MGASA-2024-0297 - Updated botan2 packages fix security vulnerability

Publication date: 13 Sep 2024
URL: https://advisories.mageia.org/MGASA-2024-0297.html
Type: security
Affected Mageia releases: 9
CVE: CVE-2024-34703

An attacker could present an ECDSA X.509 certificate using explicit
encoding where the parameters are very large.
When parsing, the parameter is checked to be prime, causing excessive
computation. This was patched in 2.19.4 and 3.3.0 to allow the prime
parameter of the elliptic curve to be at most 521 bits. No known
workarounds are available. Note that support for explicit encoding of
elliptic curve parameters is deprecated in Botan.

References:
- https://bugs.mageia.org/show_bug.cgi?id=33429
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QNLPSUOQTRVMV6WYZLISDVNWVFZEBQR5/
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-34703

SRPMS:
- 9/core/botan2-2.19.5-1.mga9

Mageia 2024-0297: botan2 Security Advisory Updates

An attacker could present an ECDSA X.509 certificate using explicit encoding where the parameters are very large

Summary

An attacker could present an ECDSA X.509 certificate using explicit encoding where the parameters are very large. When parsing, the parameter is checked to be prime, causing excessive computation. This was patched in 2.19.4 and 3.3.0 to allow the prime parameter of the elliptic curve to be at most 521 bits. No known workarounds are available. Note that support for explicit encoding of elliptic curve parameters is deprecated in Botan.

References

- https://bugs.mageia.org/show_bug.cgi?id=33429

- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QNLPSUOQTRVMV6WYZLISDVNWVFZEBQR5/

- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-34703

Resolution

MGASA-2024-0297 - Updated botan2 packages fix security vulnerability

SRPMS

- 9/core/botan2-2.19.5-1.mga9

Severity
Publication date: 13 Sep 2024
URL: https://advisories.mageia.org/MGASA-2024-0297.html
Type: security
CVE: CVE-2024-34703

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