Risk | Medium |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2021-41267 |
CWE-ID | CWE-444 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software |
http-kernel Web applications / Modules and components for CMS |
Vendor | Symfony |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
EUVDB-ID: #VU58370
Risk: Medium
CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2021-41267
CWE-ID:
CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to preform HTTP request smuggling attacks.
The vulnerability exists due to improper validation of HTTP requests. A remote attacker can send a specially crafted HTTP request 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 versionshttp-kernel: 5.2.0 BETA1 - 5.3.11
CPE2.3https://github.com/symfony/symfony/security/advisories/GHSA-q3j3-w37x-hq2q
https://github.com/symfony/symfony/releases/tag/v5.3.12
https://github.com/symfony/symfony/commit/95dcf51682029e89450aee86267e3d553aa7c487
https://github.com/symfony/symfony/pull/44243
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.