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  5. CVE-2020-16845

CVE-2020-16845: Withdrawn Advisory: Infinite loop in xz

December 16, 2021 (updated October 14, 2025)

Withdrawn Advisory

This advisory has been withdrawn because alerts cannot be issued for the Go standard library at this time.

Original Description

Go before 1.13.15 and 14.x before 1.14.7 can have an infinite read loop in ReadUvarint and ReadVarint in encoding/binary via invalid inputs.

References

  • github.com/advisories/GHSA-q6gq-997w-f55g
  • github.com/ulikunitz/xz/commit/69c6093c7b2397b923acf82cb378f55ab2652b9b
  • github.com/ulikunitz/xz/issues/35
  • groups.google.com/forum/
  • groups.google.com/forum/
  • lists.debian.org/debian-lts-announce/2020/11/msg00037.html
  • lists.debian.org/debian-lts-announce/2020/11/msg00038.html
  • lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6RCFJTMKHY5ICGEM5BUFUEDDGSPJ25XU
  • lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KWRBAH4UZJO3RROQ72SYCUPFCJFA22FO
  • lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TACQFZDPA7AUR6TRZBCX2RGRFSDYLI7O
  • lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WV2VWKFTH4EJGZBZALVUJQJOAQB5MDQ4
  • nvd.nist.gov/vuln/detail/CVE-2020-16845
  • security.netapp.com/advisory/ntap-20200924-0002
  • www.debian.org/security/2021/dsa-4848
  • www.oracle.com/security-alerts/cpuApr2021.html

Code Behaviors & Features

Detect and mitigate CVE-2020-16845 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Learn more about Dependency Scanning →

Affected versions

All versions before 0.5.8

Fixed versions

  • 0.5.8

Solution

Upgrade to version 0.5.8 or above.

Impact 7.5 HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Learn more about CVSS

Weakness

  • CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')

Source file

go/github.com/ulikunitz/xz/CVE-2020-16845.yml

Spotted a mistake? Edit the file on GitLab.

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