Erlang otp TLS Server 1.5 RSA PKCS Padding cryptographic issues

CVSS Meta Temp Score
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5.6$0-$5k0.00

A vulnerability classified as critical was found in Erlang otp TLS Server 1.5. Affected by this vulnerability is an unknown code block of the component RSA PKCS Padding. The manipulation with an unknown input leads to a cryptographic issues vulnerability. The CWE definition for the vulnerability is CWE-310. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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).

The bug was discovered 12/12/2017. The weakness was released 12/12/2017 by Juraj Somorovsky with Tripwire VERT (Website). The advisory is shared at erlang.org. This vulnerability is known as CVE-2017-1000385 since 11/29/2017. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1600 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 105241 (openSUSE Security Update : erlang (openSUSE-2017-1358) (ROBOT)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 170602 (OpenSUSE Security Update for erlang (openSUSE-SU-2017:3257-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (105241).

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CPE 2.3info

CPE 2.2info

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CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.6

VulDB Base Score: 5.6
VulDB Temp Score: 5.4
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NVD Base Score: 5.9
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CVSSv2info

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Exploitinginfo

Class: Cryptographic issues
CWE: CWE-310
ATT&CK: T1600

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 105241
Nessus Name: openSUSE Security Update : erlang (openSUSE-2017-1358) (ROBOT)
Nessus File: 🔍
Nessus Risk: 🔍
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OpenVAS ID: 881538
OpenVAS Name: Fedora Update for erlang FEDORA-2017-9e6df1e099
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
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Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/29/2017 🔍
12/08/2017 +9 days 🔍
12/12/2017 +4 days 🔍
12/12/2017 +0 days 🔍
12/12/2017 +0 days 🔍
12/12/2017 +0 days 🔍
12/13/2017 +1 days 🔍
12/14/2017 +1 days 🔍
01/17/2023 +1860 days 🔍

Sourcesinfo

Advisory: RHSA-2018:0242
Researcher: Juraj Somorovsky
Organization: Tripwire VERT
Status: Not defined

CVE: CVE-2017-1000385 (🔍)
OVAL: 🔍

SecurityFocus: 102197 - Erlang/OTP CVE-2017-1000385 Information Disclosure Vulnerability

Entryinfo

Created: 12/13/2017 08:08
Updated: 01/17/2023 13:44
Changes: 12/13/2017 08:08 (72), 12/14/2019 09:02 (7), 01/17/2023 13:44 (4)
Complete: 🔍

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