Allocation of Resources Without Limits or Throttling Affecting dnsmasq package, versions <2.90-150400.16.3.1


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
6.44% (94th percentile)

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  • Snyk IDSNYK-SLES156-DNSMASQ-8620102
  • published13 Jan 2025
  • disclosed10 Jan 2025

Introduced: 10 Jan 2025

NewCVE-2023-50387  (opens in a new tab)
CWE-770  (opens in a new tab)

How to fix?

Upgrade SLES:15.6 dnsmasq to version 2.90-150400.16.3.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream dnsmasq package and not the dnsmasq package as distributed by SLES. See How to fix? for SLES:15.6 relevant fixed versions and status.

Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related RFCs) allow remote attackers to cause a denial of service (CPU consumption) via one or more DNSSEC responses, aka the "KeyTrap" issue. One of the concerns is that, when there is a zone with many DNSKEY and RRSIG records, the protocol specification implies that an algorithm must evaluate all combinations of DNSKEY and RRSIG records.

References

CVSS Scores

version 3.1