PT-2012-4713 · Todd Miller+1 · Sudo+1

Tomas Hoger · Published 2012-08-07 · Updated 2023-02-13 · CVE-2012-3440

Positive Technologies (AI Summary)

CVSS v2.0

5.6

Medium

Base vector

AV:L/AC:H/Au:N/C:N/I:C/A:C

Name of the Vulnerable Software and Affected Versions Red Hat Enterprise Linux (RHEL) 5 with sudo version 1.7.2

Description The issue allows local users to overwrite arbitrary files via a symlink attack on the /var/tmp/nsswitch.conf.bak temporary file. This is related to a certain Red Hat script for sudo.

Recommendations For Red Hat Enterprise Linux (RHEL) 5 with sudo version 1.7.2, consider restricting access to the temporary file /var/tmp/nsswitch.conf.bak to prevent symlink attacks until a patch is available. As a temporary workaround, avoid using the Red Hat script for sudo that utilizes this temporary file.

Exploit

Fix

Link Following

Weakness Enumeration

CWE-59

Related Identifiers

CVE-2012-3440

RHSA-2012:1149

RHSA-2012_1149

Affected Products

Red Hat

Sudo

References · 6

• 🔥 https://bugzilla.redhat.com/show_bug.cgi?id=844442 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2012-3440 · Security Note
• https://access.redhat.com/errata/RHSA-2012:1149 · Note
• https://access.redhat.com/security/cve/CVE-2012-3440 · Note
• http://oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html · Note
• http://securityfocus.com/bid/54868 · Note