CVE-2014-3484 Memory corruption in musl libc
Remote attackers can cause denial of service or potentially execute code via stack-based buffer overflows in the DNS expansion function of musl libc.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2014-3484?
CVE-2014-3484 is a critical memory corruption vulnerability in musl libc, published on 20 Feb 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Multiple stack-based buffer overflows in the __dn_expand function in network/dn_expand.c in musl libc 1.1x before 1.1.2 and 0.9.13 through 1.0.3 allow remote attackers to (1) have unspecified impact via an invalid name length in a DNS response or (2) cause a denial of service (crash) via an invalid name length in a DNS response, related to an infinite loop with no output.
Weakness: CWE-787
Which versions are affected by CVE-2014-3484?
It affects 1 product.
Products include Musl-Libc Musl.
How do I fix CVE-2014-3484?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2014-3484 being exploited?
There is no known exploitation of CVE-2014-3484 in the wild and no public exploit code.
Other vulnerabilities in musl libc
Sources
Also known as DEBIAN-CVE-2014-3484, GHSA-j83j-g9hw-7wvp, MGASA-2014-0262, UBUNTU-CVE-2014-3484.