Integer Overflow or Wraparound Affecting unbound-libs package, versions <0:1.16.2-2.el8


Severity

Recommended
medium

Based on CentOS security rating

    Threat Intelligence

    EPSS
    0.44% (76th percentile)

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  • Snyk ID SNYK-CENTOS8-UNBOUNDLIBS-1949998
  • published 26 Jul 2021
  • disclosed 11 Dec 2019

How to fix?

Upgrade Centos:8 unbound-libs to version 0:1.16.2-2.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 integer overflow in the regional allocator via the ALIGN_UP macro. 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

5.3 medium