | venv-salt-minion | Not affected |
| SUSE Manager Client Tools for Ubuntu 2204 | venv-salt-minion | Not affected |
| SUSE Multi-Linux Manager Client Tools for SLE 12 | venv-salt-minion | Not affected |
| SUSE Multi-Linux Manager Client Tools for SLE 15 | venv-salt-minion | Not affected |
| SUSE Multi-Linux Manager Client Tools for SLE Micro 5 | venv-salt-minion | Not affected |
| SUSE Multi-Linux Manager Client Tools for Ubuntu 2204 | venv-salt-minion | Not affected |
| SUSE Multi-Linux Manager Client Tools for Ubuntu 2404 | venv-salt-minion | Not affected |
| openSUSE Leap 16.0 | python-cryptography | Affected |
| Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
| SUSE Linux Enterprise High Performance Computing 12 SP5 | python-cryptography | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4 | python-cryptography | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4 | python3-cryptography | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | python-cryptography | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | python3-cryptography | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5 | python-cryptography | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5 | python3-cryptography | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | python-cryptography | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | python3-cryptography | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP4 | python3-cryptography | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP5 | python3-cryptography | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP6 | python3-cryptography | Not affected |
| SUSE Linux Enterprise Module for Public Cloud 15 SP4 | python-cryptography | Not affected |
| SUSE Linux Enterprise Module for Python 3 15 SP4 | python-cryptography | Not affected |
| SUSE Linux Enterprise Module for Python 3 15 SP5 | python-cryptography | Not affected |
| SUSE Linux Enterprise Module for Python 3 15 SP6 | python-cryptography | Not affected |
| SUSE Linux Enterprise Server 12 SP5 | python-cryptography | Not affected |
| SUSE Linux Enterprise Server 12 SP5-LTSS | python-cryptography | Not affected |
| SUSE Linux Enterprise Server 12 SP5-LTSS Extended Security | python-cryptography | Not affected |
| SUSE Linux Enterprise Server 15 SP4 | python-cryptography | Not affected |
| SUSE Linux Enterprise Server 15 SP4 | python3-cryptography | Not affected |
| SUSE Linux Enterprise Server 15 SP4-LTSS | python-cryptography | Not affected |
| SUSE Linux Enterprise Server 15 SP4-LTSS | python3-cryptography | Not affected |
| SUSE Linux Enterprise Server 15 SP5 | python-cryptography | Not affected |
| SUSE Linux Enterprise Server 15 SP5 | python3-cryptography | Not affected |
| SUSE Linux Enterprise Server 15 SP5-LTSS | python-cryptography | Not affected |
| SUSE Linux Enterprise Server 15 SP5-LTSS | python3-cryptography | Not affected |
| SUSE Linux Enterprise Server 15 SP6 | python-cryptography | Not affected |
| SUSE Linux Enterprise Server 15 SP6 | python3-cryptography | Not affected |
| SUSE Linux Enterprise Server 15 SP6-LTSS | python-cryptography | Not affected |
| SUSE Linux Enterprise Server 15 SP6-LTSS | python3-cryptography | Not affected |
| SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 | python-cryptography | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | python-cryptography | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | python3-cryptography | Not affected |
| SUSE Manager Proxy 4.3 | python-cryptography | Not affected |
| SUSE Manager Proxy 4.3 | python3-cryptography | Not affected |
| SUSE Manager Proxy LTS 4.3 | python3-cryptography | Not affected |
| SUSE Manager Proxy LTS 4.3 | venv-salt-minion | Not affected |
| SUSE Manager Proxy Module 4.3 | venv-salt-minion | Not affected |
| SUSE Manager Retail Branch Server 4.3 | python-cryptography | Not affected |
| SUSE Manager Retail Branch Server 4.3 | python3-cryptography | Not affected |
| SUSE Manager Retail Branch Server LTS 4.3 | python3-cryptography | Not affected |
| SUSE Manager Server 4.3 | python-cryptography | Not affected |
| SUSE Manager Server 4.3 | python3-cryptography | Not affected |
| SUSE Manager Server LTS 4.3 | python3-cryptography | Not affected |
| SUSE Manager Server LTS 4.3 | venv-salt-minion | Not affected |
| SUSE Manager Server Module 4.3 | venv-salt-minion | Not affected |
| Products past their end of life and not receiving proactive updates anymore. | ||
| HPE Helion OpenStack 8 | python-cryptography | Not affected |
| SUSE CaaS Platform 3.0 | python-cryptography | Not affected |
| SUSE CaaS Platform 4.0 | python-cryptography | Not affected |
| SUSE Enterprise Storage 6 | python-cryptography | Not affected |
| SUSE Enterprise Storage 7 | python-cryptography | Not affected |
| SUSE Enterprise Storage 7.1 | python-cryptography | Not affected |
| SUSE Linux Enterprise Desktop 12 SP2 | python-cryptography | Not affected |
| SUSE Linux Enterprise Desktop 12 SP3 | python-cryptography | Not affected |
| SUSE Linux Enterprise Desktop 12 SP4 | python-cryptography | Not affected |
| SUSE Linux Enterprise Desktop 15 SP1 | python-cryptography | Not affected |
| SUSE Linux Enterprise Desktop 15 SP2 | python-cryptography | Not affected |
| SUSE Linux Enterprise Desktop 15 SP3 | python-cryptography | Not affected |
| SUSE Linux Enterprise Desktop 15 SP4 | python-cryptography | Not affected |
| SUSE Linux Enterprise Desktop 15 SP4 | python3-cryptography | Not affected |
| SUSE Linux Enterprise Desktop 15 SP5 | python-cryptography | Not affected |
| SUSE Linux Enterprise Desktop 15 SP5 | python3-cryptography | Not affected |
| SUSE Linux Enterprise Desktop 15 SP6 | python-cryptography | Not affected |
| SUSE Linux Enterprise Desktop 15 SP6 | python3-cryptography | Not affected |
| SUSE Linux Enterprise High Performance Computing 12 SP2 | python-cryptography | Not affected |
| SUSE Linux Enterprise High Performance Computing 12 SP3 | python-cryptography | Not affected |
| SUSE Linux Enterprise High Performance Computing 12 SP4 | python-cryptography | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1 | python-cryptography | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS | python-cryptography | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS | python-cryptography | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2 | python-cryptography | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS | python-cryptography | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | python-cryptography | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3 | python-cryptography | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS | python-cryptography | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | python-cryptography | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | python-cryptography | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | python3-cryptography | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | python-cryptography | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | python3-cryptography | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP6 | python-cryptography | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP6 | python3-cryptography | Not affected |
| SUSE Linux Enterprise Micro 5.0 | python-cryptography | Not affected |
| SUSE Linux Enterprise Micro 5.1 | python-cryptography | Not affected |
| SUSE Linux Enterprise Micro 5.2 | python-cryptography | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP1 | python-cryptography | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP2 | python-cryptography | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP3 | python-cryptography | Not affected |
| SUSE Linux Enterprise Module for Public Cloud 15 SP1 | python-cryptography | Not affected |
| SUSE Linux Enterprise Module for Python 2 15 SP2 | python-cryptography | Not affected |
| SUSE Linux Enterprise Module for Python 2 15 SP3 | python-cryptography | Not affected |
| SUSE Linux Enterprise Point of Sale 12 SP2-CLIENT | python-cryptography | Not affected |
| SUSE Linux Enterprise Real Time 15 SP2 | python-cryptography | Not affected |
| SUSE Linux Enterprise Real Time 15 SP3 | python-cryptography | Not affected |
| SUSE Linux Enterprise Real Time 15 SP4 | python3-cryptography | Not affected |
| SUSE Linux Enterprise Server 12 SP2 | python-cryptography | Not affected |
| SUSE Linux Enterprise Server 12 SP2-BCL | python-cryptography | Not affected |
| SUSE Linux Enterprise Server 12 SP2-ESPOS | python-cryptography | Not affected |
| SUSE Linux Enterprise Server 12 SP2-LTSS | python-cryptography | Not affected |
| SUSE Linux Enterprise Server 12 SP3 | python-cryptography | Not affected |
| SUSE Linux Enterprise Server 12 SP3-BCL | python-cryptography | Not affected |
| SUSE Linux Enterprise Server 12 SP3-ESPOS | python-cryptography | Not affected |
| SUSE Linux Enterprise Server 12 SP3-LTSS | python-cryptography | Not affected |
| SUSE Linux Enterprise Server 12 SP4 | python-cryptography | Not affected |
| SUSE Linux Enterprise Server 12 SP4-ESPOS | python-cryptography | Not affected |
| SUSE Linux Enterprise Server 12 SP4-LTSS | python-cryptography | Not affected |
| SUSE Linux Enterprise Server 15 SP1 | python-cryptography | Not affected |
| SUSE Linux Enterprise Server 15 SP1-BCL | python-cryptography | Not affected |
| SUSE Linux Enterprise Server 15 SP1-LTSS | python-cryptography | Not affected |
| SUSE Linux Enterprise Server 15 SP2 | python-cryptography | Not affected |
| SUSE Linux Enterprise Server 15 SP2-BCL | python-cryptography | Not affected |
| SUSE Linux Enterprise Server 15 SP2-LTSS | python-cryptography | Not affected |
| SUSE Linux Enterprise Server 15 SP3 | python-cryptography | Not affected |
| SUSE Linux Enterprise Server 15 SP3-BCL | python-cryptography | Not affected |
| SUSE Linux Enterprise Server 15 SP3-LTSS | python-cryptography | Not affected |
| SUSE Linux Enterprise Server for Raspberry Pi 12 SP2 | python-cryptography | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP2 | python-cryptography | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP3 | python-cryptography | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP4 | python-cryptography | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP1 | python-cryptography | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP2 | python-cryptography | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP3 | python-cryptography | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | python-cryptography | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | python3-cryptography | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | python-cryptography | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | python3-cryptography | Not affected |
| SUSE Manager Proxy 4.0 | python-cryptography | Not affected |
| SUSE Manager Proxy 4.1 | python-cryptography | Not affected |
| SUSE Manager Proxy 4.2 | python-cryptography | Not affected |
| SUSE Manager Retail Branch Server 4.0 | python-cryptography | Not affected |
| SUSE Manager Retail Branch Server 4.1 | python-cryptography | Not affected |
| SUSE Manager Retail Branch Server 4.2 | python-cryptography | Not affected |
| SUSE Manager Server 4.0 | python-cryptography | Not affected |
| SUSE Manager Server 4.1 | python-cryptography | Not affected |
| SUSE Manager Server 4.2 | python-cryptography | Not affected |
| SUSE OpenStack Cloud 7 | python-cryptography | Not affected |
| SUSE OpenStack Cloud 8 | python-cryptography | Not affected |
| SUSE OpenStack Cloud 9 | python-cryptography | Not affected |
| SUSE OpenStack Cloud Crowbar 8 | python-cryptography | Not affected |
| SUSE OpenStack Cloud Crowbar 9 | python-cryptography | Not affected |
| openSUSE Leap 15.3 | python-cryptography | Not affected |
| openSUSE Leap 15.4 | python-cryptography | Not affected |
| openSUSE Leap 15.4 | python3-cryptography | Not affected |
| openSUSE Leap 15.5 | python-cryptography | Not affected |
| openSUSE Leap 15.5 | python3-cryptography | Not affected |
| openSUSE Leap 15.6 | python-cryptography | Not affected |
| openSUSE Leap 15.6 | python3-cryptography | Not affected |
| openSUSE Leap Micro 5.2 | python-cryptography | Not affected |
| openSUSE Leap Micro 5.3 | python3-cryptography | Not affected |
| openSUSE Leap Micro 5.4 | python3-cryptography | Not affected |
| openSUSE Leap Micro 5.5 | python3-cryptography | Not affected |
| Products at an unknown state of their lifecycle. | ||
| Products | saltbundlepy-cryptography | Not affected |
| Products | venv-salt-minion | Not affected |
| SUSE Manager Client Tools for SL Micro 6 | venv-salt-minion | Not affected |
| SUSE Manager Client Tools for Ubuntu 2404 | venv-salt-minion | Not affected |
| SUSE Manager Debian 12-CLIENT-TOOLS | venv-salt-minion | Not affected |
| SUSE Manager Ubuntu 22.04-CLIENT-TOOLS | venv-salt-minion | Not affected |
| SUSE Manager Ubuntu 24.04-CLIENT-TOOLS | venv-salt-minion | Not affected |
| SUSE Multi Linux Manager Tools EL-8 | venv-salt-minion | Not affected |
| SUSE Multi Linux Manager Tools EL-9 | venv-salt-minion | Not affected |
| SUSE Multi Linux Manager Tools RES-7 | venv-salt-minion | Not affected |
| SUSE Multi Linux Manager Tools SLE-12 | venv-salt-minion | Not affected |
| SUSE Multi Linux Manager Tools SLE-15 | venv-salt-minion | Not affected |
| SUSE Multi Linux Manager Tools SLE-Micro-5 | venv-salt-minion | Not affected |
| SUSE Multi Linux Manager Tools Ubuntu-22.04 | venv-salt-minion | Not affected |
| SUSE Multi Linux Manager Tools Ubuntu-24.04 | venv-salt-minion | Not affected |
| SUSE Multi-Linux Manager Client Tools for SUSE Liberty Linux 7, RHEL and clones | venv-salt-minion | Not affected |
| SUSE Multi-Linux Manager Client Tools for SUSE Liberty Linux 8, RHEL and clones | venv-salt-minion | Not affected |
| SUSE Multi-Linux Manager Client Tools for SUSE Liberty Linux 9, RHEL and clones | venv-salt-minion | Not affected |
| Container Status | ||
| bci/kiwi suse/389-ds suse/manager/4.3/proxy-httpd suse/manager/4.3/proxy-tftpd suse/manager/5.0/x86_64/proxy-httpd suse/manager/5.0/x86_64/proxy-tftpd suse/manager/5.0/x86_64/server suse/multi-linux-manager/5.1/x86_64/proxy-httpd suse/multi-linux-manager/5.1/x86_64/proxy-salt-broker suse/multi-linux-manager/5.1/x86_64/proxy-tftpd suse/multi-linux-manager/5.1/x86_64/server suse/multi-linux-manager/5.2/x86_64/proxy-httpd suse/multi-linux-manager/5.2/x86_64/proxy-tftpd suse/multi-linux-manager/5.2/x86_64/server | python3-cryptography | Not affected |
SUSE Timeline for this CVE
CVE page created: Tue Aug 4 12:40:25 2026CVE page last modified: Tue Aug 4 15:34:53 2026