SARA / Free Tools / CVE / CVE-2018-0031

CVE-2018-0031 — Receipt of specially crafted UDP/IP packets over MPLS may be able to bypass a st

Receipt of specially crafted UDP/IP packets over MPLS may be able to bypass a stateless firewall filter. The crafted UDP packets must be encapsulated and meet a very specific packet format to be classified in a way that bypasses IP firewall filter rules. The packets themselves do

CVSS
5.3 MEDIUM
EPSS
0.19% (top 59.40%)
CWE
—
Published
2018-07-11T18:00:00.000Z
Last modified
2024-09-17T02:21:45.758Z
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

01What is this vulnerability?

Receipt of specially crafted UDP/IP packets over MPLS may be able to bypass a stateless firewall filter. The crafted UDP packets must be encapsulated and meet a very specific packet format to be classified in a way that bypasses IP firewall filter rules. The packets themselves do not cause a service interruption (e.g. RPD crash), but receipt of a high rate of UDP packets may be able to contribute…

02Affected products

VendorProductVersions
Juniper NetworksJunos OS12.1X46, 12.3X48, 15.1X49
Juniper NetworksJunos OS12.3, 15.1, 16.1, 16.2, 17.1, 17.2, 17.2X75, 17.3, 17.4, 18.1, 18.2X75
Juniper NetworksJunos OS14.1X53
Juniper NetworksJunos OS15.1X53
Juniper NetworksJunos OS15.1X53
Juniper NetworksJunos OS15.1X53
Juniper NetworksJunos OS15.1X53

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

09References

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