UpHeron
All vulnerabilities

Servers and applications

CVE-2021-31807

An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. An integer overflow problem allows a remote server to achieve Denial of Service when delivering responses to HTTP Range requests. The issue trigger is a header that can be expected to exist in HTTP traffic without any malicious intent.

Severity
Medium 6.5
Published
8 Jun 2021
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
4.15, 5.0.6
Sources
NVD

Affected software

SoftwareAffected versions
SquidServers and applications · cpe:a:squid-cache:squid
  • From 5.0 before 5.0.6
  • From 3.0 before 4.15
  • Version 2.7-stable9
  • Version 2.7-stable8
All 25 release lines
  • Version 2.5.stable2
  • Version 2.5.stable3
  • Version 2.5.stable4
  • Version 2.5.stable5
  • Version 2.5.stable6
  • Version 2.5.stable7
  • Version 2.5.stable8
  • Version 2.5.stable9
  • Version 2.5.stable10
  • Version 2.5.stable11
  • Version 2.5.stable12
  • Version 2.5.stable13
  • Version 2.5.stable14
  • Version 2.6
  • Version 2.7
  • Version 2.7-stable2
  • Version 2.7-stable3
  • Version 2.7-stable4
  • Version 2.7-stable5
  • Version 2.7-stable6
  • Version 2.7-stable7
  • Version 2.7-stable8
  • Version 2.7-stable9
  • From 3.0 before 4.15
  • From 5.0 before 5.0.6

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-31807
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-31807