CVE-2021-44224 in apache http server
LogPulse has a published detection rule for this CVE: it raises a notable when someone tries to exploit it.
What the vulnerability is
A crafted URI sent to httpd configured as a forward proxy (ProxyRequests on) can cause a crash (NULL pointer dereference) or, for configurations mixing forward and reverse proxy declarations, can allow for requests to be directed to a declared Unix Domain Socket endpoint (Server Side Request Forgery). This issue affects Apache HTTP Server 2.4.7 up to 2.4.51 (included).
Affected software: apache http server, tenable.sc, oracle communications element manager, oracle communications operations monitor, oracle communications session report manager, oracle communications session route manager, oracle http server, oracle instantis enterprisetrack, fedoraproject fedora, debian linux
Scores
- CVSS: 8.2 (high)
- EPSS: 82.30% chance of exploitation in the next 30 days
- CISA KEV: Not listed
- Published: 2021-12-20
What LogPulse has for it
- Detection rule: Yes, published
- Agent check (vulnerable version): No
- Mitigation: No
Source data: NIST NVD, CISA KEV and FIRST EPSS. LogPulse processes new CVEs every hour.
We build every detection with great care, but no two environments are the same. Log sources, parsing and configuration differ, so test a detection in your own environment before you rely on it.