Resource Exhaustion Affecting bind-sdb-chroot package, versions <32:9.11.4-26.P2.el7_9.16


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
6.75% (94th percentile)

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  • Snyk IDSNYK-RHEL7-BINDSDBCHROOT-6246411
  • published14 Feb 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 RHEL:7 bind-sdb-chroot to version 32:9.11.4-26.P2.el7_9.16 or higher.
This issue was patched in RHSA-2024:3741.

NVD Description

Note: Versions mentioned in the description apply only to the upstream bind-sdb-chroot package and not the bind-sdb-chroot package as distributed by RHEL. See How to fix? for RHEL: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