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: 7.5EPSS: 0%CPEs: 2EXPL: 0CVE-2023-0401 – NULL dereference during PKCS7 data verification
https://notcve.org/view.php?id=CVE-2023-0401
A NULL pointer can be dereferenced when signatures are being verified on PKCS7 signed or signedAndEnveloped data. In case the hash algorithm used for the signature is known to the OpenSSL library but the implementation of the hash algorithm is not available the digest initialization will fail. There is a missing check for the return value from the initialization function which later leads to invalid usage of the digest API most likely leading to a crash. The unavailability of an algorithm can be caused by using FIPS enabled configuration of providers or more commonly by not loading the legacy provider. PKCS7 data is processed by the SMIME library calls and also by the time stamp (TS) library calls. The TLS implementation in OpenSSL does not call these functions however third party applications would be affected if they call these functions to verify signatures on untrusted data. A NULL pointer vulnerability was found in OpenSSL, which can be dereferenced when signatures are being verified on PKCS7 signed or signedAndEnveloped data. • https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=d3b6dfd70db844c4499bec6ad6601623a565e674 https://security.gentoo.org/glsa/202402-08 https://www.openssl.org/news/secadv/20230207.txt https://access.redhat.com/security/cve/CVE-2023-0401 https://bugzilla.redhat.com/show_bug.cgi?id=2164500 • CWE-476: NULL Pointer Dereference •
CVSS: 7.5EPSS: 0%CPEs: 1EXPL: 0CVE-2023-0217 – NULL dereference validating DSA public key
https://notcve.org/view.php?id=CVE-2023-0217
An invalid pointer dereference on read can be triggered when an application tries to check a malformed DSA public key by the EVP_PKEY_public_check() function. This will most likely lead to an application crash. This function can be called on public keys supplied from untrusted sources which could allow an attacker to cause a denial of service attack. The TLS implementation in OpenSSL does not call this function but applications might call the function if there are additional security requirements imposed by standards such as FIPS 140-3. A flaw was found in OpenSSL. An invalid pointer dereference on read can be triggered when an application tries to check a malformed DSA public key by the EVP_PKEY_public_check() function, most likely leading to an application crash. • https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=23985bac83fd50c8e29431009302b5442f985096 https://security.gentoo.org/glsa/202402-08 https://www.openssl.org/news/secadv/20230207.txt https://access.redhat.com/security/cve/CVE-2023-0217 https://bugzilla.redhat.com/show_bug.cgi?id=2164499 • CWE-476: NULL Pointer Dereference •
CVSS: 7.5EPSS: 0%CPEs: 4EXPL: 0CVE-2022-4450 – Double free after calling PEM_read_bio_ex
https://notcve.org/view.php?id=CVE-2022-4450
The function PEM_read_bio_ex() reads a PEM file from a BIO and parses and decodes the "name" (e.g. "CERTIFICATE"), any header data and the payload data. If the function succeeds then the "name_out", "header" and "data" arguments are populated with pointers to buffers containing the relevant decoded data. The caller is responsible for freeing those buffers. It is possible to construct a PEM file that results in 0 bytes of payload data. In this case PEM_read_bio_ex() will return a failure code but will populate the header argument with a pointer to a buffer that has already been freed. • https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=63bcf189be73a9cc1264059bed6f57974be74a83 https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=bbcf509bd046b34cca19c766bbddc31683d0858b https://security.gentoo.org/glsa/202402-08 https://www.openssl.org/news/secadv/20230207.txt https://access.redhat.com/security/cve/CVE-2022-4450 https://bugzilla.redhat.com/show_bug.cgi?id=2164494 • CWE-415: Double Free •
CVSS: 7.5EPSS: 0%CPEs: 4EXPL: 0CVE-2023-0215 – Use-after-free following BIO_new_NDEF
https://notcve.org/view.php?id=CVE-2023-0215
The public API function BIO_new_NDEF is a helper function used for streaming ASN.1 data via a BIO. It is primarily used internally to OpenSSL to support the SMIME, CMS and PKCS7 streaming capabilities, but may also be called directly by end user applications. The function receives a BIO from the caller, prepends a new BIO_f_asn1 filter BIO onto the front of it to form a BIO chain, and then returns the new head of the BIO chain to the caller. Under certain conditions, for example if a CMS recipient public key is invalid, the new filter BIO is freed and the function returns a NULL result indicating a failure. However, in this case, the BIO chain is not properly cleaned up and the BIO passed by the caller still retains internal pointers to the previously freed filter BIO. If the caller then goes on to call BIO_pop() on the BIO then a use-after-free will occur. • https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=8818064ce3c3c0f1b740a5aaba2a987e75bfbafd https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=9816136fe31d92ace4037d5da5257f763aeeb4eb https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=c3829dd8825c654652201e16f8a0a0c46ee3f344 https://security.gentoo.org/glsa/202402-08 https://security.netapp.com/advisory/ntap-20230427-0007 https://security.netapp.com/advisory/ntap-20230427-0009 https://security.netapp.com/advisory/ntap-20240621-0006 https:/&#x • CWE-416: Use After Free •