CVE-2009-2936 in the critical feed json
The Command Line Interface (aka Server CLI or administration interface) in the master process in the reverse proxy server in Varnish before…
published 2010-04-05 16 y ago modified 2026-06-16 4 mo ago also EUVD-2009-2924
- cvss
- 7.5
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 63.8%
- EPSS 63.8% chance of exploitation in 30 days, percentile 99.2%
- public exploits
- 3
- Metasploit, Exploit-DB
Summary
The Command Line Interface (aka Server CLI or administration interface) in the master process in the reverse proxy server in Varnish before 2.1.0 does not require authentication for commands received through a TCP port, which allows remote attackers to (1) execute arbitrary code via a vcl.inline directive that provides a VCL configuration file containing inline C code; (2) change the ownership of the master process via param.set, stop, and start directives; (3) read the initial line of an arbitrary file via a vcl.load directive; or (4) conduct cross-site request forgery (CSRF) attacks that leverage a victim's location on a trusted network and improper input validation of directives. NOTE: the vendor disputes this report, saying that it is "fundamentally misguided and pointless.
Patch / fix
- varnish Debian 13, Debian 12 2.1.0-2
debian advisories DEBIAN-CVE-2009-2936
Timeline
- Published
- First public exploit (EDB-35581)
Exploit prediction
63.82% chance of exploitation in the next 30 days, higher than 99.2% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Metasploit auxiliary/scanner/varnish/varnish_cli_file_read Varnish Cache CLI File Read metasploit auxiliary, normal rank
- Metasploit auxiliary/scanner/varnish/varnish_cli_login Varnish Cache CLI Login Utility metasploit auxiliary, normal rank
- EDB-35581 Varnish Cache CLI Interface - Remote Code Execution (Metasploit) remote, 2014-12-19
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-287 Improper Authentication
References
Sources
- CVE List CVE-2009-2936
- NVD CVE-2009-2936
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.