#VU21700 Session Fixation in Juniper Junos OS - CVE-2019-0062

Vulnerability identifier: #VU21700

Vulnerability risk: Medium

CVSSv4.0: 4.8 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-0062

CWE-ID: CWE-384

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Juniper Junos OS
Operating systems & Components / Operating system

Vendor: Juniper Networks, Inc.

Description

The vulnerability allows a remote attacker to steal authenticated sessions.

The vulnerability exists in the J-Web due to the the affected software does not invalidate the previous session and create a new one upon successful login. A remote attacker can use social engineering techniques to fix and hijack a J-Web administrators web session and gain administrative access to the device.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: 12.3R10 - 12.3X48-D80, 14.1X53-D15 - 14.1X53-D50, 15.1R - 15.1X53-D237, 16.1R - 16.1R4, 16.2R1-S1 - 16.2R2, 17.1R1-S1 - 17.1R3, 17.2R1-S1 - 17.2R2, 17.3R1-S1 - 17.3R3, 17.4R1-S1 - 17.4R2, 18.1R1 - 18.1R3, 18.2R1-S3 - 18.2R2, 18.3R1-S1 - 18.3R2, 18.4R1-S1 - 18.4R1, 19.1R1-S1 - 19.1R1

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External links
https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10961&cat=SIRT_1&actp=LIST

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.