Buffer overflow in Apache Http_server
CVE-2021-44790
A carefully crafted request body can cause a buffer overflow in the mod_lua multipart parser (r:parsebody() called from Lua scripts). The Apache httpd team is not aware of an exploit for the vulnerabilty though it might be possible to craf…
Vulnerability class: Buffer Overflow
EPSS: 0.971 (99.9th percentile) — read the EPSS interpretation.
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.
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
- Netapp Cloud_backup
- Oracle Communications_element_manager
- Oracle Communications_operations_monitor — versions 4.3, 4.4, 5.0
- Oracle Communications_session_report_manager
- Oracle Communications_session_route_manager
- Oracle Http_server — versions 12.2.1.3.0, 12.2.1.4.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@apache.org (Vendor Advisory)
- security@apache.org (mailing-list, Mailing List, Third Party Advisory)
- security@apache.org (vendor-advisory, Third Party Advisory)
- security@apache.org (vendor-advisory, Third Party Advisory)
- security@apache.org (Patch, Third Party Advisory)
- security@apache.org (Third Party Advisory)
- security@apache.org (Third Party Advisory)
- security@apache.org (Third Party Advisory)
- security@apache.org (vendor-advisory, Third Party Advisory)
- security@apache.org (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-44790?
- CVE-2021-44790 is a critical-severity vulnerability in Apache Http_server, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2021-12-20.
- How severe is CVE-2021-44790?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2021-44790 known to be exploited?
- 24 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.