CVE-2024-39312

Publication date 8 July 2024

Last updated 23 June 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

5.3 · Medium

Score breakdown

Botan is a C++ cryptography library. X.509 certificates can identify elliptic curves using either an object identifier or using explicit encoding of the parameters. A bug in the parsing of name constraint extensions in X.509 certificates meant that if the extension included both permitted subtrees and excluded subtrees, only the permitted subtree would be checked. If a certificate included a name which was permitted by the permitted subtree but also excluded by excluded subtree, it would be accepted. Fixed in versions 3.5.0 and 2.19.5.

Status

Package Ubuntu Release Status
botan 25.04 plucky
Not affected
24.10 oracular
Fixed 2.19.3+dfsg-1ubuntu2.1
24.04 LTS noble
Fixed 2.19.3+dfsg-1ubuntu2+esm1
23.10 mantic Ignored end of life, was needs-triage
22.04 LTS jammy
Fixed 2.19.1+dfsg-2ubuntu1+esm1
20.04 LTS focal
Vulnerable
18.04 LTS bionic Ignored changes too intrusive

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Severity score breakdown

Parameter Value
Base score 5.3 · Medium
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact Low
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

References

Related Ubuntu Security Notices (USN)

Other references