Vulnerability identifier: #VU45989
Vulnerability 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:
CWE-ID:
CWE-835
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
wolfSSL
Universal components / Libraries /
Libraries used by multiple products
Vendor: wolfSSL
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The
vulnerability exists due to improper change_cipher_spec (CCS) message
processing logic for TLS 1.3. A remote attacker can send
ChangeCipherSpec messages in a crafted way involving more than one in a
row and perform a denial of service (DoS) attack.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
wolfSSL: 4.0 - 4.4.0
External links
http://github.com/wolfSSL/wolfssl/pull/2927
http://github.com/wolfSSL/wolfssl/releases/tag/v4.5.0-stable
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.