Buffer overflow in musl libc library

Published: 2014-06-07 | Updated: 2020-04-27
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2014-3484
Exploitation vector Network
Public exploit N/A
Vulnerable software
musl libc
Universal components / Libraries / Libraries used by multiple products

Vendor GNU

Security Advisory

This security advisory describes one medium risk vulnerability.

1) Stack-based buffer overflow

Risk: Medium

CVSSv3: 6.5 [CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2014-3484

CWE-ID: CWE-121 - Stack-based Buffer Overflow

Exploit availability: No


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.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


Install update from vendor's website.

Vulnerable software versions

musl libc: 0.9.13, 0.9.14, 0.9.15, 1.0.0, 1.0.1, 1.0.2, 1.0.3, 1.1.0, 1.1.1

CPE External links


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.