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.
Published: 2019-11-26
Score: 9.1 Critical
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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Tracking

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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
History

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Subscriptions

Canonical Ubuntu Linux
Debian Debian Linux
Fedoraproject Fedora
Opensuse Leap
Redhat Enterprise Linux
Squid-cache Squid
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

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

Reserved: 2019-06-02T00:00:00.000Z

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.

Weaknesses