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Juniper Junos Key Generation Weakness (PSN-2012-04-549)

medium Nessus Plugin ID 58878

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Synopsis

The remote device generates weak cryptographic keys.

Description

According to its self-reported version and model number, the remote Junos device generates weak cryptographic keys for SSL and SSH. Due to a lack of entropy in the initial certificate creation, duplicate keys may be created on multiple devices. An attacker with knowledge of these keys would allow a man in the middle attacker to decrypt SSL or SSH traffic.

Note that self-signed SSL certificates are affected, while SSL certificates signed by a trusted certificate authority are not.

Solution

Apply the relevant Junos upgrade referenced in Juniper advisory PSN-2012-04-549. After upgrading, all self-signed SSL certificates and SSH public/private keys need to be regenerated.

See Also

http://www.nessus.org/u?b2ca6f92

http://www.nessus.org/u?68a256ed

Plugin Details

Severity: Medium

ID: 58878

File Name: juniper_psn-2012-04-549.nasl

Version: 1.9

Type: combined

Published: 4/25/2012

Updated: 8/8/2018

Supported Sensors: Nessus

Risk Information

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3

Vector: CVSS2#AV:N/AC:H/Au:N/C:P/I:P/A:N

Vulnerability Information

CPE: cpe:/o:juniper:junos

Required KB Items: Host/Juniper/model, Host/Juniper/JUNOS/Version

Patch Publication Date: 4/11/2012

Vulnerability Publication Date: 4/11/2012