MD5 signatures accepted within TLS 1.2 ServerKeyExchange in server signature — Mozilla

Security researcher Karthikeyan Bhargavan reported an issue in Network Security Services NSS where MD5 signatures in the server signature within the TLS 1.2 ServerKeyExchange message are still accepted. This is an issue since NSS has officially disallowed the accepting MD5 as a hash algorithm in...

USN-2830-1: OpenSSL vulnerabilities

Guy Leaver discovered that OpenSSL incorrectly handled a ServerKeyExchange for an anonymous DH ciphersuite with the value of p set to 0. A remote attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service. This issue only applied to Ubuntu 15.10...

FreeBSD : openssl -- multiple vulnerabilities (4c8d1d72-9b38-11e5-aece-d050996490d0)

OpenSSL project reports : - BNmodexp may produce incorrect results on x8664 CVE-2015-3193 - Certificate verify crash with missing PSS parameter CVE-2015-3194 - X509ATTRIBUTE memory leak CVE-2015-3195 - Race condition handling PSK identify hint CVE-2015-3196 - Anon DH ServerKeyExchange with 0 p...

OpenSSL 1.0.0 < 1.0.0t Multiple Vulnerabilities

The version of OpenSSL installed on the remote host is prior to 1.0.0t. It is, therefore, affected by multiple vulnerabilities as referenced in the 1.0.0t advisory. - ssl/s3clnt.c in OpenSSL 1.0.0 before 1.0.0t, 1.0.1 before 1.0.1p, and 1.0.2 before 1.0.2d, when used for a multi-threaded client,...

CVE-2015-3196

ssl/s3clnt.c in OpenSSL 1.0.0 before 1.0.0t, 1.0.1 before 1.0.1p, and 1.0.2 before 1.0.2d, when used for a multi-threaded client, writes the PSK identity hint to an incorrect data structure, which allows remote servers to cause a denial of service race condition and double free via a crafted...

Design/Logic Flaw

The ssl3getkeyexchange function in ssl/s3clnt.c in OpenSSL 1.0.2 before 1.0.2e allows remote servers to cause a denial of service segmentation fault via a zero p value in an anonymous Diffie-Hellman DH ServerKeyExchange message...

CVE-2015-1794

The ssl3getkeyexchange function in ssl/s3clnt.c in OpenSSL 1.0.2 before 1.0.2e allows remote servers to cause a denial of service segmentation fault via a zero p value in an anonymous Diffie-Hellman DH ServerKeyExchange message...

CVE-2015-1794

The ssl3getkeyexchange function in ssl/s3clnt.c in OpenSSL 1.0.2 before 1.0.2e allows remote servers to cause a denial of service segmentation fault via a zero p value in an anonymous Diffie-Hellman DH ServerKeyExchange message...

OpenSSL ServerKeyExchange Message Handling Remote Denial of Service Vulnerability

OpenSSL is an open source implementation of SSL for strong encryption of network communications. A security vulnerability exists in OpenSSL, where a remote attacker submitting a special anonymous DH encryption suite of ServerKeyExchange messages can crash the target service if the p-value is set ...

CVE-2015-3196

ssl/s3clnt.c in OpenSSL 1.0.0 before 1.0.0t, 1.0.1 before 1.0.1p, and 1.0.2 before 1.0.2d, when used for a multi-threaded client, writes the PSK identity hint to an incorrect data structure, which allows remote servers to cause a denial of service race condition and double free via a crafted...

Updated openssl packages fix security vulnerability

If a client receives a ServerKeyExchange for an anonymous DH ciphersuite with the value of p set to 0 then a seg fault can occur leading to a possible denial of service attack CVE-2015-1794. Loic Jonas Etienne of Qnective AG discovered that the signature verification routines will crash with a NU...

CVE-2015-1794

The ssl3getkeyexchange function in ssl/s3clnt.c in OpenSSL 1.0.2 before 1.0.2e allows remote servers to cause a denial of service segmentation fault via a zero p value in an anonymous Diffie-Hellman DH ServerKeyExchange message...

CVE-2015-3196

ssl/s3clnt.c in OpenSSL 1.0.0 before 1.0.0t, 1.0.1 before 1.0.1p, and 1.0.2 before 1.0.2d, when used for a multi-threaded client, writes the PSK identity hint to an incorrect data structure, which allows remote servers to cause a denial of service race condition and double free via a crafted...

openssl -- multiple vulnerabilities

OpenSSL project reports: BNmodexp may produce incorrect results on x8664 CVE-2015-3193 Certificate verify crash with missing PSS parameter CVE-2015-3194 X509ATTRIBUTE memory leak CVE-2015-3195 Race condition handling PSK identify hint CVE-2015-3196 Anon DH ServerKeyExchange with 0 p parameter...

SUSE SLED12 / SLES12 Security Update : gnutls (SUSE-SU-2015:1518-1)

gnutls was updated to fix several security vulnerabilities. - fix double free in certificate DN decoding GNUTLS-SA-2015-3bsc941794,CVE-2015-6251 - fix invalid read in octet string in bundled libtasn1 bsc929414,CVE-2015-3622 - fix ServerKeyExchange signature issue GNUTLS-SA-2015-2bsc929690 Note th...

SUSE-SU-2015:1518-1 Security update for gnutls

gnutls was updated to fix several security vulnerabilities. - fix double free in certificate DN decoding GNUTLS-SA-2015-3bsc941794,CVE-2015-6251 - fix invalid read in octet string in bundled libtasn1 bsc929414,CVE-2015-3622 - fix ServerKeyExchange signature issue GNUTLS-SA-2015-2bsc929690...

nss security, bug fix, and enhancement update

3.19.1-1 - Rebase nss to 3.19.1 - Pick up upstream fix for client auth. regression caused by 3.19.1 - Revert upstream change to minimum key sizes - Remove patches that rendered obsolote by the rebase - Update existing patches on account of the rebase 3.18.0-7 - Pick up upstream patch from...

Code injection

EMC RSA BSAFE Micro Edition Suite MES 4.0.x before 4.0.8 and 4.1.x before 4.1.3 and RSA BSAFE SSL-C 2.8.9 and earlier allow remote SSL servers to conduct ECDHE-to-ECDH downgrade attacks and trigger a loss of forward secrecy by omitting the ServerKeyExchange message, a similar issue to CVE-2014-35...

openSUSE Security Update : gnutls (openSUSE-2015-542)

fix for CVE-2015-3622 in bundled libtasn1 bsc929414 - invalid read in octet string - added gnutls-CVE-2015-3622.patch - fix for GNUTLS-SA-2015-2 bsc929690 - ServerKeyExchange signature issue - added gnutls-GNUTLS-SA-2015-2.patch %NASLMINLEVEL 70300 C Tenable Network Security, Inc. The descriptive...

Vulnerability in OpenSSL - Anon DH ServerKeyExchange with 0 p parameter

If a client receives a ServerKeyExchange for an anonymous DH ciphersuite with the value of p set to 0 then a seg fault can occur leading to a possible denial of service attack. Found by Guy Leaver Cisco...