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Advisories

Sudo through 1.9.17p2 Intercept Policy Bypass via execveat

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severity
high
date
Affecting

  • sudo <= 1.9.17p2

CWE
  • CWE-693 Protection Mechanism Failure
CVSS
8.5
CVSS V4 Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Credit
XlabAI Team of Tencent Xuanwu Lab, Guannan Wang, Zhanpeng Liu, Guancheng Li, Nofil Qasim, Quentin Chalabi
Description
Sudo through 1.9.17p2 fails to apply intercept policy checks to the execveat system call in ptrace-based intercept mode. Users permitted to run specific commands can execute denied programs by calling execveat directly or through fexecve, bypassing policy enforcement and logging.

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