CVE Vulnerabilities

CVE-2016-10009

Untrusted Search Path

Published: Jan 05, 2017 | Modified: Sep 11, 2018
CVSS 3.x
7.3
HIGH
Source:
NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CVSS 2.x
7.5 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P
RedHat/V2
4.6 MODERATE
AV:N/AC:H/Au:S/C:P/I:P/A:P
RedHat/V3
6.6 MODERATE
CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Ubuntu

Untrusted search path vulnerability in ssh-agent.c in ssh-agent in OpenSSH before 7.4 allows remote attackers to execute arbitrary local PKCS#11 modules by leveraging control over a forwarded agent-socket.

Weakness

The application searches for critical resources using an externally-supplied search path that can point to resources that are not under the application’s direct control.

Affected Software

Name Vendor Start Version End Version
Openssh Openbsd * 7.3
Red Hat Enterprise Linux 7 RedHat openssh-0:7.4p1-11.el7 *
Openssh Ubuntu esm-infra/xenial *
Openssh Ubuntu precise *
Openssh Ubuntu precise/esm *
Openssh Ubuntu trusty *
Openssh Ubuntu trusty/esm *
Openssh Ubuntu upstream *
Openssh Ubuntu vivid/stable-phone-overlay *
Openssh Ubuntu vivid/ubuntu-core *
Openssh Ubuntu xenial *
Openssh Ubuntu yakkety *

Extended Description

This might allow attackers to execute their own programs, access unauthorized data files, or modify configuration in unexpected ways. If the application uses a search path to locate critical resources such as programs, then an attacker could modify that search path to point to a malicious program, which the targeted application would then execute. The problem extends to any type of critical resource that the application trusts. Some of the most common variants of untrusted search path are:

Potential Mitigations

References