Juniper Junos SRX MACsec Feature Secure Link Failure Silent Fallback Information Disclosure (JSA10790)

Medium Nessus Plugin ID 102703

Synopsis

The remote device is missing a vendor-supplied security patch.

Description

According to its self-reported version and model number, the remote Juniper Junos device is affected by an information disclosure vulnerability in the MACsec feature due to error reporting over an unencrypted link when a secure link cannot be established. An adjacent attacker can exploit this to disclose or manipulate error information.

Solution

Upgrade to the relevant Junos software release referenced in Juniper security advisory JSA10790.

See Also

https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10790

Plugin Details

Severity: Medium

ID: 102703

File Name: juniper_jsa10790.nasl

Version: 1.3

Type: combined

Published: 2017/08/23

Modified: 2018/07/12

Dependencies: 55932

Risk Information

Risk Factor: Medium

CVSSv2

Base Score: 4.8

Temporal Score: 3.5

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSSv3

Base Score: 5.4

Temporal Score: 4.7

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:juniper:junos

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

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2017/07/12

Vulnerability Publication Date: 2017/07/12

Reference Information

CVE: CVE-2017-2342

JSA: JSA10790