CVE-2021-39241
haproxy: an HTTP method name may contain a space followed by the name of a protected resource
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
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.
Se ha detectado un problema en HAProxy versiones 2.0 anteriores a 2.0.24, versiones 2.2 anteriores a 2.2.16, versiones 2.3 anteriores a 2.3.13 y versiones 2.4 anteriores a 2.4.3. Un nombre de método HTTP puede contener un espacio seguido del nombre de un recurso protegido. Es posible que un servidor interpretaría esto como una petición de ese recurso protegido, como en el método "GET /admin? HTTP/1.1 /static/images HTTP/1.1".
haproxy has an input validation flaw that could allow a remote attacker to bypass implemented security restrictions. An HTTP method name may contain a space followed by the name of a protected resource. Given this, It is possible that an server would interpret this as a request for that protected resource. The highest threat from this vulnerability is possible confidentiality concerns.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2021-08-17 CVE Reserved
- 2021-08-17 CVE Published
- 2024-08-04 CVE Updated
- 2024-10-18 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-20: Improper Input Validation
CAPEC
References (7)
| URL | Tag | Source |
|---|---|---|
| https://git.haproxy.org/?p=haproxy.git%3Ba=commit%3Bh=89265224d314a056d77d974284802c1b8a0dc97f | X_refsource_misc | |
| https://www.mail-archive.com/haproxy%40formilux.org/msg41041.html | X_refsource_misc |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
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Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Haproxy Search vendor "Haproxy" | Haproxy Search vendor "Haproxy" for product "Haproxy" | >= 2.0.0 < 2.0.24 Search vendor "Haproxy" for product "Haproxy" and version " >= 2.0.0 < 2.0.24" | - |
Affected
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| Haproxy Search vendor "Haproxy" | Haproxy Search vendor "Haproxy" for product "Haproxy" | >= 2.2.0 < 2.2.16 Search vendor "Haproxy" for product "Haproxy" and version " >= 2.2.0 < 2.2.16" | - |
Affected
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| Haproxy Search vendor "Haproxy" | Haproxy Search vendor "Haproxy" for product "Haproxy" | >= 2.3.0 < 2.3.13 Search vendor "Haproxy" for product "Haproxy" and version " >= 2.3.0 < 2.3.13" | - |
Affected
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| Haproxy Search vendor "Haproxy" | Haproxy Search vendor "Haproxy" for product "Haproxy" | >= 2.4.0 < 2.4.3 Search vendor "Haproxy" for product "Haproxy" and version " >= 2.4.0 < 2.4.3" | - |
Affected
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| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 11.0 Search vendor "Debian" for product "Debian Linux" and version "11.0" | - |
Affected
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| Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 33 Search vendor "Fedoraproject" for product "Fedora" and version "33" | - |
Affected
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| Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 34 Search vendor "Fedoraproject" for product "Fedora" and version "34" | - |
Affected
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