CVE-2020-28018

POC CVE-2020-28018 Introduction The Qualys team has discovered and published 21 critical vulnerabilities in the Exim4 mail server. https://blog.qualys.com/vulnerabilities-research/2021/05/04/21nails-multiple-vulnerabilities-in-exim-mail-server The following link provides detailed technical...

PT-2026-84067

libgit2 is a portable C implementation of the Git core methods provided as a linkable library with a solid API, allowing to build Git functionality into your application. Prior to 1.8.6 and 1.9.5, verify server cert in src/libgit2/streams/openssl.c uses an inverted !!memcmp result in the GEN IPAD...

CVE-2026-53583: Improper Certificate Validation

libgit2 is a portable C implementation of the Git core methods provided as a linkable library with a solid API, allowing to build Git functionality into your application. Prior to 1.8.6 and 1.9.5, verifyservercert in src/libgit2/streams/openssl.c uses an inverted !!memcmp result in the GENIPADD...

PT-2026-76125

libssh2 through 1.11.1, fixed in commit a2ed82d, contains a pre-authentication integer underflow vulnerability in the ssh2 cipher crypt function in src/openssl.c that allows a malicious SSH server to crash any connecting client by negotiating AES-GCM ciphers during handshake. Attackers can exploi...

PT-2019-5436

Name of the Vulnerable Software and Affected Versions LibVNCServer versions prior to 0.9.13 Description An issue in libvncclient/tls openssl.c of LibVNCServer is related to pointer dereference errors, which can lead to a denial of service. A remote attacker may exploit this issue to cause a servi...

Design/Logic Flaw

The ssl-proxy-openssl.c function in Dovecot before 2.2.17, when SSLv3 is disabled, allow remote attackers to cause a denial of service login process crash via vectors related to handshake failures...

CVE-2015-3420

The ssl-proxy-openssl.c function in Dovecot before 2.2.17, when SSLv3 is disabled, allow remote attackers to cause a denial of service login process crash via vectors related to handshake failures...

CVE-2015-3420: Improper Certificate Validation

The ssl-proxy-openssl.c function in Dovecot before 2.2.17, when SSLv3 is disabled, allow remote attackers to cause a denial of service login process crash via vectors related to handshake failures...

CVE-2017-11144

In PHP before 5.6.31, 7.x before 7.0.21, and 7.1.x before 7.1.7, the openssl extension PEM sealing code did not check the return value of the OpenSSL sealing function, which could lead to a crash of the PHP interpreter, related to an interpretation conflict for a negative number in...

CVE-2017-11144: Improper Check for Unusual or Exceptional Conditions

In PHP before 5.6.31, 7.x before 7.0.21, and 7.1.x before 7.1.7, the openssl extension PEM sealing code did not check the return value of the OpenSSL sealing function, which could lead to a crash of the PHP interpreter, related to an interpretation conflict for a negative number in...

CVE-2015-8867: Undefined Security Weakness

The opensslrandompseudobytes function in ext/openssl/openssl.c in PHP before 5.4.44, 5.5.x before 5.5.28, and 5.6.x before 5.6.12 incorrectly relies on the deprecated RANDpseudobytes function, which makes it easier for remote attackers to defeat cryptographic protection mechanisms via unspecified...

CVE-2013-6420

The asn1timetotimet function in ext/openssl/openssl.c in PHP before 5.3.28, 5.4.x before 5.4.23, and 5.5.x before 5.5.7 does not properly parse 1 notBefore and 2 notAfter timestamps in X.509 certificates, which allows remote attackers to execute arbitrary code or cause a denial of service memory...

CVE-2013-6420: Improper Restriction of Operations within the Bounds of a Memory Buffer

The asn1timetotimet function in ext/openssl/openssl.c in PHP before 5.3.28, 5.4.x before 5.4.23, and 5.5.x before 5.5.7 does not properly parse 1 notBefore and 2 notAfter timestamps in X.509 certificates, which allows remote attackers to execute arbitrary code or cause a denial of service memory...

CVE-2012-6113: Exposure of Sensitive Information to an Unauthorized Actor

The opensslencrypt function in ext/openssl/openssl.c in PHP 5.3.9 through 5.3.13 does not initialize a certain variable, which allows remote attackers to obtain sensitive information from process memory by providing zero bytes of input data...