The vulnerability of the memcmp() function in OpenVPN software allows a hacker to gain unauthorized access to protected information.

The vulnerability of the memcmp function in OpenVPN software is related to the use of a cryptographic algorithm that has vulnerabilities when processing HMAC requests. Exploiting this vulnerability can allow an unauthorized attacker to gain unauthorized access to protected information...

l8w8jwt Security Breach

l8w8jwt is an open source, minimal, OpenSSL-free and ultra-lightweight JWT library written in C by Glitched Polygons GmbH. A security vulnerability exists in version 2.2.1 of l8w8jwt, which stems from the use of memcmp to authenticate, resulting in an authentication bypass vulnerability...

SUSE CVE-2018-0733

Because of an implementation bug the PA-RISC CRYPTOmemcmp function is effectively reduced to only comparing the least significant bit of each byte. This allows an attacker to forge messages that would be considered as authenticated in an amount of tries lower than that guaranteed by the security...