DEBIAN-CVE-2019-12523

See a problem?
Please try reporting it to the source first.
Source
https://security-tracker.debian.org/tracker/CVE-2019-12523
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2019-12523.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2019-12523
Upstream
Published
2019-11-26T17:15:10Z
Modified
2025-09-30T03:54:40Z
Severity
  • 9.1 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
Summary
[none]
Details

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

Affected packages

Debian:11 / squid

Package

Name
squid
Purl
pkg:deb/debian/squid?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.9-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / squid

Package

Name
squid
Purl
pkg:deb/debian/squid?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.9-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / squid

Package

Name
squid
Purl
pkg:deb/debian/squid?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.9-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14 / squid

Package

Name
squid
Purl
pkg:deb/debian/squid?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.9-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}