CVE-2023-0464 Excessive Resource Usage Verifying X.509 Policy Constraints

A security vulnerability has been identified in all supported versions of OpenSSL related to the verification of X.509 certificate chains that include policy constraints. Attackers may be able to exploit this vulnerability by creating a malicious certificate chain that triggers exponential use of...

CVE-2023-0464 Excessive Resource Usage Verifying X.509 Policy Constraints

A security vulnerability has been identified in all supported versions of OpenSSL related to the verification of X.509 certificate chains that include policy constraints. Attackers may be able to exploit this vulnerability by creating a malicious certificate chain that triggers exponential use of...

CVE-2023-0464 Excessive Resource Usage Verifying X.509 Policy Constraints

A security vulnerability has been identified in all supported versions of OpenSSL related to the verification of X.509 certificate chains that include policy constraints. Attackers may be able to exploit this vulnerability by creating a malicious certificate chain that triggers exponential use of...

CVE-2023-0464

A security vulnerability has been identified in all supported versions of OpenSSL related to the verification of X.509 certificate chains that include policy constraints. Attackers may be able to exploit this vulnerability by creating a malicious certificate chain that triggers exponential use of...

openssl security update

CentOS Errata and Security Advisory CESA-2023:1335 An update for openssl is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity...

openssl: use-after-free following BIO_new_NDEF

A use-after-free vulnerability was found in OpenSSL's BIOnewNDEF function. The public API function BIOnewNDEF is a helper function used for streaming ASN.1 data via a BIO. It is primarily used internally by OpenSSL to support the SMIME, CMS, and PKCS7 streaming capabilities, but it may also be...

Important: Red Hat Security Advisory: openssl security update

An update for openssl is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from t...

openssl: X.400 address type confusion in X.509 GeneralName

A type confusion vulnerability was found in OpenSSL when OpenSSL X.400 addresses processing inside an X.509 GeneralName. When CRL checking is enabled for example, the application sets the X509VFLAGCRLCHECK flag, this vulnerability may allow an attacker to pass arbitrary pointers to a memcmp call,...

openssl: double free after calling PEM_read_bio_ex

A double-free vulnerability was found in OpenSSL's PEMreadbioex function. The function PEMreadbioex reads a PEM file from a BIO and parses and decodes the "name" for example, "CERTIFICATE", any header data, and the payload data. If the function succeeds, then the "nameout," "header," and "data"...

openssl: timing attack in RSA Decryption implementation

A timing-based side channel exists in the OpenSSL RSA Decryption implementation, which could be sufficient to recover a ciphertext across a network in a Bleichenbacher style attack. To achieve a successful decryption, an attacker would have to be able to send a very large number of trial messages...

CVE-2023-0464

A security vulnerability has been identified in all supported versions of OpenSSL related to the verification of X.509 certificate chains that include policy constraints. Attackers may be able to exploit this vulnerability by creating a malicious certificate chain that triggers exponential use of...

OpenSSL 信任管理问题漏洞

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...

Important: openssl

Issue Overview: A flaw was found in Open SSL. A read buffer overrun can be triggered in X.509 certificate verification, specifically in name constraint checking. Note that this occurs after certificate chain signature verification, and requires either a CA to have signed the malicious certificate...

Zyxel Unauthenticated LAN Remote Code Execution Exploit

This Metasploit module exploits a buffer overflow in the zhttpd binary /bin/zhttpd. It is present on more than 40 Zyxel routers and CPE devices. The code execution vulnerability can only be exploited by an attacker if the zhttp webserver is reachable. No authentication is required. After...

Security fix for the ALT Linux 10 package node version 16.19.1-alt1

16.19.1-alt1 built March 22, 2023 Andrey Cherepanov in task 316988 March 13, 2023 Vitaly Lipatov - new version 16.19.1 with rpmrb script - CVE-2023-23918: Node.js Permissions policies can be bypassed via process.mainModule High - CVE-2023-23919: Node.js OpenSSL error handling issues in nodejs...

Oracle Linux 7 : openssl (ELSA-2023-12205)

The remote Oracle Linux 7 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2023-12205 advisory. - Fixes CVE-2023-0286 X.400 address type confusion in X.509 GeneralName Tenable has extracted the preceding description block directly from the Oracle Linux...

CentOS 7 : openssl (RHSA-2023:1335)

The remote CentOS Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2023:1335 advisory. - There is a type confusion vulnerability relating to X.400 address processing inside an X.509 GeneralName. X.400 addresses were parsed as an ASN1STRING but the...

OpenSSL 1.0.2 < 1.0.2zh Multiple Vulnerabilities

The version of OpenSSL installed on the remote host is prior to 1.0.2zh. It is, therefore, affected by multiple vulnerabilities as referenced in the 1.0.2zh advisory. - Issue summary: Processing some specially crafted ASN.1 object identifiers or data containing them may be very slow. Impact...

Important: openssl

Issue Overview: The BNmodsqrt function, which computes a modular square root, contains a bug that can cause it to loop forever for non-prime moduli. Internally this function is used when parsing certificates that contain elliptic curve public keys in compressed form or explicit elliptic curve...

Low: openssl

Issue Overview: If an X.509 certificate contains a malformed policy constraint and policy processing is enabled, then a write lock will be taken twice recursively. On some operating systems most widely: Windows this results in a denial of service when the affected process hangs. Policy processing...