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Mageia 9 Advisory MGASA-2025-0043: Critical DoS Risk in libtasn1

mageia
Calendar Grey February 8, 2025
Dist Mageia Esm H88
Mageia 2025-0044 advisory releases updates for libgcrypt addressing possible DoS vulnerability stemming from suboptimal data processing.
When an input DER data contains a large number of SEQUENCE OF or SET OF elements, decoding the data and searching a specific element in it take quadratic time to complete

Summary

When an input DER data contains a large number of SEQUENCE OF or SET OF elements, decoding the data and searching a specific element in it take quadratic time to complete. This could be utilized for a remote DoS attack by presenting a crafted certificate to the network peer.

References

- https://bugs.mageia.org/show_bug.cgi?id=33993

- https://www.openwall.com/lists/oss-security/2025/02/06/6

- https://www.cve.org/CVERecord?id=CVE-2024-12133

Topics%20covered

Topics Covered

security advisory security issue remote access DoS attack packet processing libtasn1 Mageia

Resolution

SRPMS

- 9/core/libtasn1-4.20.0-1.mga9

Severity
critical
Lowest
Low
Medium
High
Critical

Publication date: 08 Feb 2025
URL: https://advisories.mageia.org/MGASA-2025-0043.html
Type: security
CVE: CVE-2024-12133

Topics%20covered

Topics Covered

security advisory security issue remote access DoS attack packet processing libtasn1 Mageia

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