Strix
26.1K

CVE-2009-4491

CRITICALCVSS 9.8/10EPSS 13.47%

Last modified

CVE-2009-4491 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 13.47% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
13.47%

96.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
AcmeThttpd2.25B

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is 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 commands or overwrite files, via an HTTP request containing an escape sequence for a terminal emulator.
How severe is CVE-2009-4491?
CVE-2009-4491 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 13.47% probability of exploitation in the next 30 days.
How do I fix CVE-2009-4491?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2009-4491?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST