CVE-2009-4488 EXPLOIT
9.8
CRITICAL · CVSS 3.1 · EPSS 13% (pctl 96)
Patch early
A public exploit exists.
Description
Varnish 2.0.6 writes data to a log file without sanitizing non-printable characters, which might allow remote attackers to modify a window's title, or possibly execute arbitrary commands or overwrite files, via an HTTP request containing an escape sequence for a terminal emulator. NOTE: the vendor disputes the significance of this report, stating that "This is not a security problem in Varnish or any other piece of software which writes a logfile. The real problem is the mistaken belief that you can cat(1) a random logfile to your terminal safely.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 13% — more likely to be exploited than 96% of all CVEs |
| Weakness | CWE-20 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2010-01-13 |
| Last modified | 2026-06-16 |
Affected (1)
| Vendor | Product |
|---|---|
| varnish.projects.linpro | varnish |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Varnish 2.0.6 - 'Terminal Escape Sequence in Logs' Command Injection | 2010-01-11 |
References
- http://www.securityfocus.com/archive/1/508830/100/0/threaded
- http://www.securityfocus.com/bid/37713
- http://www.ush.it/team/ush/hack_httpd_escape/adv.txt
- http://www.securityfocus.com/archive/1/508830/100/0/threaded
- http://www.securityfocus.com/bid/37713
- http://www.ush.it/team/ush/hack_httpd_escape/adv.txt
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