GnuTLS 2.6.x - libgnutls lib/pk-libgcrypt.c Malformed DSA Key Handling Remote Denial of Service

// source: https://www.securityfocus.com/bid/34783/info GnuTLS is prone to multiple remote vulnerabilities: - A remote code-execution vulnerability - A denial-of-service vulnerability - A signature-generation vulnerability - A signature-verification vulnerability An attacker can exploit these...

CVE-2008-4989

Summary: CVE-2008-4989 affects the GnuTLS library. The vulnerability lies in _gnutls_x509_verify_certificate in libgnutls/lib/x509/verify.c, where the library can trust a chain whose last certificate is an arbitrary self-signed trusted cert. This allows a man-in-the-middle to spoof a certificate ...

CVE-2008-4989

The gnutlsx509verifycertificate function in lib/x509/verify.c in libgnutls in GnuTLS before 2.6.1 trusts certificate chains in which the last certificate is an arbitrary trusted, self-signed certificate, which allows man-in-the-middle attackers to insert a spoofed certificate for any Distinguishe...

CVE-2008-2377

Use-after-free vulnerability in the gnutlshandshakehashbuffersclear function in lib/gnutlshandshake.c in libgnutls in GnuTLS 2.3.5 through 2.4.0 allows remote attackers to cause a denial of service crash or possibly execute arbitrary code via TLS transmission of data that is improperly used when...

CVE-2008-2377

CVE-2008-2377 is a use-after-free in GNU TLS: the _gnutls_handshake_hash_buffers_clear function in libgnutls (GnuTLS 2.3.5–2.4.0) can allow a remote attacker to crash the service or potentially run arbitrary code during TLS handshakes, due to improper handling of a deallocated libgcrypt handle. A...

CVE-2008-1950

Integer signedness error in the gnutlsciphertext2compressed function in lib/gnutlscipher.c in libgnutls in GnuTLS before 2.2.4 allows remote attackers to cause a denial of service buffer over-read and crash via a certain integer value in the Random field in an encrypted Client Hello message withi...

CVE-2008-1950

Integer signedness error in the gnutlsciphertext2compressed function in lib/gnutlscipher.c in libgnutls in GnuTLS before 2.2.4 allows remote attackers to cause a denial of service buffer over-read and crash via a certain integer value in the Random field in an encrypted Client Hello message withi...

Design/Logic Flaw

The gnutlsrecvclientkxmessage function in lib/gnutlskx.c in libgnutls in gnutls-serv in GnuTLS before 2.2.4 continues to process Client Hello messages within a TLS message after one has already been processed, which allows remote attackers to cause a denial of service NULL dereference and crash v...

CVE-2008-1949

The gnutlsrecvclientkxmessage function in lib/gnutlskx.c in libgnutls in gnutls-serv in GnuTLS before 2.2.4 continues to process Client Hello messages within a TLS message after one has already been processed, which allows remote attackers to cause a denial of service NULL dereference and crash v...

CVE-2008-1950

Integer signedness error in the gnutlsciphertext2compressed function in lib/gnutlscipher.c in libgnutls in GnuTLS before 2.2.4 allows remote attackers to cause a denial of service buffer over-read and crash via a certain integer value in the Random field in an encrypted Client Hello message withi...

CVE-2008-1948

The gnutlsservernamerecvparams function in lib/extservername.c in libgnutls in gnutls-serv in GnuTLS before 2.2.4 does not properly calculate the number of Server Names in a TLS 1.0 Client Hello message during extension handling, which allows remote attackers to cause a denial of service crash or...

CVE-2008-1949

CVE-2008-1949 affects the GnuTLS stack (libgnutls in gnutls-serv). The flaw is in _gnutls_recv_client_kx_message, which can erroneously continue processing Client Hello messages within a TLS record after one has been handled, causing a NULL dereference and a crash (denial of service). Affected co...

GNUTLS-SA-2008-1-3 GnuTLS memory overread flaw

Integer signedness error in the gnutlsciphertext2compressed function in lib/gnutlscipher.c in libgnutls in GnuTLS before 2.2.4 allows remote attackers to cause a denial of service buffer over-read and crash via a certain integer value in the Random field in an encrypted Client Hello message withi...