Upstream information
Description
Botan is a C++ cryptography library. From 2.1.0 until 3.13.0, the Botan C API function botan_block_cipher_block_size converted a size_t block size to int without a bounds check. In an application that accepts external algorithm parameter strings and uses the FFI raw ECB mode, an attacker can select the variable-block-size Lion cipher so that the reported size is truncated, the caller allocates insufficient memory, and later block processing causes memory corruption. The C++ API and normally used C API modes such as CBC and CTR are unaffected. This issue is fixed in version 3.13.0.SUSE information
Overall state of this security issue: Pending
This issue is currently rated as having important severity.
| CVSS detail | SUSE |
|---|---|
| Base Score | 8.1 |
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Attack Vector | Network |
| Attack Complexity | High |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality Impact | High |
| Integrity Impact | High |
| Availability Impact | High |
| CVSSv3 Version | 3.1 |
| CVSS detail | CNA (GitHub) | SUSE |
|---|---|---|
| Base Score | 9.2 | 9.2 |
| Vector | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/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:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| Attack Vector | Network | Network |
| Attack Complexity | Low | High |
| Attack Requirements | Present | Present |
| Privileges Required | None | None |
| User Interaction | None | None |
| Vulnerable System Confidentiality Impact | High | High |
| Vulnerable System Integrity Impact | High | High |
| Vulnerable System Availability Impact | High | High |
| 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Please note that this evaluation state might be work in progress, incomplete or outdated.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 | MozillaThunderbird | Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP7 | MozillaThunderbird | Affected |
| SUSE Linux Enterprise Server 15 SP7 | MozillaThunderbird | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | MozillaThunderbird | Affected |
| SUSE Linux Enterprise Workstation Extension 15 SP7 | MozillaThunderbird | Affected |
| Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
| SUSE Linux Enterprise Server 12 SP5 | Botan | Not affected |
| SUSE Linux Enterprise Server 12 SP5-LTSS | Botan | Not affected |
| SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 | Botan | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP5 | Botan | Not affected |
| Products past their end of life and not receiving proactive updates anymore. | ||
| SUSE Linux Enterprise Desktop 12 | Botan | Not affected |
| SUSE Linux Enterprise Desktop 12 SP1 | Botan | Not affected |
| SUSE Linux Enterprise Desktop 12 SP2 | Botan | Not affected |
| SUSE Linux Enterprise Desktop 12 SP3 | Botan | Not affected |
| SUSE Linux Enterprise Desktop 12 SP4 | Botan | Not affected |
| SUSE Linux Enterprise Server 12 | Botan | Not affected |
| SUSE Linux Enterprise Server 12 SP1 | Botan | Not affected |
| SUSE Linux Enterprise Server 12 SP2 | Botan | Not affected |
| SUSE Linux Enterprise Server 12 SP3 | Botan | Not affected |
| SUSE Linux Enterprise Server 12 SP4 | Botan | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 12 | Botan | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP1 | Botan | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP2 | Botan | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP3 | Botan | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP4 | Botan | Not affected |
| SUSE Linux Enterprise Software Development Kit 12 | Botan | Not affected |
| SUSE Linux Enterprise Software Development Kit 12 SP1 | Botan | Not affected |
| SUSE Linux Enterprise Software Development Kit 12 SP2 | Botan | Not affected |
| SUSE Linux Enterprise Software Development Kit 12 SP3 | Botan | Not affected |
| SUSE Linux Enterprise Software Development Kit 12 SP4 | Botan | Not affected |
| SUSE Linux Enterprise Software Development Kit 12 SP5 | Botan | Not affected |
SUSE Timeline for this CVE
CVE page created: Fri Oct 30 14:54:49 2026CVE page last modified: Fri Oct 30 15:56:03 2026