Vulnerability in Canonical Libpam-Modules

CVE-2011-3628

Untrusted search path vulnerability in pam_motd (aka the MOTD module) in libpam-modules before 1.1.3-2ubuntu2.1 on Ubuntu 11.10, before 1.1.2-2ubuntu8.4 on Ubuntu 11.04, before 1.1.1-4ubuntu2.4 on Ubuntu 10.10, before 1.1.1-2ubuntu5.4 on Ubuntu 10.04 LTS, and before 0.99.7.1-5ubuntu6.5 on Ubuntu 8.04 LTS, when using certain configurations such as "session optional pam_motd.so", allows local users to gain privileges by modifying the PATH environment variable to reference a malicious command, as demonstrated via uname.

EPSS: 0.004 (30.9th percentile) — read the EPSS interpretation.

Affected products

Canonical Libpam-modules — versions 0.9.7, 1.1.1, 1.1.2
Canonical Ubuntu_linux — versions 8.04, 10.04, 10.10
N/a — versions n/a

References

secalert@redhat.com (x_refsource_CONFIRM)
secalert@redhat.com (x_refsource_UBUNTU, vendor-advisory, Vendor Advisory)