Published:
12 April 2019
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AUSCERT External Security Bulletin Redistribution
ESB-2019.1269
JSA10930 - 2019-04 Security Bulletin: QFX5000 Series, EX4300, EX4600: A
stack buffer overflow vulnerability in Packet Forwarding
Engine manager (FXPC) process (CVE-2019-0008)
12 April 2019
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AusCERT Security Bulletin Summary
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Product: Juniper QFX5000
Juniper EX4300
Juniper EX4600
Publisher: Juniper Networks
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2019-0008
Original Bulletin:
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10930
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2019-04 Security Bulletin: QFX5000 Series, EX4300, EX4600: A stack buffer overflow vulnerability in Packet Forwarding Engine manager (FXPC) process (CVE-2019-0008)
Article ID: JSA10930
Last Updated: 11 Apr 2019
Version: 3.0
Product Affected:
This issue affects Junos OS 14.1X53, 15.1X53, 17.1, 17.2, 17.3, 17.4, 18.1,
18.2, 18.2X75, 18.3 on QFX5000 series, EX4300, EX4600.
Problem:
A certain sequence of valid BGP or IPv6 BFD packets may trigger a stack based
buffer overflow in the Junos OS Packet Forwarding Engine manager (FXPC) process
on QFX5000 series, EX4300, EX4600 devices. This issue can result in a crash of
the fxpc daemon or may potentially lead to remote code execution.
Affected releases are Juniper Networks Junos OS on QFX5000 series, EX4300,
EX4600 are:
o 14.1X53 versions prior to 14.1X53-D51;
o 15.1X53 versions prior to 15.1X53-D235;
o 17.1 versions prior to 17.1R3;
o 17.2 versions prior to 17.2R3;
o 17.3 versions prior to 17.3R3-S2;
o 17.4 versions prior to 17.4R2-S1, 17.4R3;
o 18.1 versions prior to 18.1R3-S1;
o 18.2 versions prior to 18.2R2;
o 18.2X75 versions prior to 18.2X75-D30;
o 18.3 versions prior to 18.3R2.
Juniper SIRT is not aware of any malicious exploitation of this vulnerability.
This issue was seen during production usage.
This issue has been assigned CVE-2019-0008 .
Solution:
The following software releases have been updated to resolve this specific
issue: 14.1X53-D51, 15.1X53-D235, 17.1R3, 17.2R3, 17.3R3-S2, 17.4R2-S1, 17.4R3,
18.1R3-S1, 18.2R2, 18.2X75-D30, 18.3R2, 18.4R1, and all subsequent releases.
This issue is being tracked as PR 1371400 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:
There are no viable workarounds for this issue.
Implementation:
Software Releases, patches and updates are available at https://www.juniper.net
/support/downloads/ .
Modification History:
o 2019-04-10: Initial Publication.
o 2019-04-11: add 14.1X53-D51, remove 17.3R4, 18.1R4 from fixed releases.
Related Links:
o KB16613: Overview of the Juniper Networks SIRT Quarterly Security Bulletin
Publication Process.
o KB16765: In which releases are vulnerabilities fixed
o KB16446: Common Vulnerability Scoring System (CVSS) and Juniper's Security
Advisories
o Report a Security Vulnerability - How to Contact the Juniper Networks
Security Incident Response Team
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."
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