CVE-2009-4491
CRITICAL
9.8
CVSS Score
Published: January 13, 2010 at 12:00 AM UTC
Updated: June 16, 2026 at 11:13 PM UTC
3 products affected across 2 vendorsThttpdThttpdThttpd HTTP Server
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Severity
CRITICAL9.8
Exploit prediction
EPSS 14%
SSVC
PoC
Description
thttpd 2.25b0 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.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.
References (4)
Mailing Listx_refsource_BUGTRAQ
Source: [email protected]
http://www.securityfocus.com/archive/1/508830/100/0/threadedx_refsource_MISCExploit
Source: [email protected]
http://www.ush.it/team/ush/hack_httpd_escape/adv.txtSSVC — Action Prioritization
SSVCPoCAutomatableTotal impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
9.8CRITICALCISA-ADP
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-20CWE-94
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