Denial of Service Vulnerability in Squid Proxy Server by Squid Software
CVE-2021-31808

6.5MEDIUM

Key Information:

Vendor

Squid-cache

Status
Squid
Vendor
CVE Published:
27 May 2021

What is CVE-2021-31808?

A significant vulnerability exists in Squid Proxy Server versions prior to 4.15 and 5.x prior to 5.0.6 due to an input-validation flaw that permits a Denial of Service (DoS) attack. This issue arises when a client sends a specially crafted HTTP Range request, potentially disrupting service for clients using the proxy. Administrators are advised to update their Squid installations to mitigate the risks associated with this vulnerability.

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References

https://github.com/squid-cache/squid/security/advisories/...
x_refsource_MISC
http://www.squid-cache.org/Versions/v4/changesets/squid-4...
x_refsource_MISC
https://www.debian.org/security/2021/dsa-4924
vendor-advisoryx_refsource_DEBIAN

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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