Risk | Medium |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2021-43797 |
CWE-ID | CWE-444 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
Netty Universal components / Libraries / Libraries used by multiple products |
Vendor | Netty project |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
EUVDB-ID: #VU61810
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-2021-43797
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 when processing control chars present at the beginning / end of the header name. 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 versionsNetty: 4.1.0 - 4.1.70
External linkshttp://github.com/netty/netty/security/advisories/GHSA-wx5j-54mm-rqqq
http://github.com/netty/netty/commit/07aa6b5938a8b6ed7a6586e066400e2643897323
http://security.netapp.com/advisory/ntap-20220107-0003/
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.