7.5

CVE-2021-42717

Exploit
ModSecurity 3.x through 3.0.5 mishandles excessively nested JSON objects. Crafted JSON objects with nesting tens-of-thousands deep could result in the web server being unable to service legitimate requests. Even a moderately large (e.g., 300KB) HTTP request can occupy one of the limited NGINX worker processes for minutes and consume almost all of the available CPU on the machine. Modsecurity 2 is similarly vulnerable: the affected versions include 2.8.0 through 2.9.4.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Owasp ≫ Modsecurity Version >= 3.0.0 < 3.0.6
Trustwave ≫ Modsecurity Version >= 2.0.0 < 2.9.5
F5 ≫ Nginx Modsecurity Waf Version r24
F5 ≫ Nginx Modsecurity Waf Version r25
Debian ≫ Debian Linux Version 9.0
Debian ≫ Debian Linux Version 10.0
Debian ≫ Debian Linux Version 11.0
Oracle ≫ HTTP Server Version 12.2.1.3.0
Oracle ≫ HTTP Server Version 12.2.1.4.0
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 3.15% 0.869
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NIST 5 10 2.9
AV:N/AC:L/Au:N/C:N/I:N/A:P
CWE-674 Uncontrolled Recursion

The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack.

https://www.oracle.com/security-alerts/cpuapr2022.html
Patch
Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/05/msg00042.html
Third Party Advisory
Mailing List
https://www.debian.org/security/2021/dsa-5023
Third Party Advisory
https://www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/modsecurity-dos-vulnerability-in-json-parsing-cve-2021-42717/
Vendor Advisory
Exploit
Mitigation