openssl: Divide-and-conquer session key recovery in SSLv2

It was discovered that the SSLv2 servers using OpenSSL accepted SSLv2 connection handshakes that indicated non-zero clear key length for non-export cipher suites. An attacker could use this flaw to decrypt recorded SSLv2 sessions with the server by using it as a decryption oracle...

openssl: Divide-and-conquer session key recovery in SSLv2

It was discovered that the SSLv2 servers using OpenSSL accepted SSLv2 connection handshakes that indicated non-zero clear key length for non-export cipher suites. An attacker could use this flaw to decrypt recorded SSLv2 sessions with the server by using it as a decryption oracle...

UBUNTU-CVE-2016-0702

The MODEXPCTIMECOPYFROMPREBUF function in crypto/bn/bnexp.c in OpenSSL 1.0.1 before 1.0.1s and 1.0.2 before 1.0.2g does not properly consider cache-bank access times during modular exponentiation, which makes it easier for local users to discover RSA keys by running a crafted application on the...

Vulnerability in OpenSSL - Divide-and-conquer session key recovery in SSLv2

This issue only affected versions of OpenSSL prior to March 19th 2015 at which time the code was refactored to address vulnerability CVE-2015-0293. s2srvr.c did not enforce that clear-key-length is 0 for non-export ciphers. If clear-key bytes are present for these ciphers, they displace...

PT-2016-1335 · Openssl +9 · Openssl +12

Name of the Vulnerable Software and Affected Versions: OpenSSL versions 1.0.1 through 1.0.1s OpenSSL versions 1.0.2 through 1.0.2g Description: The issue is related to the fmtstr function in crypto/bio/b print.c, which improperly calculates string lengths. This allows remote attackers to cause a...

OpenSSL CVE-2 0 1 6-0 7 0 1 Private Key Recovery attack vulnerability analysis-vulnerability warning-the black bar safety net

by: au2o3t @3 6 0 Cloud Security Team 0x01 Foreword 2 0 1 6 1 2 8, OpenSSL official published number for the CVE-2 0 1 6-0 7 0 1 vulnerabilities. The vulnerability occurs in the OpenSSL 1.0.2 versionOpenSSL 1.0.2 f and later versions not affected, when using the DH algorithm to a different client...

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...

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...

DEBIAN-CVE-2015-7744

wolfSSL formerly CyaSSL before 3.6.8 does not properly handle faults associated with the Chinese Remainder Theorem CRT process when allowing ephemeral key exchange without low memory optimizations on a server, which makes it easier for remote attackers to obtain private RSA keys by capturing TLS...

UBUNTU-CVE-2015-7940

The Bouncy Castle Java library before 1.51 does not validate a point is withing the elliptic curve, which makes it easier for remote attackers to obtain private keys via a series of crafted elliptic curve Diffie Hellman ECDH key exchanges, aka an "invalid curve attack."...

ESPCMS的最新版后台登入绕过

简要描述： 8.25 V6.4.15.08.25 捡漏 详细说明： 在加密算法那 ，一般情况下我们是不能再还原出key了。 他加了这么一段代码 function eccode$string, $operation = 'DECODE', $key = '@LFK24s224%@safS3s%1f%', $mcrype = true $result = null; if $operation == 'ENCODE' if extensionloaded'mcrypt' && $mcrype $result = $this-encryptCookie$string, $key; else...

crypto++: private key recovery

Evgeny Sidorov discovered that it is possible to recover the private key when using Rabin-Williams signatures due to a bad interaction with the blinding value used to mask private key operations. The bad interaction had to do with the random value not meeting certain Jacobi requirements, which...

wss4j: Apache WSS4J is vulnerable to Bleichenbacher's attack (incomplete fix for CVE-2011-2487)

It was found that a prior countermeasure in Apache WSS4J for Bleichenbacher's attack on XML Encryption CVE-2011-2487 threw an exception that permitted an attacker to determine the failure of the attempted attack, thereby leaving WSS4J vulnerable to the attack. The original flaw allowed a remote...

wss4j: Apache WSS4J is vulnerable to Bleichenbacher's attack (incomplete fix for CVE-2011-2487)

It was found that a prior countermeasure in Apache WSS4J for Bleichenbacher's attack on XML Encryption CVE-2011-2487 threw an exception that permitted an attacker to determine the failure of the attempted attack, thereby leaving WSS4J vulnerable to the attack. The original flaw allowed a remote...

UBUNTU-CVE-2015-3167

contrib/pgcrypto in PostgreSQL before 9.0.20, 9.1.x before 9.1.16, 9.2.x before 9.2.11, 9.3.x before 9.3.7, and 9.4.x before 9.4.2 uses different error responses when an incorrect key is used, which makes it easier for attackers to obtain the key via a brute force attack...

wss4j: Apache WSS4J is vulnerable to Bleichenbacher's attack (incomplete fix for CVE-2011-2487)

It was found that a prior countermeasure in Apache WSS4J for Bleichenbacher's attack on XML Encryption CVE-2011-2487 threw an exception that permitted an attacker to determine the failure of the attempted attack, thereby leaving WSS4J vulnerable to the attack. The original flaw allowed a remote...

USN-2554-1 gnupg, gnupg2 vulnerabilities

Daniel Genkin, Lev Pachmanov, Itamar Pipman, and Eran Tromer discovered that GnuPG was susceptible to an attack via physical side channels. A local attacker could use this attack to possibly recover private keys. CVE-2014-3591 Daniel Genkin, Adi Shamir, and Eran Tromer discovered that GnuPG was...

openssl: Divide-and-conquer session key recovery in SSLv2

It was discovered that the SSLv2 servers using OpenSSL accepted SSLv2 connection handshakes that indicated non-zero clear key length for non-export cipher suites. An attacker could use this flaw to decrypt recorded SSLv2 sessions with the server by using it as a decryption oracle...

JDK: Java CMS keystore provider potentially allows brute-force private key recovery

IBM Java Runtime Environment JRE 7 R1 before SR1 FP1 7.1.1.1, 7 before SR7 FP1 7.0.7.1, 6 R1 before SR8 FP1 6.1.8.1, 6 before SR16 FP1 6.0.16.1, and before 5.0 SR16 FP7 5.0.16.7 allows attackers to obtain the private key from a Certificate Management System CMS keystore via a brute force attack...

Barracuda Load Balancer ADC Key Recovery / Password Reset Vulnerabilities

Barracuda Load Balancer ADC with firmware version 5.0.0.015 suffers from multiple security issues. There is an ability to recover the file system encryption keys via simil cold-boot attack, an off-line super user password reset via physical attack, hard-coded credential and hard-coded ssh key...