Resource Exhaustion Affecting dhcp-common package, versions <12:4.2.5-83.el7_9.2


Severity

Recommended
0.0
high
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
5.02% (94th percentile)

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  • Snyk IDSNYK-CENTOS7-DHCPCOMMON-7276615
  • published19 Jun 2024
  • disclosed13 Feb 2024

Introduced: 13 Feb 2024

CVE-2023-50387  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade Centos:7 dhcp-common to version 12:4.2.5-83.el7_9.2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream dhcp-common package and not the dhcp-common package as distributed by Centos. See How to fix? for Centos:7 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