#VU110117 Input validation error in Glibc - CVE-2013-4458

Vulnerability identifier: #VU110117

Vulnerability risk: Medium

CVSSv4.0: N/A

CVE-ID: CVE-2013-4458

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Glibc
Universal components / Libraries / Libraries used by multiple products

Vendor: GNU

Description

The vulnerability allows remote attackers to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can cause a denial of service (crash) via a (1) hostname or (2) IP address that triggers a large number of AF_INET6 address results.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Glibc: 0.1 - 2.18

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External links
https://sourceware.org/bugzilla/show_bug.cgi?id=16072
https://www.mandriva.com/security/advisories?name=MDVSA-2013:283
https://sourceware.org/ml/libc-alpha/2013-10/msg00733.html
https://www.mandriva.com/security/advisories?name=MDVSA-2013:284
https://lists.opensuse.org/opensuse-security-announce/2016-02/msg00036.html
https://security.gentoo.org/glsa/201503-04

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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.