PT-2018-9581 · Unknown · Log-User-Session

Published 2018-12-20 · Updated 2020-06-24 · CVE-2018-1000857

Positive Technologies (AI Summary)

CVSS v2.0

9.0

High

Base vector

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

Name of the Vulnerable Software and Affected Versions log-user-session versions 0.7 and earlier

Description The issue allows for a Directory Traversal vulnerability in the Main SUID-binary /usr/local/bin/log-user-session, potentially resulting in User to root privilege escalation. This can be exploited by a malicious unprivileged user executing the vulnerable binary or through environment variable manipulation, with similarities to shell-shock.

Recommendations For log-user-session versions 0.7 and earlier, consider restricting access to the /usr/local/bin/log-user-session binary until a patch is available. As a temporary workaround, avoid using environment variables that could be manipulated to exploit the vulnerability.

Exploit

Fix

Path traversal

Weakness Enumeration

CWE-22

Related Identifiers

CVE-2018-1000857

Affected Products

Log-User-Session

References · 3

• 🔥 https://halfdog.net/Security/2018/LogUserSessionLocalRootPrivilegeEscalation · Exploit
• https://osv.dev/vulnerability/CVE-2018-1000857 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-1000857 · Security Note