CentOS 6 / 7 : libssh2 (CESA-2016:0428)

Updated libssh2 packages that fix one security issue are now available for Red Hat Enterprise Linux 6 and 7. Red Hat Product Security has rated this update as having Moderate security impact. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is availab...

OracleVM 3.3 / 3.4 : libssh2 (OVMSA-2016-0035)

The remote OracleVM system is missing necessary patches to address critical security updates : - use secrects of the appropriate length in Diffie-Hellman CVE-2016-0787 - fix basic functionality of libssh2 in FIPS mode 968575 %NASLMINLEVEL 70300 C Tenable Network Security, Inc. The package checks ...

libssh2 security update

CentOS Errata and Security Advisory CESA-2016:0428 Updated libssh2 packages that fix one security issue are now available for Red Hat Enterprise Linux 6 and 7. Red Hat Product Security has rated this update as having Moderate security impact. A Common Vulnerability Scoring System CVSS base score,...

libssh2: bits/bytes confusion resulting in truncated Diffie-Hellman secret length

A type confusion issue was found in the way libssh2 generated ephemeral secrets for the diffie-hellman-group1 and diffie-hellman-group14 key exchange methods. This would cause an SSHv2 Diffie-Hellman handshake to use significantly less secure random parameters...

Moderate: Red Hat Security Advisory: libssh2 security update

Updated libssh2 packages that fix one security issue are now available for Red Hat Enterprise Linux 6 and 7. Red Hat Product Security has rated this update as having Moderate security impact. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is availab...

libssh2 security update

1.4.2-2.el67.1 - use secrects of the appropriate length in Diffie-Hellman CVE-2016-0787 1.4.2-2 - fix basic functionality of libssh2 in FIPS mode 968575...

proftpd -- vulnerability in mod_tls

MITRE reports: The modtls module in ProFTPD before 1.3.5b and 1.3.6 before 1.3.6rc2 does not properly handle the TLSDHParamFile directive, which might cause a weaker than intended Diffie-Hellman DH key to be used and consequently allow attackers to have unspecified impact via unknown vectors...

FreeBSD : libssh -- weak Diffie-Hellman secret generation (6b3591ea-e2d2-11e5-a6be-5453ed2e2b49)

Andreas Schneider reports : libssh versions 0.1 and above have a bits/bytes confusion bug and generate an abnormally short ephemeral secret for the diffie-hellman-group1 and diffie-hellman-group14 key exchange methods. The resulting secret is 128 bits long, instead of the recommended sizes of 102...

SUSE SLED11 Security Update : libssh (SUSE-SU-2016:0622-1)

This update for libssh fixes the following issues : - CVE-2016-0739: Fix Weakness in diffie-hellman secret key generation. bsc965875 Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically...

Fedora 23 : libssh2-1.6.0-4.fc23 (2016-215a2219b1)

During the SSHv2 handshake when libssh2 is to get a suitable value for 'group order' in the Diffle Hellman negotiation, it would pass in number of bytes to a function that expected number of bits. This would result in the library generating numbers using only an 8th the number of random bits than...

SUSE SLED12 Security Update : libssh (SUSE-SU-2016:0625-1)

This update for libssh fixes the following issues : - CVE-2016-0739: Fix Weakness in diffie-hellman secret key generation. bsc965875 Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically...

Vulnerabilities in OpenSSL affect AIX

IBM SECURITY ADVISORY First Issued: Wed Mar 2 08:43:07 CST 2016 The most recent version of this document is available here: http://aix.software.ibm.com/aix/efixes/security/openssladvisory17.asc https://aix.software.ibm.com/aix/efixes/security/openssladvisory17.asc...

Turing Award — Inventors of Modern Cryptography Win $1 Million Cash Prize

And the Winners of this year's Turing Award are: Whitfield Diffie and Martin E. Hellman. The former chief security officer at Sun Microsystems Whitfield Diffie and the professor at Stanford University Martin E. Hellman won the 2015 ACM Turing Award, which is frequently described as the "Nobel Pri...

lib32-libssh2: man-in-the-middle

There is a bits/bytes confusion bug resulting in generation of a significantly short ephemeral secret for the diffie-hellman-group1 and diffie-hellman-group14 key exchange methods. The resulting secret is 128 bits long, instead of the recommended sizes of 1024 and 2048 bits respectively. There ar...

libssh2: man-in-the-middle

There is a bits/bytes confusion bug resulting in generation of a significantly short ephemeral secret for the diffie-hellman-group1 and diffie-hellman-group14 key exchange methods. The resulting secret is 128 bits long, instead of the recommended sizes of 1024 and 2048 bits respectively. There ar...

Updated libssh packages fix CVE-2016-0739

Updated libssh packages fix security vulnerability: libssh versions 0.1 and above have a bits/bytes confusion bug and generate an abnormally short ephemeral secret for the diffie-hellman-group1 and diffie-hellman-group14 key exchange methods. The resulting secret is 128 bits long, instead of the...

Debian DSA-3488-1 : libssh - security update

Aris Adamantiadis discovered that libssh, a tiny C SSH library, incorrectly generated a short ephemeral secret for the diffie-hellman-group1 and diffie-hellman-group14 key exchange methods. The resulting secret is 128 bits long, instead of the recommended sizes of 1024 and 2048 bits respectively...

Debian DLA-426-1 : libssh2 security update

Andreas Schneider reported that libssh2, an SSH2 protocol implementation used by many applications, did not generate sufficiently long Diffie-Hellman secrets. This vulnerability could be exploited by an eavesdropper to decrypt and to intercept SSH sessions. For the oldoldstable distribution...

Debian DLA-425-1 : libssh security update

Aris Adamantiadis of the libssh team discovered that libssh, an SSH2 protocol implementation used by many applications, did not generate sufficiently long Diffie-Hellman secrets. This vulnerability could be exploited by an eavesdropper to decrypt and to intercept SSH sessions. For the oldoldstabl...

Ubuntu 14.04 LTS : libssh vulnerabilities (USN-2912-1)

The remote Ubuntu 14.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-2912-1 advisory. Mariusz Ziulek discovered that libssh incorrectly handled certain packets. A remote attacker could possibly use this issue to cause libssh to crash,...