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CVE-2015-8325

Published: 30 April 2016

The do_setup_env function in session.c in sshd in OpenSSH through 7.2p2, when the UseLogin feature is enabled and PAM is configured to read .pam_environment files in user home directories, allows local users to gain privileges by triggering a crafted environment for the /bin/login program, as demonstrated by an LD_PRELOAD environment variable.

Notes

AuthorNote
tyhicks
Ubuntu is not affected in the default configuration since
UseLogin is disabled in sshd_config

Priority

Low

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package Release Status
openssh
Launchpad, Ubuntu, Debian
precise
Released (1:5.9p1-5ubuntu1.9)
trusty
Released (1:6.6p1-2ubuntu2.7)
upstream
Released (1:7.2p2-3)
wily
Released (1:6.9p1-2ubuntu0.2)
xenial Not vulnerable
(1:7.2p2-3)
yakkety Not vulnerable
(1:7.2p2-3)
zesty Not vulnerable
(1:7.2p2-3)
Patches:
upstream: https://anongit.mindrot.org/openssh.git/commit/?id=85bdcd7c92fe7ff133bbc4e10a65c91810f88755

Severity score breakdown

Parameter Value
Base score 7.8
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H