Vulnerability · Published Aug 17, 2021 · Assigned by mitre
CVE-2021-39240
High 7.5
In plain English
A high-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 2.2% (higher than 83% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)2.2%top 17.3% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
An issue was discovered in HAProxy 2.2 before 2.2.16, 2.3 before 2.3.13, and 2.4 before 2.4.3. It does not ensure that the scheme and path portions of a URI have the expected characters. For example, the authority field (as observed on a target HTTP/2 server) might differ from what the routing rules were intended to achieve.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | haproxy | 2.2.16-1 | DEBIAN-CVE-2021-39240 |
| Debian:13 | haproxy | 2.2.16-1 | DEBIAN-CVE-2021-39240 |
| Debian:14 | haproxy | 2.2.16-1 | DEBIAN-CVE-2021-39240 |
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=a495e0d94876c9d39763db319f609351907a31e8 x_refsource_MISC
- https://git.haproxy.org/?p=haproxy.git%3Ba=commit%3Bh=4b8852c70d8c4b7e225e24eb58258a15eb54c26e 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