SB2012103109 - Input validation error in dhcp (Alpine package)
Published: October 31, 2012
Security Bulletin ID
SB2012103109
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 security vulnerability.
1) Input validation error (CVE-ID: CVE-2012-3955)
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
ISC DHCP 4.1.x before 4.1-ESV-R7 and 4.2.x before 4.2.4-P2 allows remote attackers to cause a denial of service (daemon crash) in opportunistic circumstances by establishing an IPv6 lease in an environment where the lease expiration time is later reduced.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=4b933e8d614263914d7f0e433784bde15aaf250c
- https://git.alpinelinux.org/aports/commit/?id=4be6396274c20b99643b279900876f51aa1c6da5
- https://git.alpinelinux.org/aports/commit/?id=0f30b46b4e0fe507508d7bcd9fd32a25c2bec2a9
- https://git.alpinelinux.org/aports/commit/?id=bec5f6f816d4046c9a47dad89f460b198e511f8f