CVE-2018-0049

Junos OS: Receipt of a specifically crafted malicious MPLS packet leads to a Junos kernel crash.

Description

A NULL Pointer Dereference vulnerability in Juniper Networks Junos OS allows an attacker to cause the Junos OS kernel to crash. Continued receipt of this specifically crafted malicious MPLS packet will cause a sustained Denial of Service condition. This issue require it to be received on an interface configured to receive this type of traffic. Affected releases are Juniper Networks Junos OS: 12.1X46 versions above and including 12.1X46-D76 prior to 12.1X46-D81 on SRX100, SRX110, SRX210, SRX220, SRX240m, SRX550m SRX650, SRX300, SRX320, SRX340, SRX345, SRX1500, SRX4100, SRX4200, SRX4600 and vSRX; 12.3R12-S10; 12.3X48 versions above and including 12.3X48-D66 prior to 12.3X48-D75 on SRX100, SRX110, SRX210, SRX220, SRX240m, SRX550m SRX650, SRX300, SRX320, SRX340, SRX345, SRX1500, SRX4100, SRX4200, SRX4600 and vSRX; 14.1X53-D47 on EX2200/VC, EX3200, EX3300/VC, EX4200, EX4300, EX4550/VC, EX4600, EX6200, EX8200/VC (XRE), QFX3500, QFX3600, QFX5100; 14.1X53 versions above and including 14.1X53-D115 prior to 14.1X53-D130 on QFabric System; 15.1 versions above and including 15.1F6-S10; 15.1R4-S9; 15.1R6-S6; 15.1 versions above and including 15.1R7 prior to 15.1R7-S2; 15.1X49 versions above and including 15.1X49-D131 prior to 15.1X49-D150 on SRX100, SRX110, SRX210, SRX220, SRX240m, SRX550m SRX650, SRX300, SRX320, SRX340, SRX345, SRX1500, SRX4100, SRX4200, SRX4600 and vSRX; 15.1X53 versions above 15.1X53-D233 prior to 15.1X53-D235 on QFX5200/QFX5110; 15.1X53 versions up to and including 15.1X53-D471 prior to 15.1X53-D590 on NFX150, NFX250; 15.1X53-D67 on QFX10000 Series; 15.1X53-D59 on EX2300/EX3400; 16.1 versions above and including 16.1R3-S8; 16.1 versions above and including 16.1R4-S9 prior to 16.1R4-S12; 16.1 versions above and including 16.1R5-S4; 16.1 versions above and including 16.1R6-S3 prior to 16.1R6-S6; 16.1 versions above and including 16.1R7 prior to 16.1R7-S2; 16.2 versions above and including 16.2R1-S6; 16.2 versions above and including 16.2R2-S5 prior to 16.2R2-S7; 17.1R1-S7; 17.1 versions above and including 17.1R2-S7 prior to 17.1R2-S9; 17.2R1-S6; 17.2 versions above and including 17.2R2-S4 prior to 17.2R2-S6; 17.2X75 versions above and including 17.2X75-D100 prior to X17.2X75-D101, 17.2X75-D110; 17.3 versions above and including 17.3R1-S4 on All non-SRX Series and SRX100, SRX110, SRX210, SRX220, SRX240m, SRX550m SRX650, SRX300, SRX320, SRX340, SRX345, SRX1500, SRX4100, SRX4200, SRX4600 and vSRX; 17.3 versions above and including 17.3R2-S2 prior to 17.3R2-S4 on All non-SRX Series and SRX100, SRX110, SRX210, SRX220, SRX240m, SRX550m SRX650, SRX300, SRX320, SRX340, SRX345, SRX1500, SRX4100, SRX4200, SRX4600 and vSRX; 17.3R3 on All non-SRX Series and SRX100, SRX110, SRX210, SRX220, SRX240m, SRX550m SRX650, SRX300, SRX320, SRX340, SRX345, SRX1500, SRX4100, SRX4200, SRX4600 and vSRX; 17.4 versions above and including 17.4R1-S3 prior to 17.4R1-S5 on All non-SRX Series and SRX100, SRX110, SRX210, SRX220, SRX240m, SRX550m SRX650, SRX300, SRX320, SRX340, SRX345, SRX1500, SRX4100, SRX4200, SRX4600 and vSRX; 17.4R2 on All non-SRX Series and SRX100, SRX110, SRX210, SRX220, SRX240m, SRX550m SRX650, SRX300, SRX320, SRX340, SRX345, SRX1500, SRX4100, SRX4200, SRX4600 and vSRX; 18.1 versions above and including 18.1R2 prior to 18.1R2-S3, 18.1R3 on All non-SRX Series and SRX100, SRX110, SRX210, SRX220, SRX240m, SRX550m SRX650, SRX300, SRX320, SRX340, SRX345, SRX1500, SRX4100, SRX4200, SRX4600 and vSRX; 18.2 versions above and including 18.2R1 prior to 18.2R1-S2, 18.2R1-S3, 18.2R2 on All non-SRX Series and SRX100, SRX110, SRX210, SRX220, SRX240m, SRX550m SRX650, SRX300, SRX320, SRX340, SRX345, SRX1500, SRX4100, SRX4200, SRX4600 and vSRX; 18.2X75 versions above and including 18.2X75-D5 prior to 18.2X75-D20.

Remediation

Solution:

  • The following software releases have been updated to resolve this specific issue: 12.1X46-D81, 12.3R12-S11, 12.3X48-D75, 14.1X53-D130, 14.1X53-D48, 15.1R7-S2, 15.1X49-D150, 5.1X53-D235, 15.1X53-D495, 15.1X53-D68, 15.1X53-D590, 16.1R4-S12, 16.1R6-S6, 16.1R7-S2, 16.1X65-D48, 16.2R2-S7, 16.2R3, 17.1R2-S9, 17.1R3, 17.2R1-S7, 17.2R2-S6, 17.2R3, 17.2X75-D101, 17.2X75-D110, 17.3R2-S4, 17.3R3-S1, 17.3R4, 17.4R1-S5, 17.4R2-S1, 17.4R3, 18.1R2-S3, 18.1R3, 18.2R1-S2, 18.2R1-S3, 18.2R2, 18.2X75-D20, 18.3R1, and all subsequent releases. Additionally, the following software releases have been re-released to the Juniper download pages to resolve this specific issue: 12.1X46-D76.1, 12.3X48-D70.4, 14.1X53-D47.6, 15.1F6-S10.11, 15.1R6-S6.2, 15.1R7.9, 15.1X49-D140.3, 15.1X53-D233.2, 15.1X53-D59.4, 15.1X53-D67.6, 16.1R6-S3.2, 16.1R7-S1.2, 16.1R7.8, 17.2X75-D100.6, 17.3R2-S2.2, 17.3R3.10, 17.4R1-S3.4, 18.1R2.6. Note: The final ".xy" numeric entry, for example the .4 in 12.3X48-D70.4, on a release in this notice is the respin release number. Customer's should check the respin release number on the version of Junos OS to confirm vulnerability.

Workaround:

  • Remove MPLS configuration stanza from interfaces at risk. There are no other available workarounds for this issue.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 1.22% Top 25%
Vendor Advisory juniper.net Vendor Advisory juniper.net
Affected: Juniper Networks Junos OS
Affected: Juniper Networks Junos OS
Affected: Juniper Networks Junos OS
Affected: Juniper Networks Junos OS
Affected: Juniper Networks Junos OS
Affected: Juniper Networks Junos OS
Affected: Juniper Networks Junos OS
Affected: Juniper Networks Junos OS
Affected: Juniper Networks Junos OS
Published at:
Updated at:

References

Link Tags
http://www.securityfocus.com/bid/105701 third party advisory vdb entry
https://kb.juniper.net/KB30092 vendor advisory
http://www.securitytracker.com/id/1041850 third party advisory vdb entry
https://kb.juniper.net/JSA10883 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-0049?
CVE-2018-0049 has been scored as a high severity vulnerability.
How to fix CVE-2018-0049?
To fix CVE-2018-0049: The following software releases have been updated to resolve this specific issue: 12.1X46-D81, 12.3R12-S11, 12.3X48-D75, 14.1X53-D130, 14.1X53-D48, 15.1R7-S2, 15.1X49-D150, 5.1X53-D235, 15.1X53-D495, 15.1X53-D68, 15.1X53-D590, 16.1R4-S12, 16.1R6-S6, 16.1R7-S2, 16.1X65-D48, 16.2R2-S7, 16.2R3, 17.1R2-S9, 17.1R3, 17.2R1-S7, 17.2R2-S6, 17.2R3, 17.2X75-D101, 17.2X75-D110, 17.3R2-S4, 17.3R3-S1, 17.3R4, 17.4R1-S5, 17.4R2-S1, 17.4R3, 18.1R2-S3, 18.1R3, 18.2R1-S2, 18.2R1-S3, 18.2R2, 18.2X75-D20, 18.3R1, and all subsequent releases. Additionally, the following software releases have been re-released to the Juniper download pages to resolve this specific issue: 12.1X46-D76.1, 12.3X48-D70.4, 14.1X53-D47.6, 15.1F6-S10.11, 15.1R6-S6.2, 15.1R7.9, 15.1X49-D140.3, 15.1X53-D233.2, 15.1X53-D59.4, 15.1X53-D67.6, 16.1R6-S3.2, 16.1R7-S1.2, 16.1R7.8, 17.2X75-D100.6, 17.3R2-S2.2, 17.3R3.10, 17.4R1-S3.4, 18.1R2.6. Note: The final ".xy" numeric entry, for example the .4 in 12.3X48-D70.4, on a release in this notice is the respin release number. Customer's should check the respin release number on the version of Junos OS to confirm vulnerability.
Is CVE-2018-0049 being actively exploited in the wild?
It is possible that CVE-2018-0049 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-0049?
CVE-2018-0049 affects Juniper Networks Junos OS, Juniper Networks Junos OS, Juniper Networks Junos OS, Juniper Networks Junos OS, Juniper Networks Junos OS, Juniper Networks Junos OS, Juniper Networks Junos OS, Juniper Networks Junos OS, Juniper Networks Junos OS.
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