Out-of-bounds Write Affecting unbound-libs package, versions <0:1.7.3-15.el8


Severity

Recommended
medium

Based on CentOS security rating

    Threat Intelligence

    EPSS
    0.31% (71st percentile)

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  • Snyk ID SNYK-CENTOS8-UNBOUNDLIBS-2109788
  • published 26 Jul 2021
  • disclosed 11 Dec 2019

How to fix?

Upgrade Centos:8 unbound-libs to version 0:1.7.3-15.el8 or higher.

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 Centos. See How to fix? for Centos:8 relevant fixed versions and status.

Unbound before 1.9.5 allows an out-of-bounds write via a compressed name in rdata_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
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NVD

9.8 critical
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High
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Red Hat

9.8 critical
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SUSE

6.5 medium