Upstream information
Description
A flaw was found in librest. The PKCE implementation for OAuth authorization uses the GRand function from the GLib API, a cryptographically insecure pseudo-random number generator. Because the generated "code verifier" lacks sufficient cryptographic entropy, a malicious actor can reverse-engineer the pseudo-random number generator (PRNG) seed to predict or reconstruct the code verifier string, allowing an attacker to bypass PKCE protections and successfully impersonate the client during the OAuth 2.0 authorization flow.SUSE information
Overall state of this security issue: Pending
This issue is currently rated as having moderate severity.
| CVSS detail | CNA (Red Hat) | SUSE |
|---|---|---|
| Base Score | 6.8 | 6.8 |
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N |
| Attack Vector | Network | Network |
| Attack Complexity | High | High |
| Privileges Required | None | None |
| User Interaction | Required | Required |
| Scope | Unchanged | Unchanged |
| Confidentiality Impact | High | High |
| Integrity Impact | High | High |
| Availability Impact | None | None |
| 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Please note that this evaluation state might be work in progress, incomplete or outdated.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 | librest | Affected |
| SUSE Linux Enterprise Desktop 15 SP7 | librest0_7 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP7 | librest | Affected |
| SUSE Linux Enterprise Module for Desktop Applications 15 SP7 | librest | Affected |
| SUSE Linux Enterprise Server 15 SP7 | librest | Affected |
| SUSE Linux Enterprise Server 15 SP7 | librest0_7 | Affected |
| SUSE Linux Enterprise Server 16.0 | librest | Affected |
| SUSE Linux Enterprise Server 16.1 | librest | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | librest | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | librest0_7 | Affected |
| SUSE Linux Enterprise Server for SAP applications 16.0 | librest | Affected |
| SUSE Linux Enterprise Server for SAP applications 16.1 | librest | Affected |
| SUSE Linux Enterprise Workstation Extension 15 SP7 | librest0_7 | Affected |
| openSUSE Leap 16.0 | librest | Affected |
| Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
| SUSE Linux Enterprise High Performance Computing 12 SP5 | librest | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4 | librest | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | librest | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5 | librest | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | librest | Affected |
| SUSE Linux Enterprise Module for Desktop Applications 15 SP4 | librest | Affected |
| SUSE Linux Enterprise Module for Desktop Applications 15 SP5 | librest | Affected |
| SUSE Linux Enterprise Module for Desktop Applications 15 SP6 | librest | Affected |
| SUSE Linux Enterprise Server 12 SP5 | librest | Affected |
| SUSE Linux Enterprise Server 12 SP5-LTSS | librest | Affected |
| SUSE Linux Enterprise Server 12 SP5-LTSS Extended Security | librest | Affected |
| SUSE Linux Enterprise Server 15 SP4 | librest | Affected |
| SUSE Linux Enterprise Server 15 SP4-LTSS | librest | Affected |
| SUSE Linux Enterprise Server 15 SP5 | librest | Affected |
| SUSE Linux Enterprise Server 15 SP5-LTSS | librest | Affected |
| SUSE Linux Enterprise Server 15 SP6 | librest | Affected |
| SUSE Linux Enterprise Server 15 SP6 | librest0_7 | Affected |
| SUSE Linux Enterprise Server 15 SP6-LTSS | librest | Affected |
| SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 | librest | Affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP5 | librest | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | librest | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | librest0_7 | Affected |
| SUSE Manager Proxy 4.3 | librest | Affected |
| SUSE Manager Retail Branch Server 4.3 | librest | Affected |
| SUSE Manager Server 4.3 | librest | Affected |
| Products past their end of life and not receiving proactive updates anymore. | ||
| HPE Helion OpenStack 8 | librest | Affected |
| SUSE CaaS Platform 4.0 | librest | Affected |
| SUSE Enterprise Storage 6 | librest | Affected |
| SUSE Enterprise Storage 7 | librest | Affected |
| SUSE Enterprise Storage 7.1 | librest | Affected |
| SUSE Linux Enterprise Desktop 12 SP2 | librest | Affected |
| SUSE Linux Enterprise Desktop 12 SP3 | librest | Affected |
| SUSE Linux Enterprise Desktop 12 SP4 | librest | Affected |
| SUSE Linux Enterprise Desktop 15 | librest | Affected |
| SUSE Linux Enterprise Desktop 15 SP1 | librest | Affected |
| SUSE Linux Enterprise Desktop 15 SP2 | librest | Affected |
| SUSE Linux Enterprise Desktop 15 SP3 | librest | Affected |
| SUSE Linux Enterprise Desktop 15 SP4 | librest | Affected |
| SUSE Linux Enterprise Desktop 15 SP5 | librest | Affected |
| SUSE Linux Enterprise Desktop 15 SP6 | librest | Affected |
| SUSE Linux Enterprise Desktop 15 SP6 | librest0_7 | Affected |
| SUSE Linux Enterprise High Performance Computing 12 SP2 | librest | Affected |
| SUSE Linux Enterprise High Performance Computing 12 SP3 | librest | Affected |
| SUSE Linux Enterprise High Performance Computing 12 SP4 | librest | Affected |
| SUSE Linux Enterprise High Performance Computing 15 | librest | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1 | librest | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS | librest | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS | librest | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2 | librest | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS | librest | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | librest | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3 | librest | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS | librest | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | librest | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | librest | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | librest | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP6 | librest | Affected |
| SUSE Linux Enterprise High Performance Computing 15-ESPOS | librest | Affected |
| SUSE Linux Enterprise High Performance Computing 15-LTSS | librest | Affected |
| SUSE Linux Enterprise Micro 5.2 | librest | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 | librest | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP1 | librest | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP2 | librest | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP3 | librest | Affected |
| SUSE Linux Enterprise Module for Desktop Applications 15 | librest | Affected |
| SUSE Linux Enterprise Module for Desktop Applications 15 SP1 | librest | Affected |
| SUSE Linux Enterprise Module for Desktop Applications 15 SP2 | librest | Affected |
| SUSE Linux Enterprise Module for Desktop Applications 15 SP3 | librest | Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP3 | librest | Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP4 | librest | Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP5 | librest | Affected |
| SUSE Linux Enterprise Point of Sale 12 SP2-CLIENT | librest | Affected |
| SUSE Linux Enterprise Real Time 15 SP2 | librest | Affected |
| SUSE Linux Enterprise Real Time 15 SP3 | librest | Affected |
| SUSE Linux Enterprise Real Time 15 SP4 | librest | Affected |
| SUSE Linux Enterprise Server 12 SP2 | librest | Affected |
| SUSE Linux Enterprise Server 12 SP2-BCL | librest | Affected |
| SUSE Linux Enterprise Server 12 SP2-ESPOS | librest | Affected |
| SUSE Linux Enterprise Server 12 SP2-LTSS | librest | Affected |
| SUSE Linux Enterprise Server 12 SP3 | librest | Affected |
| SUSE Linux Enterprise Server 12 SP3-BCL | librest | Affected |
| SUSE Linux Enterprise Server 12 SP3-ESPOS | librest | Affected |
| SUSE Linux Enterprise Server 12 SP3-LTSS | librest | Affected |
| SUSE Linux Enterprise Server 12 SP4 | librest | Affected |
| SUSE Linux Enterprise Server 12 SP4-ESPOS | librest | Affected |
| SUSE Linux Enterprise Server 12 SP4-LTSS | librest | Affected |
| SUSE Linux Enterprise Server 15 | librest | Affected |
| SUSE Linux Enterprise Server 15 SP1 | librest | Affected |
| SUSE Linux Enterprise Server 15 SP1-BCL | librest | Affected |
| SUSE Linux Enterprise Server 15 SP1-LTSS | librest | Affected |
| SUSE Linux Enterprise Server 15 SP2 | librest | Affected |
| SUSE Linux Enterprise Server 15 SP2-BCL | librest | Affected |
| SUSE Linux Enterprise Server 15 SP2-LTSS | librest | Affected |
| SUSE Linux Enterprise Server 15 SP3 | librest | Affected |
| SUSE Linux Enterprise Server 15 SP3-BCL | librest | Affected |
| SUSE Linux Enterprise Server 15 SP3-LTSS | librest | Affected |
| SUSE Linux Enterprise Server 15-LTSS | librest | Affected |
| SUSE Linux Enterprise Server for Raspberry Pi 12 SP2 | librest | Affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP2 | librest | Affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP3 | librest | Affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP4 | librest | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 | librest | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP1 | librest | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP2 | librest | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP3 | librest | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | librest | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | librest | Affected |
| SUSE Linux Enterprise Software Development Kit 12 SP2 | librest | Affected |
| SUSE Linux Enterprise Software Development Kit 12 SP3 | librest | Affected |
| SUSE Linux Enterprise Software Development Kit 12 SP4 | librest | Affected |
| SUSE Linux Enterprise Software Development Kit 12 SP5 | librest | Affected |
| SUSE Linux Enterprise Workstation Extension 12 SP2 | librest | Affected |
| SUSE Linux Enterprise Workstation Extension 12 SP3 | librest | Affected |
| SUSE Linux Enterprise Workstation Extension 12 SP4 | librest | Affected |
| SUSE Linux Enterprise Workstation Extension 12 SP5 | librest | Affected |
| SUSE Linux Enterprise Workstation Extension 15 SP6 | librest0_7 | Affected |
| SUSE Manager Proxy 4.0 | librest | Affected |
| SUSE Manager Proxy 4.1 | librest | Affected |
| SUSE Manager Proxy 4.2 | librest | Affected |
| SUSE Manager Retail Branch Server 4.0 | librest | Affected |
| SUSE Manager Retail Branch Server 4.1 | librest | Affected |
| SUSE Manager Retail Branch Server 4.2 | librest | Affected |
| SUSE Manager Server 4.0 | librest | Affected |
| SUSE Manager Server 4.1 | librest | Affected |
| SUSE Manager Server 4.2 | librest | Affected |
| SUSE OpenStack Cloud 7 | librest | Affected |
| SUSE OpenStack Cloud 8 | librest | Affected |
| SUSE OpenStack Cloud 9 | librest | Affected |
| SUSE OpenStack Cloud Crowbar 8 | librest | Affected |
| SUSE OpenStack Cloud Crowbar 9 | librest | Affected |
| openSUSE Leap 15.3 | librest | Affected |
| openSUSE Leap 15.4 | librest | Affected |
| openSUSE Leap 15.5 | librest | Affected |
| openSUSE Leap 15.6 | librest | Affected |
| openSUSE Leap 15.6 | librest0_7 | Affected |
| openSUSE Leap Micro 5.2 | librest | Affected |
SUSE Timeline for this CVE
CVE page created: Thu Jul 23 14:44:46 2026CVE page last modified: Fri Jul 24 11:31:20 2026