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Fencer Vulns
high 7.8

CVE-2009-0034 json

parse.c in sudo 1.6.9p17 through 1.6.9p19 does not properly interpret a system group (aka %group) in the sudoers file during authorization…

published 2009-01-30 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-0045

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 35%
public exploits
0
none known

Summary

parse.c in sudo 1.6.9p17 through 1.6.9p19 does not properly interpret a system group (aka %group) in the sudoers file during authorization decisions for a user who belongs to that group, which allows local users to leverage an applicable sudoers file and gain root privileges via a sudo command.

Patch / fix

  • sudo Debian 14, Debian 13, Debian 12 1.6.9p17-2

debian advisories DEBIAN-CVE-2009-0034

  • sudo RHEL 5 1.6.9p17-3.el5_3.1

red hat advisories RHSA-2009:0267

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2009-0034 updated cvss 6.6

sudo: incorrect handling of groups in Runas_User

  • Red Hat Enterprise Linux (v. 5 server) sudo 1.6.9p17-3.el5_3.1 Red Hat Enterprise Linux Desktop (v. 5 client) sudo 1.6.9p17-3.el5_3.1
    fixed: vendor fix RHSA-2009:0267

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.41% chance of exploitation in the next 30 days, higher than 35% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.9 AV:L/AC:M/Au:N/C:C/I:C/A:C

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.