Vulnerability · Published Aug 17, 2021 · Assigned by mitre
CVE-2021-39241
Medium 5.3
In plain English
A medium-severity security flaw in the haproxy package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.7% (higher than 77% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)5.3Medium
Exploit odds (30 days)1.7%top 22.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | haproxy | 2.2.16-1 | DEBIAN-CVE-2021-39241 |
| Debian:13 | haproxy | 2.2.16-1 | DEBIAN-CVE-2021-39241 |
| Debian:14 | haproxy | 2.2.16-1 | DEBIAN-CVE-2021-39241 |
Affected products (as reported)
References
- https://www.mail-archive.com/haproxy%40formilux.org/msg41041.html x_refsource_MISC
- https://git.haproxy.org/?p=haproxy.git%3Ba=commit%3Bh=89265224d314a056d77d974284802c1b8a0dc97f x_refsource_MISC
- DSA-4960 vendor-advisory, x_refsource_DEBIAN
- FEDORA-2021-e6557245e8 vendor-advisory, x_refsource_FEDORA
- FEDORA-2021-3ab4512c98 vendor-advisory, x_refsource_FEDORA