Improper Certificate Validation in EM-HTTP-Request

EM-HTTP-Request 1.1.5 uses the library eventmachine in an insecure way that allows an attacker to perform a man-in-the-middle attack against users of the library. The hostname in a TLS server certificate is not verified...

Improper certificate validation in em-imap

em-imap 0.5 and earlier use the library eventmachine in an insecure way that allows an attacker to perform a man-in-the-middle attack against users of the library. The hostname in a TLS server certificate is not verified...

Design/Logic Flaw

It was found that various OpenID Providers OPs had TLS Server Certificates that used weak keys, as a result of the Debian Predictable Random Number Generator CVE-2008-0166. In combination with the DNS Cache Poisoning issue CVE-2008-1447 and the fact that almost all SSL/TLS implementations do not...

NULL pointer deref in signature_algorithms processing

An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signaturealgorithms extension where it was present in the initial ClientHello, but includes a signaturealgorithmscert extension then a NU...

RUSTSEC-2021-0056 CA certificate check bypass with X509_V_FLAG_X509_STRICT

The X509VFLAGX509STRICT flag enables additional security checks of the certificates present in a certificate chain. It is not set by default. Starting from OpenSSL version 1.1.1h a check to disallow certificates in the chain that have explicitly encoded elliptic curve parameters was added as an...

CA certificate check bypass with X509_V_FLAG_X509_STRICT

The X509VFLAGX509STRICT flag enables additional security checks of the certificates present in a certificate chain. It is not set by default. Starting from OpenSSL version 1.1.1h a check to disallow certificates in the chain that have explicitly encoded elliptic curve parameters was added as an...

SUSE: Security Advisory (SUSE-SU-2020:0454-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2021 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Oracle Linux 8 : openssl (ELSA-2021-1024)

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-1024 advisory. - CVE-2021-3450 openssl: CA certificate check bypass with X509VFLAGX509STRICT Tenable has extracted the preceding description block directly from the...

Tenable.sc 5.16.0 / 5.17.0 OpenSSL DoS (TNS-2021-06)

According to its self-reported version, the Tenable.sc application installed on the remote host is version 5.16.0 or 5.17.0 and affected by the following OpenSSL denial of service vulnerability: - An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from...

Updated openssl packages fix security vulnerability

An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signaturealgorithms extension where it was present in the initial ClientHello, but includes a signaturealgorithmscert extension then a NU...

MGASA-2021-0176 Updated openssl packages fix security vulnerability

An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signaturealgorithms extension where it was present in the initial ClientHello, but includes a signaturealgorithmscert extension then a NU...

SUSE SLES12 Security Update : openssl-1_1 (SUSE-SU-2021:0954-1)

This update for openssl-11 fixes the following security issue : CVE-2021-3449: An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signaturealgorithms extension but includes a...

openSUSE Security Update : openssl-1_1 (openSUSE-2021-476)

This update for openssl-11 fixes the security issue : - CVE-2021-3449: An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signaturealgorithms extension but includes a signaturealgorithmsce...

OPENSUSE-SU-2021:0476-1 Security update for openssl-1_1

This update for openssl-11 fixes the security issue: CVE-2021-3449: An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signaturealgorithms extension but includes a signaturealgorithmscert...

CVE-2021-3449

An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signaturealgorithms extension where it was present in the initial ClientHello, but includes a signaturealgorithmscert extension then a NU...

Null pointer dereference

An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signaturealgorithms extension where it was present in the initial ClientHello, but includes a signaturealgorithmscert extension then a NU...

SUSE-SU-2021:0955-1 Security update for openssl-1_1

This update for openssl-11 fixes the security issue: CVE-2021-3449: An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signaturealgorithms extension but includes a signaturealgorithmscert...

SUSE-SU-2021:0954-1 Security update for openssl-1_1

This update for openssl-11 fixes the following security issue: CVE-2021-3449: An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signaturealgorithms extension but includes a...

CVE-2021-3450 CA certificate check bypass with X509_V_FLAG_X509_STRICT

The X509VFLAGX509STRICT flag enables additional security checks of the certificates present in a certificate chain. It is not set by default. Starting from OpenSSL version 1.1.1h a check to disallow certificates in the chain that have explicitly encoded elliptic curve parameters was added as an...

CVE-2021-3449 NULL pointer deref in signature_algorithms processing

An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signaturealgorithms extension where it was present in the initial ClientHello, but includes a signaturealgorithmscert extension then a NU...