CVE-2023-46728

CVSS 3.1 Score 7.5 of 10 (high)

Details

Published Nov 6, 2023
Updated: Dec 29, 2023
CWE ID 476

Summary

CVE-2023-46728 is a Denial of Service vulnerability affecting Squid, a widely used caching proxy for the Web. The issue lies in a NULL pointer dereference bug within Squid's Gopher gateway, making it susceptible to attacks. The gopher protocol, which is always enabled in Squid prior to version 6.0.1, can receive malicious responses from any gopher server. These responses can trigger the bug, causing a Denial of Service condition. To mitigate this risk, users are strongly advised to upgrade to Squid version 6.0.1, which has removed gopher support. Alternatively, users unable to upgrade should reject all gopher URL requests.

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Affected Products

  • Squid Software
  • Squid-cache Squid

Affected Vendors

  • Squid Software Foundation

Advisories, Assessments, and Mitigations

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