New Infinite Loop Bug in OpenSSL Could Let Attackers Crash Remote Servers



The maintainers of OpenSSL have shipped patches to resolve a high-severity security flaw in its software library that could lead to a denial-of-service (DoS) condition when parsing certificates.

Tracked as CVE-2022-0778 (CVSS score: 7.5), the issue stems from parsing a malformed certificate with invalid explicit elliptic-curve parameters, resulting in what’s called an “infinite loop.” The flaw resides in a function called BN_mod_sqrt() that’s used to compute the modular square root.

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