CVE-2021-42717
- Source
- https://cve.org/CVERecord?id=CVE-2021-42717
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-42717.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2021-42717
- Aliases
- Downstream
- Related
- Published
- 2021-12-07T22:15:06.950Z
- Modified
- 2026-02-12T07:36:22.514544Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
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.
- References
-
- https://lists.debian.org/debian-lts-announce/2022/05/msg00042.html
- https://www.debian.org/security/2021/dsa-5023
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/modsecurity-dos-vulnerability-in-json-parsing-cve-2021-42717/
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://lists.debian.org/debian-lts-announce/2022/05/msg00042.html
- https://www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/modsecurity-dos-vulnerability-in-json-parsing-cve-2021-42717/
- https://www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/modsecurity-dos-vulnerability-in-json-parsing-cve-2021-42717/
Affected packages
Git / github.com/fasterxml/jackson-databind
Affected versions
2.*
2.2.0c
2.6.0-rc3b
jackson-databind-2.*
jackson-databind-2.0.0
jackson-databind-2.0.1
jackson-databind-2.0.2
jackson-databind-2.0.4
jackson-databind-2.1.0
jackson-databind-2.1.1
jackson-databind-2.2.0
jackson-databind-2.2.0-rc1
jackson-databind-2.2.1
jackson-databind-2.2.2
jackson-databind-2.3.0
jackson-databind-2.3.0-rc1
jackson-databind-2.3.1
jackson-databind-2.4.0
jackson-databind-2.4.0-rc1
jackson-databind-2.4.0-rc2
jackson-databind-2.4.0-rc3
jackson-databind-2.4.1
jackson-databind-2.4.1.1
jackson-databind-2.4.1.2
jackson-databind-2.4.1.3
jackson-databind-2.4.2
jackson-databind-2.4.3
jackson-databind-2.4.4
jackson-databind-2.4.5
jackson-databind-2.4.5.1
jackson-databind-2.4.6
jackson-databind-2.5.0
jackson-databind-2.5.0-rc1
jackson-databind-2.5.1
jackson-databind-2.5.2
jackson-databind-2.5.3
jackson-databind-2.5.4
jackson-databind-2.5.5
jackson-databind-2.6.0
jackson-databind-2.6.0-rc1
jackson-databind-2.6.0-rc2
jackson-databind-2.6.0-rc4
jackson-databind-2.6.1
jackson-databind-2.6.2
jackson-databind-2.6.3
jackson-databind-2.6.4
jackson-databind-2.6.5
jackson-databind-2.6.6
jackson-databind-2.6.7
jackson-databind-2.7.0
jackson-databind-2.7.0-rc1
jackson-databind-2.7.0-rc2
jackson-databind-2.7.0-rc3
jackson-databind-2.7.1
jackson-databind-2.7.1-1
jackson-databind-2.7.2
jackson-databind-2.7.3
jackson-databind-2.7.4
jackson-databind-2.7.5
jackson-databind-2.7.6
jackson-databind-2.7.7
jackson-databind-2.7.8
jackson-databind-2.7.9
jackson-databind-2.7.9.1
jackson-databind-2.7.9.2
jackson-databind-2.8.0
jackson-databind-2.8.1
jackson-databind-2.8.10
jackson-databind-2.8.11
jackson-databind-2.8.11.1
jackson-databind-2.8.2
jackson-databind-2.8.3
jackson-databind-2.8.4
jackson-databind-2.8.5
jackson-databind-2.8.6
jackson-databind-2.8.7
jackson-databind-2.8.8
jackson-databind-2.8.8.1
jackson-databind-2.8.9
jackson-databind-2.9.0
jackson-databind-2.9.0.pr1
jackson-databind-2.9.0.pr2
jackson-databind-2.9.0.pr3
jackson-databind-2.9.0.pr4
jackson-databind-2.9.1
jackson-databind-2.9.2
jackson-databind-2.9.3
jackson-databind-2.9.4