CVE-2023-46136 — Uncontrolled Resource Consumption in Werkzeug
Severity
7.5HIGHNVD
CNA8.0
EPSS
0.6%
top 29.86%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedOct 25
Latest updateOct 15
Description
Werkzeug is a comprehensive WSGI web application library. If an upload of a file that starts with CR or LF and then is followed by megabytes of data without these characters: all of these bytes are appended chunk by chunk into internal bytearray and lookup for boundary is performed on growing buffer. This allows an attacker to cause a denial of service by sending crafted multipart data to an endpoint that will parse it. The amount of CPU time required can block worker processes from handling leg…
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6
Affected Packages3 packages
Patches
🔴Vulnerability Details
4GHSA▶
Werkzeug DoS: High resource usage when parsing multipart/form-data containing a large part with CR/LF character at the beginning↗2023-10-25
OSV▶
Werkzeug DoS: High resource usage when parsing multipart/form-data containing a large part with CR/LF character at the beginning↗2023-10-25
CVEList▶
Werkzeug vulnerable to high resource usage when parsing multipart/form-data containing a large part with CR/LF character at the beginning↗2023-10-24