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CVE-2016-2106 is an integer-overflow vulnerability in OpenSSL's EVP_EncryptUpdate() implementation. When processing very large input after an earlier EVP_EncryptUpdate() invocation left a partial cipher block buffered, a length calculation can wrap, bypassing the intended size check and causing heap memory corruption. EVP_DecryptUpdate() can reach the affected implementation on certain paths, and EVP_CipherUpdate() is an alias of EVP_EncryptUpdate(). The issue affects OpenSSL releases before 1.0.1t and 1.0.2h. OpenSSL's internal call sites were assessed as not susceptible; exposure primarily concerns applications that directly invoke the affected EVP APIs with attacker-controlled input.
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No public exploit code observed for this vulnerability.
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21 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
OpenSSL heap corruption vulnerability in EVP_EncryptUpdate/EVP_DecryptUpdate/EVP_CipherUpdate with very large untrusted input.
An OpenSSL flaw fixed by the Red Hat JBoss Core Services httpd 2.4.23 update.
An OpenSSL flaw fixed by the Red Hat JBoss Core Services httpd 2.4.23 update.
OpenSSL EVP_EncryptUpdate integer-overflow buffer overflow that can cause denial of service or possible arbitrary code execution.
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.