SB2017070677 - NULL pointer dereference in apache2 (Alpine package)
Published: July 6, 2017
Security Bulletin ID
SB2017070677
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) NULL pointer dereference (CVE-ID: CVE-2017-3169)
CWE-ID: CWE-592 - Authentication Bypass Issues
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Green
The vulnerability allows a remote attacker to perform denial of service attack.
The vulnerability exists due to a NULL pointer dereference error within mod_ssl module, when third-party modules call ap_hook_process_connection() function during an HTTP request to an HTTPS port. A remote attacker can send a specially crafted HTTP request and crash the affected web server.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=33c9b879e1ac2712ea308a9c9e642d83b54d690d
- https://git.alpinelinux.org/aports/commit/?id=123bd575ef649725247a39822c96929fc1d5e06b
- https://git.alpinelinux.org/aports/commit/?id=a565b281e6104e1e1f7ec2b18e1e43353c71a483
- https://git.alpinelinux.org/aports/commit/?id=c930c29f44d1c8c27a01acc3e871b48922d3b620
- https://git.alpinelinux.org/aports/commit/?id=f0f780e35d42ebf1bbacad2015da18bf1c42dc74