CVE-2017-1000385

Publication date 12 December 2017

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

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).

Status

Show unmaintained releases

Package	Ubuntu Release	Status
erlang	17.10 artful	Fixed 1:20.0.4+dfsg-1ubuntu1.1
	17.04 zesty	Ignored end of life
	16.04 LTS xenial	Fixed 1:18.3-dfsg-1ubuntu3.1
	14.04 LTS trusty	Fixed 1:16.b.3-dfsg-1ubuntu2.2

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
erlang	Upstream: 38b07ca Upstream: 3b4386d Upstream: de3b9cd

Severity score breakdown

Parameter	Value
Base score	5.9 · Medium
Attack vector	Network
Attack complexity	High
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	None
Availability impact	None
Vector	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

References

Related Ubuntu Security Notices (USN)

USN-3571-1
Erlang vulnerabilities
14 February 2018