Mageia 9: MGASA-2024-0041 Critical: dnsmasq Resource Exhaustion DoS Risk
mageia
February 18, 2024
This updated dnsmasq package fixes security issues: Certain DNSSEC aspects of the DNS protocol allow a remote attacker to trigger a denial of service via extreme consumption of res...
Summary
This updated dnsmasq package fixes security issues:
Certain DNSSEC aspects of the DNS protocol allow a remote attacker to
trigger a denial of service via extreme consumption of resource caused
by DNSSEC query or response:
- KeyTrap - Extreme CPU consumption in DNSSEC validator.
(CVE-2023-50387)
- Preparing an NSEC3 closest encloser proof can exhaust CPU resources.
(CVE-2023-50868)
This update also fixes issues with udp packet size (fix already present
in mageia package for 2.89), possible segfault and caching.
References
- https://bugs.mageia.org/show_bug.cgi?id=32853
-
- https://www.cve.org/CVERecord?id=CVE-2023-50387
- https://www.cve.org/CVERecord?id=CVE-2023-50868
Resolution
SRPMS
- 9/core/dnsmasq-2.90-1.mga9
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Severity
critical
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Critical
Publication date: 18 Feb 2024
URL: https://advisories.mageia.org/MGASA-2024-0041.html
Type: security
CVE: CVE-2023-50387,
CVE-2023-50868
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