CVE-2019-12523

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.

References

https://bugzilla.suse.com/show_bug.cgi?id=1156329

http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.html

http://www.squid-cache.org/Advisories/SQUID-2019_8.txt

https://usn.ubuntu.com/4213-1/

https://lists.fedoraproject.org/archives/list/[email protected]/message/UEMOYTMCCFWK5NOXSXEIH5D2VGWVXR67/

https://lists.fedoraproject.org/archives/list/[email protected]/message/MTM74TU2BSLT5B3H4F3UDW53672NVLMC/

https://www.debian.org/security/2020/dsa-4682

https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html

https://usn.ubuntu.com/4446-1/

Details

Risk Information

CVSS v2

CVSS v3