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Ubuntu: (Multiple Advisories) (CVE-2019-12523): Squid regression

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Ubuntu: (Multiple Advisories) (CVE-2019-12523): Squid regression

Severity
6
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:N)
Published
11/14/2019
Created
12/07/2019
Added
12/05/2019
Modified
08/28/2020

Description

An issue was discovered in Squid before 4.9. When handling a URN request, a corresponding HTTP request is made. This HTTP request doesn't go through the access checks that incoming HTTP requests go through. This causes all access checks to be bypassed and allows access to restricted HTTP servers, e.g., an attacker can connect to HTTP servers that only listen on localhost.

Solution(s)

  • ubuntu-upgrade-squid
  • ubuntu-upgrade-squid3

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