Multiple vulnerabilities in HAProxy
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2023-40225 CVE-2023-45539 |
| CWE-ID | CWE-444 CWE-20 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
HAProxy Server applications / IDS/IPS systems, Firewalls and proxy servers |
| Vendor | HAProxy |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Inconsistent interpretation of HTTP requests
EUVDB-ID: #VU79767
Risk: Medium
CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-40225
CWE-ID:
CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform HTTP request smuggling attacks.
The vulnerability exists due to improper validation of HTTP requests. A remote attacker can send a specially crafted HTTP request with empty Content-Length headers to the server and smuggle arbitrary HTTP headers.
Successful exploitation of vulnerability may allow an attacker to poison HTTP cache and perform phishing attacks.
MitigationInstall updates from vendor's website.
Vulnerable software versionsHAProxy: 2.0.0 - 2.8.1
External linkshttp://www.haproxy.org/download/2.8/src/CHANGELOG
http://www.haproxy.org/download/2.6/src/CHANGELOG
http://cwe.mitre.org/data/definitions/436.html
http://github.com/haproxy/haproxy/issues/2237
http://www.haproxy.org/download/2.7/src/CHANGELOG
http://github.com/haproxy/haproxy/commit/6492f1f29d738457ea9f382aca54537f35f9d856
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Input validation error
EUVDB-ID: #VU83902
Risk: Medium
CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-45539
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due to insufficient validation of user-supplied input when processing the "#" character in the URI. A remote attacker can pass specially crafted URI to the application and view otherwise restricted file or potentially manipulate data.
Install updates from vendor's website.
Vulnerable software versionsHAProxy: 2.8.0 - 2.8.1
External linkshttp://lists.w3.org/Archives/Public/ietf-http-wg/2023JulSep/0070.html
http://git.haproxy.org/?p=haproxy.git%3Ba=commit%3Bh=2eab6d354322932cfec2ed54de261e4347eca9a6
http://www.mail-archive.com/haproxy%40formilux.org/msg43861.html
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
