Insufficient Entropy

The product uses an algorithm or scheme that produces insufficient entropy, leaving patterns or clusters of values that are more likely to occur than others.

CVEs (144)

CVE VENDORS PRODUCTS UPDATED PUBLISHED CVSS
CVE-2012-4687 1Postoaktraffic 1Awam Bluetooth Reader Apr 29, 2026 Dec 8, 2012 N/A· v4 N/A· v3 7.6 HIGH· v2 Post Oak AWAM Bluetooth Reader Traffic System does not use a sufficient source of entropy for private keys, which makes it easier for man-in-the-middle attackers to spoof a device by predicting a key value.
CVE-2008-1447 1Isc 1Bind Apr 23, 2026 Jul 8, 2008 N/A· v4 6.8 MEDIUM· v3 5.0 MEDIUM· v2 The DNS protocol, as implemented in (1) BIND 8 and 9 before 9.5.0-P1, 9.4.2-P1, and 9.3.5-P1; (2) Microsoft DNS in Windows 2000 SP4, XP SP2 and SP3, and Server 2003 SP1 and SP2; and other implementations allow remote att...Show more The DNS protocol, as implemented in (1) BIND 8 and 9 before 9.5.0-P1, 9.4.2-P1, and 9.3.5-P1; (2) Microsoft DNS in Windows 2000 SP4, XP SP2 and SP3, and Server 2003 SP1 and SP2; and other implementations allow remote attackers to spoof DNS traffic via a birthday attack that uses in-bailiwick referrals to conduct cache poisoning against recursive resolvers, related to insufficient randomness of DNS transaction IDs and source ports, aka "DNS Insufficient Socket Entropy Vulnerability" or "the Kaminsky bug."Show less
CVE-2008-2108 4Canonical DebianFedoraproject+1 more 4Debian Linux FedoraPhp+1 more Apr 23, 2026 May 7, 2008 N/A· v4 9.8 CRITICAL· v3 7.5 HIGH· v2 The GENERATE_SEED macro in PHP 4.x before 4.4.8 and 5.x before 5.2.5, when running on 64-bit systems, performs a multiplication that generates a portion of zero bits during conversion due to insufficient precision, which...Show more The GENERATE_SEED macro in PHP 4.x before 4.4.8 and 5.x before 5.2.5, when running on 64-bit systems, performs a multiplication that generates a portion of zero bits during conversion due to insufficient precision, which produces 24 bits of entropy and simplifies brute force attacks against protection mechanisms that use the rand and mt_rand functions.Show less
CVE-2001-0950 1Valicert 1Enterprise Validation Authority Apr 16, 2026 Dec 4, 2001 N/A· v4 7.5 HIGH· v3 7.5 HIGH· v2 ValiCert Enterprise Validation Authority (EVA) Administration Server 3.3 through 4.2.1 uses insufficiently random data to (1) generate session tokens for HSMs using the C rand function, or (2) generate certificates or ke...Show more ValiCert Enterprise Validation Authority (EVA) Administration Server 3.3 through 4.2.1 uses insufficiently random data to (1) generate session tokens for HSMs using the C rand function, or (2) generate certificates or keys using /dev/urandom instead of another source which blocks when the entropy pool is low, which could make it easier for local or remote attackers to steal tokens or certificates via brute force guessing.Show less

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