openssl: CA certificate check bypass with X509_V_FLAG_X509_STRICT

A flaw was found in openssl. The flag that enables additional security checks of certificates present in a certificate chain was not enabled allowing a confirmation step to verify that certificates in the chain are valid CA certificates is bypassed. The highest threat from this vulnerability is t...

openssl: NULL pointer dereference in signature_algorithms processing

A flaw was found in openssl. A server crash and denial of service attack could occur if a client sends a TLSv1.2 renegotiation ClientHello and omits the signaturealgorithms extension but includes a signaturealgorithmscert extension. The highest threat from this vulnerability is to system...

openssl: CA certificate check bypass with X509_V_FLAG_X509_STRICT

A flaw was found in openssl. The flag that enables additional security checks of certificates present in a certificate chain was not enabled allowing a confirmation step to verify that certificates in the chain are valid CA certificates is bypassed. The highest threat from this vulnerability is t...

openssl: NULL pointer dereference in signature_algorithms processing

A flaw was found in openssl. A server crash and denial of service attack could occur if a client sends a TLSv1.2 renegotiation ClientHello and omits the signaturealgorithms extension but includes a signaturealgorithmscert extension. The highest threat from this vulnerability is to system...

RHEL 8 : openssl (RHSA-2021:1131)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2021:1131 advisory. OpenSSL is a toolkit that implements the Secure Sockets Layer SSL and Transport Layer Security TLS protocols, as well as a full-strength...

The vulnerability of the X509_V_FLAG_X509_STRICT configuration implementation in the OpenSSL library allows a perpetrator to gain unauthorized access to protected information.

The vulnerability of the X509VFLAGX509STRICT configuration in the OpenSSL library is related to errors in the certificate validation process. Exploiting this vulnerability could allow a malicious actor, operating remotely, to gain unauthorized access to protected information...

openssl: NULL pointer dereference in signature_algorithms processing

A flaw was found in openssl. A server crash and denial of service attack could occur if a client sends a TLSv1.2 renegotiation ClientHello and omits the signaturealgorithms extension but includes a signaturealgorithmscert extension. The highest threat from this vulnerability is to system...

Tenable SecurityCenter 5.13.x < 5.18.0 DoS (TNS-2021-06)

According to its self-reported version, the Tenable SecurityCenter application installed on the remote host is version 5.13.x 5.18.0 and affected by the following OpenSSL denial of service vulnerability: - An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello...

Exploit for NULL Pointer Dereference in Openssl

CVE-2021-3449 OpenSSL This issue was reported to OpenSSL on 1...

OpenSSL Code Problem Vulnerability (CNVD-2021-39524)

OpenSSL is an open source capable general-purpose cryptographic library from the Openssl team that implements the Secure Sockets Layer SSLv2/v3 and Secure Transport Layer TLSv1 protocols. The product supports a variety of cryptographic algorithms , including symmetric ciphers , hash algorithms ,...

Oracle Linux 6 : openssl (ELSA-2021-9137)

The remote Oracle Linux 6 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2021-9137 advisory. 1.0.1e-59.0.1 - Backport fixes for CVE-2020-1971 Orabug: 32654738 Tenable has extracted the preceding description block directly from the Oracle Linux security...

SUSE-SU-2021:14670-1 Security update for openssl

This update for openssl fixes the following issues: - CVE-2021-23840: Fixed an Integer overflow in CipherUpdate bsc1182333 - CVE-2021-23841: Fixed a Null pointer dereference in X509issuerandserialhash bsc1182331...

MGASA-2021-0108 Updated openssl and compat-openssl10 packages fix security vulnerabilities

Paul Kehrer discovered that OpenSSL incorrectly handled certain input lengths in EVP functions. A remote attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service CVE-2021-23840. Tavis Ormandy discovered that OpenSSL incorrectly handled parsing issuer...

OpenSSL Input Validation Error Vulnerability

OpenSSL is a powerful, commercial-grade, full-featured toolkit for the Transport Layer Security TLS and Secure Sockets Layer SSL protocols. It is also a general-purpose cryptographic library. An input validation error vulnerability exists in the OpenSSL public API that stems from the...

Security Bulletin: IBM MQ Appliance is affected by an OpenSSL vulnerability (CVE-2020-1971)

Summary IBM MQ Appliance has resolved an OpenSSL vulnerability. Vulnerability Details CVEID: CVE-2020-1971 DESCRIPTION: OpenSSL is vulnerable to a denial of service, caused by a NULL pointer dereference. If the GENERALNAMEcmp function contain an EDIPARTYNAME, an attacker could exploit this...

Node.js -- February 2021 Security Releases

Node.js reports: HTTP2 'unknownProtocol' cause Denial of Service by resource exhaustion Critical CVE-2021-22883 Affected Node.js versions are vulnerable to denial of service attacks when too many connection attempts with an 'unknownProtocol' are established. This leads to a leak of file...

USN-4738-1 openssl, openssl1.0 vulnerabilities

Paul Kehrer discovered that OpenSSL incorrectly handled certain input lengths in EVP functions. A remote attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service. CVE-2021-23840 Tavis Ormandy discovered that OpenSSL incorrectly handled parsing issuer...

AZL-41571 CVE-2021-23841 affecting package shim-unsigned-aarch64 for versions less than 15.8-5

The OpenSSL public API function X509issuerandserialhash attempts to create a unique hash value based on the issuer and serial number data contained within an X509 certificate. However it fails to correctly handle any errors that may occur while parsing the issuer field which might occur if the...

AZL-40768 CVE-2021-23841 affecting package shim-unsigned-x64 for versions less than 15.8-5

The OpenSSL public API function X509issuerandserialhash attempts to create a unique hash value based on the issuer and serial number data contained within an X509 certificate. However it fails to correctly handle any errors that may occur while parsing the issuer field which might occur if the...

OpenSSL Code Issue Vulnerability

OpenSSL is an open source capable general-purpose cryptographic library from the Openssl team that implements the Secure Sockets Layer SSLv2/v3 and Secure Transport Layer TLSv1 protocols. It supports a variety of cryptographic algorithms, including symmetric ciphers, hashing algorithms, secure...