PT-2023-11825 · Uptime · Uptimed

Michael Orlitzky · Published 2023-01-25 · Updated 2025-04-01 · CVE-2020-36657

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions uptimed versions prior to 0.4.6-r1

Description The issue allows local users with access to the uptimed user account to gain root privileges. This is achieved by creating a hard link within the /var/spool/uptimed directory, taking advantage of an unsafe chown -R call.

Recommendations For versions prior to 0.4.6-r1, update to version 0.4.6-r1 or later to resolve the issue. As a temporary workaround, consider restricting access to the /var/spool/uptimed directory to prevent the creation of hard links.

Exploit

Fix

Link Following

Weakness Enumeration

CWE-59

Related Identifiers

CVE-2020-36657

Affected Products

Uptimed

References · 9

• 🔥 https://bugs.gentoo.org/630810 · Exploit
• https://osv.dev/vulnerability/CVE-2020-36657 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2020-36657 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2020-36657 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2020-36657 · Security Note
• https://security.gentoo.org/glsa/202305-14 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-36657 · Vendor Advisory
• https://t.me/cibsecurity/56993 · Telegram Post
• https://t.me/cvenotify/117279 · Telegram Post