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.
Advisories
Source ID Title
Debian DLA Debian DLA DLA-2278-1 squid3 security update
Debian DLA Debian DLA DLA-2278-2 squid3 regression update
Debian DSA Debian DSA DSA-4682-1 squid security update
EUVD EUVD EUVD-2019-4118 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.
Ubuntu USN Ubuntu USN USN-4213-1 Squid vulnerabilities
Ubuntu USN Ubuntu USN USN-4446-1 Squid vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-04T23:24:39.198Z

Reserved: 2019-06-02T00:00:00

Link: CVE-2019-12523

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2019-11-26T17:15:10.767

Modified: 2024-11-21T04:23:01.897

Link: CVE-2019-12523

cve-icon Redhat

Severity : Moderate

Publid Date: 2019-11-05T00:00:00Z

Links: CVE-2019-12523 - Bugzilla

cve-icon OpenCVE Enrichment

No data.