vulnerability
Ubuntu: (Multiple Advisories) (CVE-2019-12523): Squid vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 6 | (AV:N/AC:L/Au:N/C:P/I:P/A:N) | Nov 14, 2019 | Dec 5, 2019 | Mar 27, 2026 |
Severity
6
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:N)
Published
Nov 14, 2019
Added
Dec 5, 2019
Modified
Mar 27, 2026
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
ubuntu-upgrade-squid
Rapid7 Labs
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