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CVE-2002-0656 is a remotely exploitable buffer overflow in OpenSSL 0.9.6d and earlier and pre-release OpenSSL 0.9.7-beta2 and earlier. Insufficient bounds checking during SSL handshake processing permits an oversized SSLv2 CLIENT-MASTER-KEY value or an oversized SSLv3 session ID to overflow a buffer. The SSLv2 condition is reachable by a malicious client against a vulnerable server; the SSLv3 condition is reachable by a malicious server during a vulnerable client's handshake.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
OpenSSL SSLv2/SSLv3 buffer overflow enabling arbitrary code execution.
A buffer overflow in OpenSSL that permits remote code execution via oversized SSL2 client master keys or SSL3 session IDs.
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.