Vulnerability in Apache HTTP Server
CVE-2022-22720
Apache HTTP Server 2.4.52 and earlier fails to close inbound connection when errors are encountered discarding the request body, exposing the server to HTTP Request Smuggling
Vulnerability class: HTTP Request Smuggling
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.282 (98.1th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.282 · newest: 0.282 · change: 0.000
Affected products
- Apache HTTP Server
- Apache Software Foundation HTTP Server — versions Apache HTTP Server 2.4
- Apple macOS
- Apple Mac OS X — versions 10.15.7
- Oracle Enterprise Manager Ops Center — versions 12.4.0.0
- Oracle HTTP Server — versions 12.2.1.3.0, 12.2.1.4.0
- Oracle Zfs Storage Appliance Kit — versions 8.8
- Debian Linux — versions 9.0
- Fedoraproject Fedora — versions 34, 35, 36
Weakness classification (CWE)
Public proof-of-concept exploits
References
- httpd.apache.org/security/vulnerabilities_24.html (Vendor Advisory)
- www.openwall.com/lists/oss-security/2022/03/14/3 (mailing-list, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.debian.org/debian-lts-announce/2022/03/msg00033.html (mailing-list, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- www.oracle.com/security-alerts/cpuapr2022.html (Patch, Third Party Advisory)
- security.netapp.com/advisory/ntap-20220321-0001/ (Third Party Advisory)
- seclists.org/fulldisclosure/2022/May/33 (mailing-list, Mailing List, Third Party Advisory)
- seclists.org/fulldisclosure/2022/May/35 (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-22720?
- CVE-2022-22720 is a critical-severity vulnerability in Apache HTTP Server, classified under Inconsistent Interpretation of HTTP Requests (HTTP Request/Response Smuggling). CVSS score: 9.8/10. Published 2022-03-14.
- How severe is CVE-2022-22720?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2022-22720 known to be exploited?
- 19 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.