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Servers and applications

CVE-2020-14059

SQUID-2020:5 Denial of Service when using SMP cache

Severity
Medium 6.5
Published
19 Jun 2020
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
5.0.3
Also known as
GHSA-w7pw-2m4p-58hr
Sources
NVD, Project advisories (GitHub)

Description

An issue was discovered in Squid 5.x before 5.0.3. Due to an Incorrect Synchronization, a Denial of Service can occur when processing objects in an SMP cache because of an Ipc::Mem::PageStack::pop ABA problem during access to the memory page/slot management list.

Affected software

SoftwareAffected versions
SquidServers and applications · cpe:a:squid-cache:squid
  • From 5.0 before 5.0.3
SquidServers and applications · github:squid-cache/squid
  • From 5.0.1 before 5.0.3

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2020-14059
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2020-14059
  • GitHub Advisory Database https://github.com/advisories/GHSA-w7pw-2m4p-58hr
  • github.com https://github.com/squid-cache/squid/security/advisories/GHSA-w7pw-2m4p-58hr