Information disclosure in OpenAFS

1) Information disclosure

EUVDB-ID: #VU40608

Risk: Medium

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

CVE-ID: CVE-2015-7762

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

rx/rx.c in OpenAFS before 1.6.15 and 1.7.x before 1.7.33 does not properly initialize the padding of a data structure when constructing an Rx acknowledgement (ACK) packet, which allows remote attackers to obtain sensitive information by (1) conducting a replay attack or (2) sniffing the network.

Mitigation

Install update from vendor's website.

Vulnerable software versions

OpenAFS: 1.7.1 - 1.7.31

Debian Linux: 1.7.1 - 8.0

CPE2.3

• cpe:2.3:a:openafs_org:openafs:1.7.1:*:*:*:*:*:*:*
• cpe:2.3:a:openafs_org:openafs:1.7.2:*:*:*:*:*:*:*
• cpe:2.3:a:openafs_org:openafs:1.7.3:*:*:*:*:*:*:*
• cpe:2.3:o:debian:debian_linux:1.7.1:*:*:*:*:*:*:*
• cpe:2.3:o:debian:debian_linux:1.7.2:*:*:*:*:*:*:*
• cpe:2.3:o:debian:debian_linux:1.7.3:*:*:*:*:*:*:*

External links

https://www.debian.org/security/2015/dsa-3387
https://www.securitytracker.com/id/1034039
https://lists.openafs.org/pipermail/openafs-announce/2015/000493.html
https://www.openafs.org/dl/openafs/1.6.15/RELNOTES-1.6.15
https://www.openafs.org/pages/security/OPENAFS-SA-2015-007.txt

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.