SB2016031004 - Security restrictions bypass in Linux Kernel
Published: March 10, 2016
Security Bulletin ID
SB2016031004
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Resource exhaustion (CVE-ID: CVE-2016-3672)
CWE-ID: CWE-400 - Resource exhaustion
CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a local attacker to bypass security restrictions on the target system.
The weakness exists in the arch_pick_mmap_layout function in arch/x86/mm/mmap.c due to improper randomizing of the legacy base address. A local attacker can disable stack-consumption resource limits, defeat the intended restrictions on the ADDR_NO_RANDOMIZE flag and bypass the ASLR protection mechanism for a setuid or setgid program.
Remediation
Install update from vendor's website.