Critical severity · published Jan 13, 2010
CVE-2009-4491
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…
9.8
CVSS
13.7%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)13.7% · higher than 96% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TH
Thttpd · Acme
2.25 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2009-4491
CVE.org
https://www.cve.org/CVERecord?id=CVE-2009-4491
packetstormsecurity.com
http://packetstormsecurity.com/files/175949/m-privacy-TightGate-Pro-Code-Execution-Insecure-Permissions.html
seclists.org
http://seclists.org/fulldisclosure/2023/Nov/13
www.securityfocus.com
http://www.securityfocus.com/archive/1/508830/100/0/threaded
Exploit
http://www.ush.it/team/ush/hack_httpd_escape/adv.txt
More from Thttpd
9.8
CVE-2007-0158
thttpd 2007 has buffer underflow
9.8
CVE-2017-17663
The htpasswd implementation of mini_httpd before v1.28 and of thttpd before v2.28 is affected by a buffer overflow that can be exploited remotely to perform code execution
9.8
CVE-2003-0899
Buffer overflow in defang in libhttpd.c for thttpd 2.21 to 2.23b1 allows remote attackers to execute arbitrary code via requests that contain '<' or '>' characters, which trigger…
9.8
CVE-2001-1496
Off-by-one buffer overflow in Basic Authentication in Acme Labs thttpd 1.95 through 2.20 allows remote attackers to cause a denial of service and possibly execute arbitrary code
5.5
CVE-2012-5640
thttpd has a local DoS vulnerability via specially-crafted .htpasswd files