#VU12268 Infinite loop in Glibc - CVE-2014-9402

Vulnerability identifier: #VU12268

Vulnerability risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2014-9402

CWE-ID: CWE-835

Exploitation vector: Network

Exploit availability: No

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

Vendor: GNU

Description
The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists in the nss_dns implementation of getnetbyname due to infinite loop when the DNS backend in the Name Service Switch configuration is enabled. A remote attacker can send a positive answer while a network name is being process and cause the service to crash.

Mitigation
Update to version 2.21.

Vulnerable software versions

Glibc: 2.0 - 2.20

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External links
https://sourceware.org/bugzilla/show_bug.cgi?id=17630

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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.