# CVE-2017-11747: tinyproxy: main.c in Tinyproxy 1.8.4 and earlier creates a /run/tinyproxy/tinyproxy.pid file after dropping privileges to a non-...

CVE-2017-11747 is fixed in 2 products on 1 platform, first by tinyproxy 1.8.4-5ubuntu0.1~esm1, released July 30, 2017. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2017-11747
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0029
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 30, 2017

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | tinyproxy Ubuntu 18.04.6 LTS (bionic) | 1.8.4-5ubuntu0.1~esm1 | [tinyproxy 1.8.4-5ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-tinyproxy-1.8.4-5ubuntu0.1-esm1.md) | Jul 30, 2017 |
| Linux | tinyproxy-bin Ubuntu 18.04.6 LTS (bionic) | 1.8.4-5ubuntu0.1~esm1 | [tinyproxy-bin 1.8.4-5ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-tinyproxy-bin-1.8.4-5ubuntu0.1-esm1.md) | Jul 30, 2017 |

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Data as of 2026-11-07T12:40:37Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo