OpenSSL v1.0.0.m Release Notes

Release Date: 2014-08-06 // almost 8 years ago
    • OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject to a denial of service attack. A malicious server can crash the client with a null pointer dereference (read) by specifying an anonymous (EC)DH ciphersuite and sending carefully crafted handshake messages.

    Thanks to Felix Gröbert (Google) for discovering and researching this issue. [CVE-2014-3510][]

    Emilia Käsper

    • By sending carefully crafted DTLS packets an attacker could cause openssl to leak memory. This can be exploited through a Denial of Service attack. Thanks to Adam Langley for discovering and researching this issue. [CVE-2014-3507][]

    Adam Langley

    • An attacker can force openssl to consume large amounts of memory whilst processing DTLS handshake messages. This can be exploited through a Denial of Service attack. Thanks to Adam Langley for discovering and researching this issue. [CVE-2014-3506][]

    Adam Langley

    • An attacker can force an error condition which causes openssl to crash whilst processing DTLS packets due to memory being freed twice. This can be exploited through a Denial of Service attack. Thanks to Adam Langley and Wan-Teh Chang for discovering and researching this issue. [CVE-2014-3505][]

    Adam Langley

    • If a multithreaded client connects to a malicious server using a resumed session and the server sends an ec point format extension it could write up to 255 bytes to freed memory.

    Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this issue. [CVE-2014-3509][]

    Gabor Tyukasz

    • A flaw in OBJ_obj2txt may cause pretty printing functions such as X509_name_oneline, X509_name_print_ex et al. to leak some information from the stack. Applications may be affected if they echo pretty printing output to the attacker.

    Thanks to Ivan Fratric (Google) for discovering this issue. [CVE-2014-3508][]

    Emilia Käsper, and Steve Henson

    • Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.) for corner cases. (Certain input points at infinity could lead to bogus results, with non-infinity inputs mapped to infinity too.)

    Bodo Moeller