SB2013060602 - Remote denial of service in Squid
Published: June 6, 2013 Updated: May 1, 2026
Security Bulletin ID
SB2013060602
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Input validation error (CVE-ID: CVE-2013-4123)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Green
The vulnerability allows a remote client to perform service disruption.
The vulnerability exists due to incorrect handling of HTTP requests in client_side_request.cc. A remote client can supply a crafted port number in a HTTP Host header and crash the server.
Remediation
Install update from vendor's website.