ALT-PU-2021-3328-1
Package modsecurity updated to version 3.0.6-alt1 for branch sisyphus in task 290349.
Closed vulnerabilities
Published: 2021-12-07
BDU:2022-00191
Уязвимость модуля Apache для усиления безопасности веб-приложений modsecurity-apache, связанная с ошибками при обработке JSON-объектов, позволяющая нарушителю вызвать отказ в обслуживании
Severity: HIGH (7.5)
Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References:
Published: 2021-12-08
Modified: 2024-11-21
Modified: 2024-11-21
CVE-2021-42717
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.
Severity: HIGH (7.5)
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References:
- [debian-lts-announce] 20220528 [SECURITY] [DLA 3031-1] modsecurity-apache security update
- [debian-lts-announce] 20220528 [SECURITY] [DLA 3031-1] modsecurity-apache security update
- DSA-5023
- DSA-5023
- https://www.oracle.com/security-alerts/cpuapr2022.html
- 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.trustwave.com/en-us/resources/blogs/spiderlabs-blog/modsecurity-dos-vulnerability-in-json-parsing-cve-2021-42717/