CVSS: 5.3EPSS: 0%CPEs: 4EXPL: 0CVE-2023-0465 – Invalid certificate policies in leaf certificates are silently ignored
https://notcve.org/view.php?id=CVE-2023-0465
Applications that use a non-default option when verifying certificates may be vulnerable to an attack from a malicious CA to circumvent certain checks. Invalid certificate policies in leaf certificates are silently ignored by OpenSSL and other certificate policy checks are skipped for that certificate. A malicious CA could use this to deliberately assert invalid certificate policies in order to circumvent policy checking on the certificate altogether. Policy processing is disabled by default but can be enabled by passing the `-policy' argument to the command line utilities or by calling the `X509_VERIFY_PARAM_set1_policies()' function. A flaw was found in OpenSSL. Applications that use a non-default option when verifying certificates may be vulnerable to an attack from a malicious CA to circumvent certain checks. OpenSSL and other certificate policy checks silently ignore invalid certificate policies in leaf certificates that are skipped for that certificate. A malicious CA could use this to deliberately assert invalid certificate policies to circumvent policy checking on the certificate altogether. • https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=10325176f3d3e98c6e2b3bf5ab1e3b334de6947a https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=1dd43e0709fece299b15208f36cc7c76209ba0bb https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=b013765abfa80036dc779dd0e50602c57bb3bf95 https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=facfb1ab745646e97a1920977ae4a9965ea61d5c https://lists.debian.org/debian-lts-announce/2023/06/msg00011.html https://security.gentoo.org/glsa/202402-08 https://securi • CWE-295: Improper Certificate Validation •
CVSS: 5.3EPSS: 0%CPEs: 4EXPL: 0CVE-2023-0466 – Certificate policy check not enabled
https://notcve.org/view.php?id=CVE-2023-0466
The function X509_VERIFY_PARAM_add0_policy() is documented to implicitly enable the certificate policy check when doing certificate verification. However the implementation of the function does not enable the check which allows certificates with invalid or incorrect policies to pass the certificate verification. As suddenly enabling the policy check could break existing deployments it was decided to keep the existing behavior of the X509_VERIFY_PARAM_add0_policy() function. Instead the applications that require OpenSSL to perform certificate policy check need to use X509_VERIFY_PARAM_set1_policies() or explicitly enable the policy check by calling X509_VERIFY_PARAM_set_flags() with the X509_V_FLAG_POLICY_CHECK flag argument. Certificate policy checks are disabled by default in OpenSSL and are not commonly used by applications. A flaw was found in OpenSSL. The X509_VERIFY_PARAM_add0_policy() function is documented to enable the certificate policy check when doing certificate verification implicitly. However, implementing the function does not enable the check, allowing certificates with invalid or incorrect policies to pass the certificate verification. • http://www.openwall.com/lists/oss-security/2023/09/28/4 https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=0d16b7e99aafc0b4a6d729eec65a411a7e025f0a https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=51e8a84ce742db0f6c70510d0159dad8f7825908 https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=73398dea26de9899fb4baa94098ad0a61f435c72 https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=fc814a30fc4f0bc54fcea7d9a7462f5457aab061 https://lists.debian.org/debian-lts-announce/2023/06/msg00011.html • CWE-295: Improper Certificate Validation •
CVSS: 7.5EPSS: 0%CPEs: 4EXPL: 0CVE-2023-0464 – Excessive Resource Usage Verifying X.509 Policy Constraints
https://notcve.org/view.php?id=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 computational resources, leading to a denial-of-service (DoS) attack on affected systems. Policy processing is disabled by default but can be enabled by passing the `-policy' argument to the command line utilities or by calling the `X509_VERIFY_PARAM_set1_policies()' function. A security vulnerability has been identified in all supported OpenSSL versions related to verifying X.509 certificate chains that include policy constraints. This flaw allows attackers to exploit this vulnerability by creating a malicious certificate chain that triggers exponential use of computational resources, leading to a denial of service (DoS) attack on affected systems. Policy processing is disabled by default but can be enabled by passing the -policy' argument to the command line utilities or calling the X509_VERIFY_PARAM_set1_policies()' function. • https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2017771e2db3e2b96f89bbe8766c3209f6a99545 https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2dcd4f1e3115f38cefa43e3efbe9b801c27e642e https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=879f7080d7e141f415c79eaa3a8ac4a3dad0348b https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=959c59c7a0164117e7f8366466a32bb1f8d77ff1 https://lists.debian.org/debian-lts-announce/2023/06/msg00011.html https://security.gentoo.org/glsa/202402-08 https://securi • CWE-295: Improper Certificate Validation CWE-400: Uncontrolled Resource Consumption •
CVSS: 4.9EPSS: 0%CPEs: 4EXPL: 0CVE-2007-5536
https://notcve.org/view.php?id=CVE-2007-5536
Unspecified vulnerability in OpenSSL before A.00.09.07l on HP-UX B.11.11, B.11.23, and B.11.31 allows local users to cause a denial of service via unspecified vectors. Vulnerabilidad sin especificar en el OpenSSL anterior al A.00.09.07l en el HP-UX B.11.11, B.11.23 y B.11.31 permite a usuarios locales provocar una denegación de servicio a través de vectores sin especificar. • http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c01203958 http://osvdb.org/37894 http://secunia.com/advisories/27265 http://www.securityfocus.com/bid/26093 http://www.vupen.com/english/advisories/2007/3526 https://exchange.xforce.ibmcloud.com/vulnerabilities/37231 https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5871 •