CVE-2021-42717

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Summary

CVECVE-2021-42717
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-12-07 22:15:00 UTC
Updated2022-09-03 03:33:00 UTC
DescriptionModSecurity 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.

Risk And Classification

Problem Types: CWE-674

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Debian Debian Linux 10.0 All All All
Operating System Debian Debian Linux 11.0 All All All
Operating System Debian Debian Linux 9.0 All All All
Application F5 Nginx Modsecurity Waf r24 All All All
Application F5 Nginx Modsecurity Waf r25 All All All
Application Oracle Http Server 12.2.1.3.0 All All All
Application Oracle Http Server 12.2.1.4.0 All All All
Application Oracle Zfs Storage Appliance Kit 8.8 All All All
Application Trustwave Modsecurity All All All All

References

ReferenceSourceLinkTags
Oracle Critical Patch Update Advisory - April 2022 MISC www.oracle.com
[SECURITY] [DLA 3031-1] modsecurity-apache security update MLIST lists.debian.org
Debian -- Security Information -- DSA-5023-1 modsecurity-apache DEBIAN www.debian.org
ModSecurity DoS Vulnerability in JSON Parsing (CVE-2021-42717) | Trustwave MISC www.trustwave.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 178946 Debian Security Update for modsecurity-apache (DSA 5023-1)
  • 179326 Debian Security Update for modsecurity-apache (DLA 3031-1)
  • 184295 Debian Security Update for modsecurity-apachemodsecurity (CVE-2021-42717)
  • 199752 Ubuntu Security Notification for ModSecurity Vulnerabilities (USN-6370-1)
  • 296061 Oracle Solaris 11.4 Support Repository Update (SRU) 42.113.1 Missing (CPUJAN2022)
  • 377911 Oracle Hypertext Transfer Protocol Server (HTTP Server) Multiple Vulnerabilities (CPUJAN2023)
  • 671396 EulerOS Security Update for mod_security (EulerOS-SA-2022-1332)
  • 671426 EulerOS Security Update for mod_security (EulerOS-SA-2022-1355)
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