CVE-2019-1563 Information

Description

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).

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Reference

http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00054.html http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00072.html http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00012.html http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00016.html http://packetstormsecurity.com/files/154467/Slackware-Security-Advisory-openssl-Updates.html https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=08229ad838c50f644d7e928e2eef147b4308ad64 https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=631f94db0065c78181ca9ba5546ebc8bb3884b97 https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=e21f8cf78a125cd3c8c0d1a1a6c8bb0b901f893f https://lists.debian.org/debian-lts-announce/2019/09/msg00026.html https://lists.fedoraproject.org/archives/list/[email protected]/message/GY6SNRJP2S7Y42GIIDO3HXPNMDYN2U3A/ https://lists.fedoraproject.org/archives/list/[email protected]/message/ZN4VVQJ3JDCHGIHV4Y2YTXBYQZ6PWQ7E/ https://seclists.org/bugtraq/2019/Oct/0 https://seclists.org/bugtraq/2019/Oct/1 https://seclists.org/bugtraq/2019/Sep/25 https://security.gentoo.org/glsa/201911-04 https://security.netapp.com/advisory/ntap-20190919-0002/ https://support.f5.com/csp/article/K97324400?utm_source=f5support&utm_medium=RSS https://usn.ubuntu.com/4376-1/ https://usn.ubuntu.com/4376-2/ https://usn.ubuntu.com/4504-1/ https://www.debian.org/security/2019/dsa-4539 https://www.debian.org/security/2019/dsa-4540 https://www.openssl.org/news/secadv/20190910.txt https://www.oracle.com/security-alerts/cpuapr2020.html https://www.oracle.com/security-alerts/cpujan2020.html https://www.oracle.com/security-alerts/cpujul2020.html https://www.oracle.com/security-alerts/cpuoct2020.html https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html https://www.tenable.com/security/tns-2019-09

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

NONE

Base Score

NONE

Base Severity

3.7