Cyber Resilience

CVE-2021-31807

Medium

Published: 08 June 2021

Published
08 June 2021
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.3371 97.1th percentile
Risk Priority 33 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-31807 is a medium-severity Integer Overflow or Wraparound (CWE-190) vulnerability in Squid-Cache Squid. Its CVSS base score is 6.5 (Medium).

Operationally, ranked in the top 2.9% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

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…

more

be expected to exist in HTTP traffic without any malicious intent.

CWE(s)
CWE-190

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

squid-cache
squid
2.5.stable10, 2.5.stable11, 2.5.stable12, 2.5.stable13, 2.5.stable14 · 3.0 — 4.15 · 5.0 — 5.0.6
fedoraproject
fedora
33, 34
netapp
cloud manager
all versions

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References