Resource exhaustion in Apache HTTP Server
CVE-2024-27316
HTTP/2 incoming headers exceeding the limit are temporarily buffered in nghttp2 in order to generate an informative HTTP 413 response. If a client does not stop sending headers, this leads to memory exhaustion.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.913 (99.8th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.913 · newest: 0.913 · change: 0.000
Affected products
- Apache HTTP Server
- Apache Software Foundation HTTP Server — versions 2.4.17
- NetApp Ontap — versions 9
- Fedoraproject Fedora — versions 38, 39, 40
Weakness classification (CWE)
Public proof-of-concept exploits
References
- httpd.apache.org/security/vulnerabilities_24.html (Product, vendor-advisory, Release Notes)
- www.openwall.com/lists/oss-security/2024/04/03/16
- www.openwall.com/lists/oss-security/2024/04/04/4 (Mailing List)
- support.apple.com/kb/HT214119
- seclists.org/fulldisclosure/2024/Jul/18
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2024-27316?
- CVE-2024-27316 is a high-severity vulnerability in Apache HTTP Server, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2024-04-04.
- How severe is CVE-2024-27316?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2024-27316 known to be exploited?
- 13 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.