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Advisories

OpenLiteSpeed before 1.9.3 Local Privilege Escalation via lsup.sh Auto-Update

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severity
medium
date
Affecting

  • openlitespeed >= 0, < 1.9.3

CWE
  • CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition
CVSS
5.4
CVSS V4 Vector
CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Credit
FCI Cloud Security
Description
OpenLiteSpeed before 1.9.3 contains a local privilege escalation vulnerability in admin/misc/lsup.sh that runs unverified update packages from a nobody-writable directory as root. Attackers controlling the nobody web process can replace the package in /usr/local/lsws/autoupdate/ before extraction, so its install.sh runs as root on the next update.

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