Upstream information
Description
pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.5, constructed string and indefinite-length ANY decoding repeatedly concatenates each fragment onto a growing bytes value. Attacker-controlled BER or CER data can use many constructed OCTET STRING or character-string fragments. DER rejects constructed OCTET STRING without a schema, but accepts its definite-length form when asn1Spec selects univ.OctetString; it also accepts constructed character strings such as UTF8String without a schema, even though those encodings are not valid DER. The separate indefinite-length ANY path is reachable in BER and CER when asn1Spec selects univ.Any; DER rejects indefinite lengths. OctetStringPayloadDecoder uses growing header concatenation and AnyPayloadDecoder.indefLenValueDecoder uses growing chunk concatenation, repeatedly copying an increasing prefix and causing quadratic work. A sufficiently fragmented value can occupy decoding workers and cause CPU exhaustion without confidentiality or integrity impact. This issue is fixed in version 0.6.5.SUSE information
Overall state of this security issue: Pending
This issue is currently rated as having important severity.
| CVSS detail | CNA (GitHub) | SUSE |
|---|---|---|
| Base Score | 7.5 | 7.5 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| Attack Vector | Network | Network |
| Attack Complexity | Low | Low |
| Privileges Required | None | None |
| User Interaction | None | None |
| Scope | Unchanged | Unchanged |
| Confidentiality Impact | None | None |
| Integrity Impact | None | None |
| Availability Impact | High | High |
| CVSSv3 Version | 3.1 | 3.1 |
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Please note that this evaluation state might be work in progress, incomplete or outdated.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-pyasn1 | Affected |
| SUSE Linux Enterprise Micro 5.3 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Micro 5.4 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Micro 5.5 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP7 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Module for Python 3 15 SP7 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Server 15 SP7 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Server 16.0 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Server for SAP applications 16.0 | python-pyasn1 | Affected |
| SUSE Linux Micro 6.0 | python-pyasn1 | Affected |
| SUSE Linux Micro 6.1 | python-pyasn1 | Affected |
| SUSE Linux Micro 6.2 | python-pyasn1 | 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-pyasn1 | Affected |
| Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
| SUSE Linux Enterprise High Performance Computing 12 SP5 | python-pyasn1 | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | python-pyasn1 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | python-pyasn1 | Affected |
| SUSE Linux Enterprise Module for Public Cloud 15 SP4 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Server 12 SP5 | python-pyasn1 | Not affected |
| SUSE Linux Enterprise Server 12 SP5-LTSS | python-pyasn1 | Not affected |
| SUSE Linux Enterprise Server 15 SP4-LTSS | python-pyasn1 | Affected |
| SUSE Linux Enterprise Server 15 SP5-LTSS | python-pyasn1 | Affected |
| SUSE Linux Enterprise Server 15 SP6-LTSS | python-pyasn1 | Affected |
| SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 | python-pyasn1 | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | python-pyasn1 | Affected |
| Products past their end of life and not receiving proactive updates anymore. | ||
| HPE Helion OpenStack 8 | python-pyasn1 | Not affected |
| SUSE CaaS Platform 3.0 | python-pyasn1 | Not affected |
| SUSE CaaS Platform 4.0 | python-pyasn1 | Affected |
| SUSE Enterprise Storage 6 | python-pyasn1 | Affected |
| SUSE Enterprise Storage 7 | python-pyasn1 | Affected |
| SUSE Enterprise Storage 7.1 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Desktop 12 SP1 | python-pyasn1 | Not affected |
| SUSE Linux Enterprise Desktop 12 SP2 | python-pyasn1 | Not affected |
| SUSE Linux Enterprise Desktop 12 SP3 | python-pyasn1 | Not affected |
| SUSE Linux Enterprise Desktop 12 SP4 | python-pyasn1 | Not affected |
| SUSE Linux Enterprise Desktop 15 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Desktop 15 SP1 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Desktop 15 SP2 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Desktop 15 SP3 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Desktop 15 SP4 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Desktop 15 SP5 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Desktop 15 SP6 | python-pyasn1 | Affected |
| SUSE Linux Enterprise High Performance Computing 12 SP1 | python-pyasn1 | Not affected |
| SUSE Linux Enterprise High Performance Computing 12 SP2 | python-pyasn1 | Not affected |
| SUSE Linux Enterprise High Performance Computing 12 SP3 | python-pyasn1 | Not affected |
| SUSE Linux Enterprise High Performance Computing 12 SP4 | python-pyasn1 | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 | python-pyasn1 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1 | python-pyasn1 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS | python-pyasn1 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS | python-pyasn1 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2 | python-pyasn1 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS | python-pyasn1 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | python-pyasn1 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3 | python-pyasn1 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS | python-pyasn1 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | python-pyasn1 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4 | python-pyasn1 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | python-pyasn1 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5 | python-pyasn1 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | python-pyasn1 | Affected |
| SUSE Linux Enterprise High Performance Computing 15-ESPOS | python-pyasn1 | Affected |
| SUSE Linux Enterprise High Performance Computing 15-LTSS | python-pyasn1 | Affected |
| SUSE Linux Enterprise Micro 5.0 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Micro 5.1 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Micro 5.2 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP1 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP2 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP3 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP4 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP5 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP6 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Module for Python 2 15 SP1 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Module for Python 2 15 SP2 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Module for Python 2 15 SP3 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Module for Python 3 15 SP4 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Module for Python 3 15 SP5 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Module for Python 3 15 SP6 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Point of Sale 12 SP2-CLIENT | python-pyasn1 | Not affected |
| SUSE Linux Enterprise Real Time 15 SP2 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Real Time 15 SP3 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Real Time 15 SP4 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Server 12 SP1 | python-pyasn1 | Not affected |
| SUSE Linux Enterprise Server 12 SP1-LTSS | python-pyasn1 | Not affected |
| SUSE Linux Enterprise Server 12 SP2 | python-pyasn1 | Not affected |
| SUSE Linux Enterprise Server 12 SP2-BCL | python-pyasn1 | Not affected |
| SUSE Linux Enterprise Server 12 SP2-ESPOS | python-pyasn1 | Not affected |
| SUSE Linux Enterprise Server 12 SP2-LTSS | python-pyasn1 | Not affected |
| SUSE Linux Enterprise Server 12 SP3 | python-pyasn1 | Not affected |
| SUSE Linux Enterprise Server 12 SP3-BCL | python-pyasn1 | Not affected |
| SUSE Linux Enterprise Server 12 SP3-ESPOS | python-pyasn1 | Not affected |
| SUSE Linux Enterprise Server 12 SP3-LTSS | python-pyasn1 | Not affected |
| SUSE Linux Enterprise Server 12 SP4 | python-pyasn1 | Not affected |
| SUSE Linux Enterprise Server 12 SP4-ESPOS | python-pyasn1 | Not affected |
| SUSE Linux Enterprise Server 12 SP4-LTSS | python-pyasn1 | Not affected |
| SUSE Linux Enterprise Server 15 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Server 15 SP1 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Server 15 SP1-BCL | python-pyasn1 | Affected |
| SUSE Linux Enterprise Server 15 SP1-LTSS | python-pyasn1 | Affected |
| SUSE Linux Enterprise Server 15 SP2 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Server 15 SP2-BCL | python-pyasn1 | Affected |
| SUSE Linux Enterprise Server 15 SP2-LTSS | python-pyasn1 | Affected |
| SUSE Linux Enterprise Server 15 SP3 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Server 15 SP3-BCL | python-pyasn1 | Affected |
| SUSE Linux Enterprise Server 15 SP3-LTSS | python-pyasn1 | Affected |
| SUSE Linux Enterprise Server 15 SP4 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Server 15 SP5 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Server 15 SP6 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Server 15-LTSS | python-pyasn1 | Affected |
| SUSE Linux Enterprise Server for Raspberry Pi 12 SP2 | python-pyasn1 | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP1 | python-pyasn1 | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP2 | python-pyasn1 | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP3 | python-pyasn1 | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP4 | python-pyasn1 | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP1 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP2 | python-pyasn1 | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP3 | python-pyasn1 | Affected |
| SUSE Manager Proxy 4.0 | python-pyasn1 | Affected |
| SUSE Manager Proxy 4.1 | python-pyasn1 | Affected |
| SUSE Manager Proxy 4.2 | python-pyasn1 | Affected |
| SUSE Manager Proxy 4.3 | python-pyasn1 | Affected |
| SUSE Manager Proxy LTS 4.3 | python-pyasn1 | Affected |
| SUSE Manager Retail Branch Server 4.0 | python-pyasn1 | Affected |
| SUSE Manager Retail Branch Server 4.1 | python-pyasn1 | Affected |
| SUSE Manager Retail Branch Server 4.2 | python-pyasn1 | Affected |
| SUSE Manager Retail Branch Server 4.3 | python-pyasn1 | Affected |
| SUSE Manager Retail Branch Server LTS 4.3 | python-pyasn1 | Affected |
| SUSE Manager Server 4.0 | python-pyasn1 | Affected |
| SUSE Manager Server 4.1 | python-pyasn1 | Affected |
| SUSE Manager Server 4.2 | python-pyasn1 | Affected |
| SUSE Manager Server 4.3 | python-pyasn1 | Affected |
| SUSE Manager Server LTS 4.3 | python-pyasn1 | Affected |
| SUSE OpenStack Cloud 7 | python-pyasn1 | Not affected |
| SUSE OpenStack Cloud 8 | python-pyasn1 | Not affected |
| SUSE OpenStack Cloud 9 | python-pyasn1 | Not affected |
| SUSE OpenStack Cloud Crowbar 8 | python-pyasn1 | Not affected |
| SUSE OpenStack Cloud Crowbar 9 | python-pyasn1 | Not affected |
| openSUSE Leap 15.3 | python-pyasn1 | Affected |
| openSUSE Leap 15.4 | python-pyasn1 | Affected |
| openSUSE Leap 15.5 | python-pyasn1 | Affected |
| openSUSE Leap 15.6 | python-pyasn1 | Affected |
| openSUSE Leap Micro 5.2 | python-pyasn1 | Affected |
| openSUSE Leap Micro 5.3 | python-pyasn1 | Affected |
| openSUSE Leap Micro 5.4 | python-pyasn1 | Affected |
| openSUSE Leap Micro 5.5 | python-pyasn1 | Affected |
| Products at an unknown state of their lifecycle. | ||
| Products | saltbundlepy-pyasn1 | Not affected |
| Products | 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 |
SUSE Timeline for this CVE
CVE page created: Fri Oct 30 13:00:15 2026CVE page last modified: Fri Oct 30 15:56:05 2026