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Juniper Junos OS Multiple Vulnerabilities (JSA79102)

high Nessus Plugin ID 193214

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Synopsis

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

Description

The version of Junos OS installed on the remote host is affected by multiple vulnerabilities as referenced in the JSA79102 advisory.

 - An issue was discovered in libslax through v0.22.1. slaxLexer() in slaxlexer.c has a stack-based buffer overflow. (CVE-2021-39531)

 - An issue was discovered in libslax through v0.22.1. slaxLexer() in slaxlexer.c has a heap-based buffer overflow. (CVE-2021-39533)

 - An issue was discovered in libslax through v0.22.1. slaxIsCommentStart() in slaxlexer.c has a heap-based buffer overflow. (CVE-2021-39534)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Apply the relevant Junos software release referenced in Juniper advisory JSA79102

See Also

http://www.nessus.org/u?31c1dc6a

Plugin Details

Severity: High

ID: 193214

File Name: juniper_jsa79102.nasl

Version: 1.3

Type: combined

Published: 4/11/2024

Updated: 10/29/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

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

CVSS Score Source: CVE-2021-39534

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.9

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

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

CVSS v4

Risk Factor: High

Base Score: 8.6

Threat Score: 7.3

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

CPE: cpe:/o:juniper:junos

Required KB Items: Host/Juniper/JUNOS/Version

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 4/10/2024

Vulnerability Publication Date: 9/20/2021

Reference Information

CVE: CVE-2021-39531, CVE-2021-39533, CVE-2021-39534

IAVA: 2024-A-0232

JSA: JSA79102