LibreSSL Information Disclosure Vulnerability

LibreSSL is a fork of the OpenSSL cryptographic software library developed by the OpenBSD project and an open source implementation of the Secure Sockets Layer SSL and Transport Layer Security TLS protocols. LibreSSL version 2.7.0 prior to 2.7.1 contains a security vulnerability in the...

Internet Bug Bounty: Silent omission of certificate hostname verification in LibreSSL and BoringSSL

Abstract LibreSSL and BoringSSL implemented X509VERIFYPARAMset1host differently than OpenSSL. All applications that use the preferred and documented way to configure a TLS connection for hostname validation, silently neglect to perform hostname validation at all. As a consequence, they are...

CVE-2018-8970

The intx509paramsethosts function in lib/libcrypto/x509/x509vpm.c in LibreSSL 2.7.0 before 2.7.1 does not support a certain special case of a zero name length, which causes silent omission of hostname verification, and consequently allows man-in-the-middle attackers to spoof servers and obtain...

CVE-2018-8970

The intx509paramsethosts function in lib/libcrypto/x509/x509vpm.c in LibreSSL 2.7.0 before 2.7.1 does not support a certain special case of a zero name length, which causes silent omission of hostname verification, and consequently allows man-in-the-middle attackers to spoof servers and obtain...

CVE-2018-8970

The intx509paramsethosts function in lib/libcrypto/x509/x509vpm.c in LibreSSL 2.7.0 before 2.7.1 does not support a certain special case of a zero name length, which causes silent omission of hostname verification, and consequently allows man-in-the-middle attackers to spoof servers and obtain...

Design/Logic Flaw

The intx509paramsethosts function in lib/libcrypto/x509/x509vpm.c in LibreSSL 2.7.0 before 2.7.1 does not support a certain special case of a zero name length, which causes silent omission of hostname verification, and consequently allows man-in-the-middle attackers to spoof servers and obtain...

CVE-2018-8970

The intx509paramsethosts function in lib/libcrypto/x509/x509vpm.c in LibreSSL 2.7.0 before 2.7.1 does not support a certain special case of a zero name length, which causes silent omission of hostname verification, and consequently allows man-in-the-middle attackers to spoof servers and obtain...

CVE-2018-8970

CVE-2018-8970 affects LibreSSL 2.7.0 before 2.7.1, where int_x509_param_set_hosts mishandles a zero-length name, causing silent omission of hostname verification and enabling MITM-style information disclosure. The issue arises from how X509_VERIFY_PARAM_set1_host with namelen=0 is handled, per co...

openSUSE Security Update : libressl (openSUSE-2017-1323)

This update for libressl fixes the following issues : - an out-of-bounds read in the DES code may have led to an application crash boo1065363 %NASLMINLEVEL 70300 C Tenable Network Security, Inc. The descriptive text and package checks in this plugin were extracted from openSUSE Security Update...

LibreSSL TLS Certificate Validation Vulnerability

LibreSSL is an open source implementation of the Secure Sockets Layer SSL and Transport Layer Security TLS protocols. A certificate validation vulnerability exists in LibreSSL TLS. A remote attacker can exploit this vulnerability by relying on SSLgetverifyresult, resulting in LibreSSL lacking TLS...

openSUSE Security Update : libressl (openSUSE-2017-560)

This update for libressl to version 2.5.1 fixes the following issues : These security issues were fixed : - CVE-2016-0702: Prevent side channel attack on modular exponentiation boo968050. - CVE-2016-7056: Avoid a side-channel cache-timing attack that can leak the ECDSA private keys when signing...

openSUSE Security Update : libressl (openSUSE-2017-561)

This update for libressl to version 2.5.1 fixes the following issues : These security issues were fixed : - CVE-2016-0702: Prevent side channel attack on modular exponentiation boo968050. - CVE-2016-7056: Avoid a side-channel cache-timing attack that can leak the ECDSA private keys when signing...

FreeBSD : LibreSSL -- TLS verification vulnerability (24673ed7-2bf3-11e7-b291-b499baebfeaf)

Jakub Jirutka reports : LibreSSL 2.5.1 to 2.5.3 lacks TLS certificate verification if SSLgetverifyresult is relied upon for a later check of a verification result, in a use case where a user-provided verification callback returns 1, as demonstrated by acceptance of invalid certificates by nginx...

Code injection

LibreSSL 2.5.1 to 2.5.3 lacks TLS certificate verification if SSLgetverifyresult is relied upon for a later check of a verification result, in a use case where a user-provided verification callback returns 1, as demonstrated by acceptance of invalid certificates by nginx...

CVE-2017-8301

LibreSSL 2.5.1 to 2.5.3 lacks TLS certificate verification if SSLgetverifyresult is relied upon for a later check of a verification result, in a use case where a user-provided verification callback returns 1, as demonstrated by acceptance of invalid certificates by nginx...

CVE-2017-8301

LibreSSL 2.5.1 to 2.5.3 lacks TLS certificate verification if SSLgetverifyresult is relied upon for a later check of a verification result, in a use case where a user-provided verification callback returns 1, as demonstrated by acceptance of invalid certificates by nginx...

ALPINE-CVE-2017-8301

LibreSSL 2.5.1 to 2.5.3 lacks TLS certificate verification if SSLgetverifyresult is relied upon for a later check of a verification result, in a use case where a user-provided verification callback returns 1, as demonstrated by acceptance of invalid certificates by nginx...

CVE-2017-8301

CVE-2017-8301 affects LibreSSL 2.5.1–2.5.3 and describes a TLS certificate verification weakness that can occur when relying on SSL_get_verify_result for a later check and a user-provided verification callback returns 1, demonstrated by nginx accepting invalid certificates. The core issue is insu...

CVE-2017-8301

LibreSSL 2.5.1 to 2.5.3 lacks TLS certificate verification if SSLgetverifyresult is relied upon for a later check of a verification result, in a use case where a user-provided verification callback returns 1, as demonstrated by acceptance of invalid certificates by nginx...

CVE-2017-8301

LibreSSL 2.5.1 to 2.5.3 lacks TLS certificate verification if SSLgetverifyresult is relied upon for a later check of a verification result, in a use case where a user-provided verification callback returns 1, as demonstrated by acceptance of invalid certificates by nginx...