The X509_V_FLAG_X509_STRICT flag enables additional security checks of the certificates present in a certificate chain. It is not set by default. Starting from OpenSSL version 1.1.1h a check to disallow certificates in the chain that have explicitly encoded elliptic curve parameters was added as an additional strict check. An error in the implementation of this check meant that the result of a previous check to confirm that certificates in the chain are valid CA certificates was overwritten. This effectively bypasses the check that non-CA certificates must not be able to issue other certificates. If a "purpose" has been configured then there is a subsequent opportunity for checks that the certificate is a valid CA. All of the named "purpose" values implemented in libcrypto perform this check. Therefore, where a purpose is set the certificate chain will still be rejected even when the strict flag has been used. A purpose is set by default in libssl client and server certificate verifica

The X509_V_FLAG_X509_STRICT flag enables additional security checks of ...

inffast.c in zlib 1.2.8 might allow context-dependent attackers to have unspecified impact by leveraging improper pointer arithmetic.

inffast.c in zlib 1.2.8 might allow context-dependent attackers to have unspecified impact by leveraging improper pointer arithmetic.

inffast.c in zlib 1.2.8 might allow context-dependent attackers to have unspecified impact by leveraging improper pointer arithmetic.

inffast.c in zlib 1.2.8 might allow context-dependent attackers to hav ...

Уязвимость реализации алгоритма шифрования DSA (Digital Signature Algorithm) библиотеки OpenSSL, позволяющая нарушителю получить несанкционированный доступ к защищаемой информации

Уязвимость реализации алгоритма шифрования ECDSA библиотеки OpenSSL, позволяющая нарушителю получить несанкционированный доступ к защищаемой информации

Уязвимость функций DH_check(), DH_check_ex(), EVP_PKEY_param_check() библиотеки OpenSSL, позволяющая нарушителю вызвать отказ в обслуживании

Уязвимость процедуры AVX2 Montgomery библиотеки OpenSSL, позволяющая нарушителю получить несанкционированный доступ к защищаемой информации

Уязвимость функций DH_check(), DH_check_ex() или EVP_PKEY_param_check() библиотеки OpenSSL, позволяющая нарушителю вызвать отказ в обслуживании

Уязвимость процессоров Intel архитектур Skylake и Kaby Lake, связанная с ошибками реализации технологии одновременной многопоточности (SMT), позволяющая нарушителю раскрыть защищаемую информацию

Security update for openssl-1_0_0

Security update for openssl-1_1

Security update for openssl-1_0_0

Security update for openssl-1_1

Security update for openssl

Security update for openssl-1_0_0

Security update for openssl-1_1

Security update for openssl-1_0_0