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AUSCERT External Security Bulletin Redistribution
ESB-2022.0158
JSA11270 - 2022-01 Security Bulletin: Junos OS: A low privileged user can
elevate their privileges to the ones of the highest
privileged j-web user logged in (CVE-2022-22162)
13 January 2022
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AusCERT Security Bulletin Summary
---------------------------------
Product: Junos OS
Publisher: Juniper Networks
Operating System: Juniper
Impact/Access: Increased Privileges -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2022-22162
Original Bulletin:
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA11270
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2022-01 Security Bulletin: Junos OS: A low privileged user can elevate their privileges to the ones of the highest privileged j-web user logged in (CVE-2022-22162)
Article ID : JSA11270
Last Updated: 12 Jan 2022
Version : 1.0
Product Affected:
This issue affects all versions of Junos OS.
Problem:
A Generation of Error Message Containing Sensitive Information vulnerability in
the CLI of Juniper Networks Junos OS allows a locally authenticated attacker
with low privileges to elevate these to the level of any other user logged in
via J-Web at this time, potential leading to a full compromise of the device.
This issue affects Juniper Networks Junos OS:
o All versions prior to 15.1R7-S11;
o 18.3 versions prior to 18.3R3-S6;
o 18.4 versions prior to 18.4R2-S9, 18.4R3-S10;
o 19.1 versions prior to 19.1R2-S3, 19.1R3-S7;
o 19.2 versions prior to 19.2R1-S8, 19.2R3-S4;
o 19.3 versions prior to 19.3R3-S4;
o 19.4 versions prior to 19.4R3-S6;
o 20.1 versions prior to 20.1R3-S2;
o 20.2 versions prior to 20.2R3-S3;
o 20.3 versions prior to 20.3R3-S1;
o 20.4 versions prior to 20.4R3-S1;
o 21.1 versions prior to 21.1R2-S1, 21.1R3;
o 21.2 versions prior to 21.2R1-S1, 21.2R2.
This issue can only be exploited if J-Web is configured with:
[system services web-management http]
or
[system services web-management https]
Juniper SIRT is not aware of any malicious exploitation of this vulnerability.
This issue was discovered during external security research.
This issue has been assigned CVE-2022-22162 .
Solution:
The following software releases have been updated to resolve this specific
issue: 15.1R7-S11, 18.3R3-S6, 18.4R2-S9, 18.4R3-S10, 19.1R2-S3, 19.1R3-S7,
19.2R1-S8, 19.2R3-S4, 19.3R3-S4, 19.4R3-S6, 20.1R3-S2, 20.2R3-S3, 20.3R3-S1,
20.4R3-S1, 21.1R2-S1, 21.1R3, 21.2R1-S1, 21.2R2, 21.3R1, and all subsequent
releases.
This issue is being tracked as 1593200 .
Workaround:
There are no viable workarounds for this issue other than disabling J-Web.
To reduce the risk of exploitation of this issue, use access lists or firewall
filters to limit access to only trusted administrative networks, hosts and
users.
Implementation:
Software releases or updates are available for download at https://
support.juniper.net/support/downloads/
Modification History:
2022-01-12: Initial Publication.
CVSS Score:
7.3 (CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H)
Severity Level:
High
Severity Assessment:
Information for how Juniper Networks uses CVSS can be found at KB 16446 "Common
Vulnerability Scoring System (CVSS) and Juniper's Security Advisories."
Acknowledgements:
The Juniper SIRT would like to acknowledge and thank Andy Coles of Microsoft
MSRC Vulnerabilities and Mitigations Team for responsibly reporting this issue.
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