The RFC 5114 saga

Back in January I posed a question "to the Internet": What the heck is RFC 5114? It looks like a lot happened since then around it. I would like to use this post to recollect some of the stuff around RFC5114 . Chapter 0: October 2007 RFC5114 draft was submitted to the IETF . Chapter I: January 20...

Fedora 23 : openssl-1.0.2f-1.fc23 (2016-527018d2ff)

New upstream version fixing one high serverity and one low severity security issue. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without...

Security fix for the ALT Linux 7 package openssl10 version 1.0.1s-alt0.M70P.1

1.0.1s-alt0.M70P.1 built March 2, 2016 Gleb Fotengauer-Malinovskiy in task 160363 March 1, 2016 Gleb Fotengauer-Malinovskiy - Updated to v1.0.1s fixes CVE-2016-0701 CVE-2016-0702 CVE-2016-0705 CVE-2016-0797 CVE-2016-0798 CVE-2016-0799 CVE-2016-0800...

Security fix for the ALT Linux 8 package openssl10 version 1.0.2g-alt1

March 1, 2016 Gleb Fotengauer-Malinovskiy 1.0.2g-alt1 - Updated to 1.0.2g fixes CVE-2016-0701 CVE-2016-0702 CVE-2016-0705 CVE-2016-0797 CVE-2016-0798 CVE-2016-0799 CVE-2016-0800. - Added default ciphers to system profile...

Security fix for the ALT Linux 9 package openssl10 version 1.0.2g-alt1

March 1, 2016 Gleb Fotengauer-Malinovskiy 1.0.2g-alt1 - Updated to 1.0.2g fixes CVE-2016-0701 CVE-2016-0702 CVE-2016-0705 CVE-2016-0797 CVE-2016-0798 CVE-2016-0799 CVE-2016-0800. - Added default ciphers to system profile...

CVE-2016-0701

The DHcheckpubkey function in crypto/dh/dhcheck.c in OpenSSL 1.0.2 before 1.0.2f does not ensure that prime numbers are appropriate for Diffie-Hellman DH key exchange, which makes it easier for remote attackers to discover a private DH exponent by making multiple handshakes with a peer that chose...

CVE-2016-0701

OpenSSL CVE-2016-0701 centers on an overflow in the AVX2 Montgomery multiplication (rsaz_1024_mul_avx2) used for 1024‑bit exponentiation, enabling potential private-key exposure under TLS when DH parameters are misused. Affected platforms are OpenSSL builds on x86_64 with AVX2/BMI1, BMI2 and ADX ...

OpenSSL 1.0.2 < 1.0.2f Multiple Vulnerabilities

The version of OpenSSL installed on the remote host is prior to 1.0.2f. It is, therefore, affected by multiple vulnerabilities as referenced in the 1.0.2f advisory. - The DHcheckpubkey function in crypto/dh/dhcheck.c in OpenSSL 1.0.2 before 1.0.2f does not ensure that prime numbers are appropriat...

openssl: Security update (2 CVEs)

The openssl package has been rebuilt and was uploaded to the Barrier Breaker 14.07 repository due to multiple security issues. VERSION 1.0.2e-1 = 1.0.2f-1 CHANGELOG Fri, 29 Jan 2016 13:25:24 +0000 b763ba2 Openssl: update to 1.0.2f fixes CVE-2016-0701, CVE-2015-3197 CHANGES...

OpenSSL Key Recovery Attack on DH small subgroups (CVE-2016-0701)

Usual Mandatory Disclaimer: IANAC I am not a cryptographer so I might likely end up writing a bunch of mistakes in this blog post... tl;dr The OpenSSL 1.0.2 releases suffer from a Key Recovery Attack on DH small subgroups. This issue got assigned CVE-2016-0701 with a severity of High and OpenSSL...

FreeBSD : openssl -- multiple vulnerabilities (3679fd10-c5d1-11e5-b85f-0018fe623f2b)

OpenSSL project reports : - Historically OpenSSL only ever generated DH parameters based on 'safe' primes. More recently in version 1.0.2 support was provided for generating X9.42 style parameter files such as those required for RFC 5114 support. The primes used in such files may not be 'safe'...

openssl: man-in-the-middle

CVE-2015-3197 man-in-the-middle A flaw was found in the way malicious SSL/TLS clients could negotiate SSLv2 ciphers that have been disabled on the server. This could result in weak SSLv2 ciphers being used for SSL/TLS connections, making them vulnerable to man-in-the-middle attacks. -...

lib32-openssl: man-in-the-middle

CVE-2015-3197 man-in-the-middle A flaw was found in the way malicious SSL/TLS clients could negotiate SSLv2 ciphers that have been disabled on the server. This could result in weak SSLv2 ciphers being used for SSL/TLS connections, making them vulnerable to man-in-the-middle attacks. -...

openssl: Security update (2 CVEs)

The openssl package has been rebuilt and was uploaded to the Chaos Calmer 15.05 repository due to multiple security issues. VERSION 1.0.2e-1 = 1.0.2f-1 CHANGELOG Thu, 28 Jan 2016 18:26:18 +0000 87e9837 Update to 1.0.2f fixes CVE-2016-0701, CVE-2015-3197 CHANGES package/libs/openssl/Makefile | 4...

Internet Bug Bounty: OpenSSL Key Recovery Attack on DH small subgroups (CVE-2016-0701)

Full write up: http://intothesymmetry.blogspot.ch/2016/01/openssl-key-recovery-attack-on-dh-small.html DH small subgroups CVE-2016-0701 ================================== Severity: High Historically OpenSSL usually only ever generated DH parameters based on "safe" primes. More recently in version...

Security fix for the ALT Linux 9 package openssl10 version 1.0.2f-alt1

Jan. 28, 2016 Gleb Fotengauer-Malinovskiy 1.0.2f-alt1 - Updated to 1.0.2f fixes CVE-2015-3197 CVE-2016-0701...

Security fix for the ALT Linux 7 package openssl10 version 1.0.1r-alt0.M70P.1

1.0.1r-alt0.M70P.1 built Jan. 28, 2016 Gleb Fotengauer-Malinovskiy in task 156755 Jan. 28, 2016 Gleb Fotengauer-Malinovskiy - Updated to v1.0.1r CVE-2015-3197 CVE-2016-0701...

SOL64009378 - OpenSSL vulnerability CVE-2016-0701

Vulnerability Recommended Actions None Supplemental Information SOL9970: Subscribing to email notifications regarding F5 products SOL9957: Creating a custom RSS feed to view new and updated documents SOL4602: Overview of the F5 security vulnerability response policy SOL4918: Overview of the F5...

Security fix for the ALT Linux 9 package openssl1.1 version 1.0.2f-alt1

Jan. 28, 2016 Gleb Fotengauer-Malinovskiy 1.0.2f-alt1 - Updated to 1.0.2f fixes CVE-2015-3197 CVE-2016-0701...

CVE-2015-0701

Cisco UCS Central Software versions prior to 1.3(1a) are affected by a command-execution vulnerability exposed via the web interface. The root cause is improper input validation in the web framework, allowing an unauthenticated, remote attacker to craft an HTTP request that executes arbitrary OS ...