Input validation error in OpenAFS

1) Input validation error

EUVDB-ID: #VU41821

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2014-2852

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

OpenAFS before 1.6.7 delays the listen thread when an RXS_CheckResponse fails, which allows remote attackers to cause a denial of service (performance degradation) via an invalid packet.

Mitigation

Install update from vendor's website.

Vulnerable software versions

OpenAFS: 1.6.0 - 1.6.5.2

CPE2.3

• cpe:2.3:a:openafs_org:openafs:1.6.0:*:*:*:*:*:*:*
• cpe:2.3:a:openafs_org:openafs:1.6.1:*:*:*:*:*:*:*
• cpe:2.3:a:openafs_org:openafs:1.6.2:*:*:*:*:*:*:*

External links

http://www.debian.org/security/2014/dsa-2899
http://www.openafs.org/frameset/dl/openafs/1.6.7/ChangeLog

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.