OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL v2/v3)and Transport Layer Security (TLS v1) protocols, as well as a full-strengthgeneral purpose cryptography library. Datagram TLS (DTLS) is a protocolbased on TLS that is capable of securing datagram transport (for example,UDP).Multiple denial of service flaws were discovered in OpenSSL's DTLSimplementation. A remote attacker could use these flaws to cause a DTLSserver to use excessive amounts of memory, or crash on an invalid memoryaccess or NULL pointer dereference. (CVE-2009-1377, CVE-2009-1378,CVE-2009-1379, CVE-2009-1386, CVE-2009-1387)Note: These flaws only affect applications that use DTLS. Red Hat does notship any DTLS client or server applications in Red Hat Enterprise Linux.An input validation flaw was found in the handling of the BMPString andUniversalString ASN1 string types in OpenSSL's ASN1_STRING_print_ex()function. An attacker could use this flaw to create a specially-craftedX.509 certificate that could cause applications using the affected functionto crash when printing certificate contents. (CVE-2009-0590)Note: The affected function is rarely used. No application shipped with RedHat Enterprise Linux calls this function, for example.These updated packages also fix the following bugs:As well, these updated packages add the following enhancements:OpenSSL users should upgrade to these updated packages, which resolve theseissues and add these enhancements.