Vulnerability in Haproxy
CVE-2021-39241
An issue was discovered in HAProxy 2.0 before 2.0.24, 2.2 before 2.2.16, 2.3 before 2.3.13, and 2.4 before 2.4.3. An HTTP method name may contain a space followed by the name of a protected resource. It is possible that a server would interpret this as a request for that protected resource, such as in the "GET /admin? HTTP/1.1 /static/images HTTP/1.1" example.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.017 (75.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 75.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.018 · newest: 0.017 · change: -0.001
Affected products
- Haproxy
- Debian Linux — versions 11.0
- Fedoraproject Fedora — versions 33, 34
References
- www.mail-archive.com/haproxy@formilux.org/msg41041.html
- git.haproxy.org/
- www.debian.org/security/2021/dsa-4960 (vendor-advisory, 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)
Frequently asked questions
- What is CVE-2021-39241?
- CVE-2021-39241 is a medium-severity vulnerability in Haproxy. CVSS score: 5.3/10. Published 2021-08-17.
- How severe is CVE-2021-39241?
- Medium severity. CVSS v3 base score is 5.3 out of 10.