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CVE-2023-3446 is an uncontrolled resource-consumption vulnerability in OpenSSL Diffie-Hellman parameter validation. DH_check() rejects modulus p values exceeding the normal 10,000-bit limit, but continues performing other expensive checks using the oversized supplied modulus after identifying it as too large. This can cause excessive processing time when validating attacker-controlled DH keys or parameters. The issue also affects DH_check_ex() and EVP_PKEY_param_check(), which invoke the affected validation logic, and the dhparam and pkeyparam command-line applications when used with the -check option. OpenSSL SSL/TLS is not affected. OpenSSL 3.0 and 3.1 FIPS providers are not affected.
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6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An OpenSSL vulnerability causing excessive time in DH_check() with an oversized modulus.
Unknown
A vulnerability addressed by the updated Red Hat Developer Hub container image; no technical details are provided in this advisory text.
A Linux kernel CVE addressed by the advisory; no further description is provided.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.