Loop with Unreachable Exit Condition ('Infinite Loop') Affecting unbound-libs package, versions <0:1.7.3-12.el8_2


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.18% (55th percentile)

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  • Snyk IDSNYK-RHEL8-UNBOUNDLIBS-4028223
  • published26 Jul 2021
  • disclosed11 Dec 2019

Introduced: 11 Dec 2019

CVE-2019-25040  (opens in a new tab)
CWE-835  (opens in a new tab)

How to fix?

Upgrade RHEL:8 unbound-libs to version 0:1.7.3-12.el8_2 or higher.
This issue was patched in RHSA-2022:0632.

NVD Description

Note: Versions mentioned in the description apply only to the upstream unbound-libs package and not the unbound-libs package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

Unbound before 1.9.5 allows an infinite loop via a compressed name in dname_pkt_copy. NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound installation cannot be remotely or locally exploited

CVSS Scores

version 3.1