CVE-2017-1000385 Information

Description

The Erlang otp TLS server answers with different TLS alerts to different error types in the RSA PKCS 1 1.5 padding. This allows an attacker to decrypt content or sign messages with the server’s private key (this is a variation of the Bleichenbacher attack).

CVSS Vector

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Reference

http://erlang.org/pipermail/erlang-questions/2017-November/094255.html http://erlang.org/pipermail/erlang-questions/2017-November/094256.html http://erlang.org/pipermail/erlang-questions/2017-November/094257.html http://www.securityfocus.com/bid/102197 https://access.redhat.com/errata/RHSA-2018:0242 https://access.redhat.com/errata/RHSA-2018:0303 https://access.redhat.com/errata/RHSA-2018:0368 https://access.redhat.com/errata/RHSA-2018:0528 https://lists.debian.org/debian-lts-announce/2017/12/msg00010.html https://robotattack.org/ https://usn.ubuntu.com/3571-1/ https://www.debian.org/security/2017/dsa-4057 https://www.kb.cert.org/vuls/id/144389

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

5.9