CVSS: 7.5EPSS: 0%CPEs: 28EXPL: 0CVE-2021-4044 – Invalid handling of X509_verify_cert() internal errors in libssl
https://notcve.org/view.php?id=CVE-2021-4044
Internally libssl in OpenSSL calls X509_verify_cert() on the client side to verify a certificate supplied by a server. That function may return a negative return value to indicate an internal error (for example out of memory). Such a negative return value is mishandled by OpenSSL and will cause an IO function (such as SSL_connect() or SSL_do_handshake()) to not indicate success and a subsequent call to SSL_get_error() to return the value SSL_ERROR_WANT_RETRY_VERIFY. This return value is only supposed to be returned by OpenSSL if the application has previously called SSL_CTX_set_cert_verify_callback(). Since most applications do not do this the SSL_ERROR_WANT_RETRY_VERIFY return value from SSL_get_error() will be totally unexpected and applications may not behave correctly as a result. • https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=758754966791c537ea95241438454aa86f91f256 https://security.netapp.com/advisory/ntap-20211229-0003 https://www.openssl.org/news/secadv/20211214.txt • CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') •
CVSS: 9.1EPSS: 0%CPEs: 7EXPL: 0CVE-2020-7043
https://notcve.org/view.php?id=CVE-2020-7043
An issue was discovered in openfortivpn 1.11.0 when used with OpenSSL before 1.0.2. tunnel.c mishandles certificate validation because hostname comparisons do not consider '\0' characters, as demonstrated by a good.example.com\x00evil.example.com attack. Se detectó un problema en openfortivpn versión 1.11.0, cuando se usaba con OpenSSL versiones anteriores a 1.0.2. en el archivo tunnel.c maneja inapropiadamente la comprobación del certificado porque las comparaciones hostname no consideran los caracteres "\0", como es demostrado por un ataque de good.example.com\x00evil.example.com. • http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00009.html http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00011.html https://github.com/adrienverge/openfortivpn/commit/6328a070ddaab16faaf008cb9a8a62439c30f2a8 https://github.com/adrienverge/openfortivpn/commit/cd9368c6a1b4ef91d77bb3fdbe2e5bc34aa6f4c4 https://github.com/adrienverge/openfortivpn/issues/536 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CKNKSGBVYGRRVRLFEFBEKUEJYJR5LWOF https://lists.fedoraproject.org/archives/l • CWE-295: Improper Certificate Validation •
CVSS: 5.3EPSS: 0%CPEs: 7EXPL: 0CVE-2020-7042
https://notcve.org/view.php?id=CVE-2020-7042
An issue was discovered in openfortivpn 1.11.0 when used with OpenSSL 1.0.2 or later. tunnel.c mishandles certificate validation because the hostname check operates on uninitialized memory. The outcome is that a valid certificate is never accepted (only a malformed certificate may be accepted). Se detectó un problema en openfortivpn versión 1.11.0, cuando se usaba con OpenSSL versiones 1.0.2 o posteriores, en el archivo tunnel.c, maneja inapropiadamente la comprobación del certificado porque la verificación del nombre de host funciona en la memoria no inicializada. El resultado es que un certificado válido nunca es aceptado (solo puede ser aceptado un certificado malformado). • http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00009.html http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00011.html https://github.com/adrienverge/openfortivpn/commit/9eee997d599a89492281fc7ffdd79d88cd61afc3 https://github.com/adrienverge/openfortivpn/commit/cd9368c6a1b4ef91d77bb3fdbe2e5bc34aa6f4c4 https://github.com/adrienverge/openfortivpn/issues/536 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CKNKSGBVYGRRVRLFEFBEKUEJYJR5LWOF https://lists.fedoraproject.org/archives/l • CWE-295: Improper Certificate Validation CWE-908: Use of Uninitialized Resource •
CVSS: 5.3EPSS: 0%CPEs: 7EXPL: 0CVE-2020-7041
https://notcve.org/view.php?id=CVE-2020-7041
An issue was discovered in openfortivpn 1.11.0 when used with OpenSSL 1.0.2 or later. tunnel.c mishandles certificate validation because an X509_check_host negative error code is interpreted as a successful return value. Se detectó un problema en openfortivpn versión 1.11.0, cuando se usaba con OpenSSL versiones 1.0.2 o posteriores, el archivo tunnel.c maneja inapropiadamente la comprobación del certificado porque un código de error negativo de X509_check_host se interpreta como un valor de retorno exitoso. • http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00009.html http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00011.html https://github.com/adrienverge/openfortivpn/commit/60660e00b80bad0fadcf39aee86f6f8756c94f91 https://github.com/adrienverge/openfortivpn/commit/cd9368c6a1b4ef91d77bb3fdbe2e5bc34aa6f4c4 https://github.com/adrienverge/openfortivpn/issues/536 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CKNKSGBVYGRRVRLFEFBEKUEJYJR5LWOF https://lists.fedoraproject.org/archives/l • CWE-295: Improper Certificate Validation •
CVSS: 9.8EPSS: 0%CPEs: 13EXPL: 0CVE-2018-16395 – ruby: OpenSSL::X509:: Name equality check does not work correctly
https://notcve.org/view.php?id=CVE-2018-16395
An issue was discovered in the OpenSSL library in Ruby before 2.3.8, 2.4.x before 2.4.5, 2.5.x before 2.5.2, and 2.6.x before 2.6.0-preview3. When two OpenSSL::X509::Name objects are compared using ==, depending on the ordering, non-equal objects may return true. When the first argument is one character longer than the second, or the second argument contains a character that is one less than a character in the same position of the first argument, the result of == will be true. This could be leveraged to create an illegitimate certificate that may be accepted as legitimate and then used in signing or encryption operations. Se ha descubierto un problema en la biblioteca OpenSSL en Ruby, en versiones anteriores a la 2.3.8, versiones 2.4.x anteriores a la 2.4.5, versiones 2.5.x anteriores a la 2.5.2 y versiones 2.6.x anteriores a la 2.6.0-preview3. • http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html http://www.securitytracker.com/id/1042105 https://access.redhat.com/errata/RHSA-2018:3729 https://access.redhat.com/errata/RHSA-2018:3730 https://access.redhat.com/errata/RHSA-2018:3731 https://access.redhat.com/errata/RHSA-2018:3738 https://access.redhat.com/errata/RHSA-2019:1948 https://access.redhat.com/errata/RHSA-2019:2565 https://hackerone.com/reports/387250 https://lists.debian.org/debian-lts • CWE-295: Improper Certificate Validation •