Privilege escalation in Tinyproxy Project
CVE-2017-11747
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.
Vulnerability class: Privilege Escalation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.003 (19.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 19.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/tinyproxy/tinyproxy/issues/106 (Patch, Third Party Advisory, Issue Tracking)
- lists.debian.org/debian-lts-announce/2020/03/msg00037.html (mailing-list)
Frequently asked questions
- What is CVE-2017-11747?
- CVE-2017-11747 is a medium-severity vulnerability in Tinyproxy Project, classified under Improper Privilege Management. CVSS score: 5.5/10. Published 2017-07-30.
- How severe is CVE-2017-11747?
- Medium severity. CVSS v3 base score is 5.5 out of 10.