Stack-based buffer overflow in musl libc - CVE-2014-3484
Published: April 27, 2020
Vulnerability identifier: #VU27336
CSH Severity: Medium
CVSS v4: 7.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2014-3484
CWE-ID: CWE-121
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when processing an invalid name length in a DNS response in __dn_expand function in network/dn_expand.c in musl libc. A remote attacker can perform a denial of service attack or execute arbitrary code on the target system.
Affected software
musl libc
Ubuntu
musl (Ubuntu package)
Ubuntu
musl (Ubuntu package)
How to mitigate CVE-2014-3484
Install update from vendor's website.
musl libc - update to 1.1.2
musl (Ubuntu package) - addressed in versions 0.9.15-1ubuntu0.1~esm1, 1.1.9-1ubuntu0.1~esm2
musl (Ubuntu package) - addressed in versions 0.9.15-1ubuntu0.1~esm1, 1.1.9-1ubuntu0.1~esm2