Link following in Novell Opensuse

1) Link following

EUVDB-ID: #VU45148

Risk: High

CVSSv4.0: 4.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2011-0461

CWE-ID: CWE-59 - Improper Link Resolution Before File Access ('Link Following')

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to #BASIC_IMPACT#.

/etc/init.d/boot.localfs in the aaa_base package before 11.2-43.48.1 in SUSE openSUSE 11.2, and before 11.3-8.7.1 in openSUSE 11.3, allows local users to overwrite arbitrary files via a symlink attack on /dev/shm/mtab.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Opensuse: 11.2 - 11.3

CPE2.3

• cpe:2.3:o:suse:opensuse:11.2:*:*:*:*:*:*:*
• cpe:2.3:o:suse:opensuse:11.3:*:*:*:*:*:*:*

External links

https://lists.opensuse.org/opensuse-security-announce/2011-04/msg00000.html
https://lists.opensuse.org/opensuse-security-announce/2011-05/msg00005.html
https://lists.opensuse.org/opensuse-updates/2011-03/msg00007.html
https://support.novell.com/security/cve/CVE-2011-0461.html
https://bugzilla.novell.com/665479

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.