Risk | Medium |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2017-3733 |
CWE-ID | CWE-20 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
OpenSSL Server applications / Encryption software |
Vendor | OpenSSL Software Foundation |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
EUVDB-ID: #VU5839
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2017-3733
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to cause denial of service.
The vulnerability exists due to improper input validation during a renegotiation handshake, if the Encrypt-Then-Mac extension is negotiated where it was not in the original handshake. A remote attacker can send a specially crafted data to vulnerable application and case denial of service conditions.
Successful exploitation of the vulnerability may result in denial of service (DoS) attack.
MitigationUpdate to version 1.1.0e.
OpenSSL: 1.1.0 - 1.1.0d
External linkshttp://www.openssl.org/news/secadv/20170216.txt
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.