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CVE-2023-46728

Public on 2023-11-06
Modified on 2024-01-18
Description

Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Due to a NULL pointer dereference bug Squid is vulnerable to a Denial of Service attack against Squid's Gopher gateway. The gopher protocol is always available and enabled in Squid prior to Squid 6.0.1. Responses triggering this bug are possible to be received from any gopher server, even those without malicious intent. Gopher support has been removed in Squid version 6.0.1. Users are advised to upgrade. Users unable to upgrade should reject all gopher URL requests.

Severity
Important
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CVSS v3 Base Score
7.5
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Affected Packages

Platform Package Release Date Advisory
Amazon Linux 1 squid 2023-11-10 17:32 ALAS-2023-1885
Amazon Linux 2 - Core squid 2023-11-29 22:19 ALAS2-2023-2354
Amazon Linux 2023 squid 2023-11-09 21:29 ALAS2023-2023-429

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD CVSSv3 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H