Vulnerability in Apache HTTP Server
CVE-2023-27522
HTTP Response Smuggling vulnerability in Apache HTTP Server via mod_proxy_uwsgi. This issue affects Apache HTTP Server: from 2.4.30 through 2.4.55. Special characters in the origin response header can truncate/split the response forwarded to the client.
Vulnerability class: HTTP Request Smuggling
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:H/A:N.
EPSS exploit prediction
EPSS: 0.021 (81.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 81.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000
Affected products
- Apache HTTP Server
- Apache Software Foundation HTTP Server — versions 2.4.30
- Unbit Uwsgi
- Debian Linux — versions 10.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- httpd.apache.org/security/vulnerabilities_24.html (vendor-advisory, Vendor Advisory)
- lists.debian.org/debian-lts-announce/2023/04/msg00028.html (Third Party Advisory)
- security.gentoo.org/glsa/202309-01 (Third Party Advisory)
Frequently asked questions
- What is CVE-2023-27522?
- CVE-2023-27522 is a high-severity vulnerability in Apache HTTP Server, classified under Inconsistent Interpretation of HTTP Requests (HTTP Request/Response Smuggling). CVSS score: 7.5/10. Published 2023-03-07.
- How severe is CVE-2023-27522?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2023-27522 known to be exploited?
- 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.