CVE-2019-1563

Summary

In situations where an attacker receives automated notification of the success or failure of a decryption attempt an attacker, after sending a very large number of messages to be decrypted, can recover a CMS/PKCS7 transported encryption key or decrypt any RSA encrypted message that was encrypted with the public RSA key, using a Bleichenbacher padding oracle attack. Applications are not affected if they use a certificate together with the private RSA key to the CMS_decrypt or PKCS7_decrypt functions to select the correct recipient info to decrypt. Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c). Fixed in OpenSSL 1.1.0l (Affected 1.1.0-1.1.0k). Fixed in OpenSSL 1.0.2t (Affected 1.0.2-1.0.2s).

Affected Software

VendorProductVersion RangeStatus
OpenSSLOpenSSLFixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c)affected
OpenSSLOpenSSLFixed in OpenSSL 1.1.0l (Affected 1.1.0-1.1.0k)affected
OpenSSLOpenSSLFixed in OpenSSL 1.0.2t (Affected 1.0.2-1.0.2s)affected

Weaknesses

  • Padding Oracle

ADP Enrichment

CVE Program Container

Additional References

References