CVE-2019-1563

NameCVE-2019-1563
DescriptionIn 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).
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
openssl (PTS)jessie1.0.1t-1+deb8u8vulnerable
jessie (security)1.0.1t-1+deb8u11vulnerable
stretch (security), stretch1.1.0k-1~deb9u1vulnerable
buster, bullseye1.1.1c-1vulnerable
sid1.1.1d-1fixed
openssl1.0 (PTS)stretch (security), stretch1.0.2s-1~deb9u1vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
opensslsource(unstable)1.1.1d-1medium
openssl1.0source(unstable)(unfixed)medium

Notes

https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=08229ad838c50f644d7e928e2eef147b4308ad64 (OpenSSL_1_1_1d)
https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=631f94db0065c78181ca9ba5546ebc8bb3884b97 (OpenSSL_1_1_0l)
https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=e21f8cf78a125cd3c8c0d1a1a6c8bb0b901f893f (OpenSSL_1_0_2t)
https://www.openssl.org/news/secadv/20190910.txt

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