Heap-based buffer overflow in Mozilla NSS - CVE-2017-11695
Published: August 15, 2017 / Updated: August 20, 2020
Vulnerability identifier: #VU7878
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2017-11695
CWE-ID: CWE-122
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local attacker to gain elevated privileges.
The weakness exists due to heap-based buffer overflow in alloc_segs() in 'lib/dbm/src/hash.c'. A local attacker supply a specially crafted 'cert8.db' file, cause is to be processed by the NSS 'certutil' application and execute arbitrary code with elevated privileges.
Successful exploitation of the vulnerability may result in system compromise.
The weakness exists due to heap-based buffer overflow in alloc_segs() in 'lib/dbm/src/hash.c'. A local attacker supply a specially crafted 'cert8.db' file, cause is to be processed by the NSS 'certutil' application and execute arbitrary code with elevated privileges.
Successful exploitation of the vulnerability may result in system compromise.
Affected software
Mozilla NSS
Gentoo Linux
Gentoo Linux
How to mitigate CVE-2017-11695
Install update from vendor's website.