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AUSCERT External Security Bulletin Redistribution
ESB-2018.1120
Junos OS: Kernel crash upon receipt of crafted CLNP packets (CVE-2018-0016)
12 April 2018
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AusCERT Security Bulletin Summary
---------------------------------
Product: Junos OS
Publisher: Juniper Networks
Operating System: Juniper
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2018-0016
Original Bulletin:
https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10844
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2018-04 Security Bulletin: Junos OS: Kernel crash upon receipt of crafted CLNP
packets (CVE-2018-0016)
CVSS Score: 9.8 (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
Risk Level: Critical
Risk Assessment: Information for how Juniper Networks uses CVSS can be found at
KB 16446 "Common Vulnerability Scoring System (CVSS) and Juniper's Security
Advisories."
Product Affected:
This issue affects Junos OS 15.1, 15.1X49, 15.1X53.
Problem:
Receipt of a specially crafted Connectionless Network Protocol (CLNP) packet
destined to an interface IP address of a Junos OS device may result in a kernel
crash or lead to remote code execution.
Devices are only vulnerable to the specially crafted CLNP packet if
'clns-routing' or ESIS is explicitly configured. Devices without CLNS enabled
are not vulnerable to this issue.
This issue only affects devices running Junos OS 15.1. Affected releases are
Juniper Networks Junos OS:
15.1 versions prior to 15.1F5-S3, 15.1F6-S8, 15.1F7, 15.1R5;
15.1X49 versions prior to 15.1X49-D60;
15.1X53 versions prior to 15.1X53-D66, 15.1X53-D233, 15.1X53-D471.
Earlier releases are unaffected by this vulnerability, and the issue has been
resolved in Junos OS 16.1R1 and all subsequent releases.
The following configuration is required:
set protocols isis clns-routing
Juniper SIRT is not aware of any malicious exploitation of this vulnerability.
This issue was found during internal product security testing or research.
This issue has been assigned CVE-2018-0016.
Solution:
The following software releases have been updated to resolve this specific
issue: 15.1F5-S3, 15.1F6-S8, 15.1F7, 15.1R5, 15.1X49-D60, 15.1X53-D66,
15.1X53-D233, 15.1X53-D471, 16.1R1, and all subsequent releases.
This issue is being tracked as 1167683 which is visible on the Customer Support
website.
Note: Juniper SIRT's policy is not to evaluate releases which are beyond End of
Engineering (EOE) or End of Life (EOL).
Workaround:
Use access lists or firewall filters to limit access to the device via CLNP only
from trusted hosts.
Implementation:
Software Releases, patches and updates are available at
https://www.juniper.net/support/downloads/.
Modification History:
2018-04-11: Initial Publication
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