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Vulnerability record · CVE-2017-11747 · published 30 July 2017

CVE-2017-11747: Tinyproxy project tinyproxy improper privilege management vulnerability

TTinyproxy Project · Tinyproxy

main.c in Tinyproxy 1.8.4 and earlier creates a /run/tinyproxy/tinyproxy.pid file after dropping privileges to a non-root account, which might allow local users to kill arbitrary processes by leveraging access to this non-root account for tinyproxy.pid modification before a root script executes a "kill `cat /run/tinyproxy/tinyproxy.pid`" command.

5.5 CVSS 3.0 Medium EPSS 0.29% · top 80.5% CWE-269 · Improper privilege management
5.5CVSS 3.0 base score, v2 2.1
0.29%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

main.c in Tinyproxy 1.8.4 and earlier creates a /run/tinyproxy/tinyproxy.pid file after dropping privileges to a non-root account, which might allow local users to kill arbitrary processes by leveraging access to this non-root account for tinyproxy.pid modification before a root script executes a "kill `cat /run/tinyproxy/tinyproxy.pid`" command.

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/tinyproxy/tinyproxy/issues/106 Issue TrackingPatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/03/msg00037.html
https://github.com/tinyproxy/tinyproxy/issues/106 Issue TrackingPatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/03/msg00037.html

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2017-11747), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.