SB2011101501 - Slackware Linux update for httpd
Published: October 15, 2011 Updated: May 6, 2017
Security Bulletin ID
SB2011101501
Severity
High
Patch available
YES
Number of vulnerabilities
2
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 secuirty vulnerabilities.
1) Resource exhaustion (CVE-ID: CVE-2011-3192)
The vulnerability allows a remote attacker to cause DoS conditions on the target system.The weakness exists due to an error in the ByteRange filter when processing malicious requests in Apache HTTP server. A remote attacker can send a specially crafted HTTP request containing an overly large Range header, exhaust all available memory resources and trigger the application to crash.
Successful exploitation of the vulnerability results in denial service on the vulnerable system.
Note: the vulnerability was being actively exploited.
2) Resource management error (CVE-ID: CVE-2011-3348)
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
The mod_proxy_ajp module in the Apache HTTP Server before 2.2.21, when used with mod_proxy_balancer in certain configurations, allows remote attackers to cause a denial of service (temporary "error state" in the backend server) via a malformed HTTP request.
Remediation
Install update from vendor's website.