CVE-2017-1000385

medium

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).

References

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

Details

Source: MITRE

Published: 2017-12-12

Updated: 2019-10-03

Type: CWE-203

Risk Information

CVSS v2

Base Score: 4.3

Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N

Impact Score: 2.9

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3

Base Score: 5.9

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

Impact Score: 3.6

Exploitability Score: 2.2

Severity: MEDIUM