Permissions, Privileges, and Access Controls in openssh (Alpine package)

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU32557

Risk: Medium

CVSSv4.0: 0.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:U/U:Green]

CVE-ID: CVE-2014-2532

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote authenticated user to read and manipulate data.

sshd in OpenSSH before 6.6 does not properly support wildcards on AcceptEnv lines in sshd_config, which allows remote attackers to bypass intended environment restrictions by using a substring located before a wildcard character.

Mitigation

Install update from vendor's website.

Vulnerable software versions

openssh (Alpine package): 5.9_p1-r2

CPE2.3

• cpe:2.3:a:alpine:openssh_alpine_package:5.9_p1-r2:*:*:*:*:alpine_linux:*:2.4

External links

https://git.alpinelinux.org/aports/commit/?id=504d9cc36b7cce12fe32cd729d4211c5c4fc3303
https://git.alpinelinux.org/aports/commit/?id=d3dab2ed5b4e4f080518f87513c4b0958e203159
https://git.alpinelinux.org/aports/commit/?id=e8f74d41f779d7763f3696d4c921bbc884adca02
https://git.alpinelinux.org/aports/commit/?id=9e8e49a85f569c1985e7e470926f4320f1a84527

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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