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CVE
PUBLISHED

CVE-2024-39540

Junos OS: SRX Series, and MX Series with SPC3: Specific valid TCP traffic can cause a pfe crash

Assignerjuniper
Reserved2024-06-25
Published2024-07-11
Updated2024-07-11

Description

An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (pfe) of Juniper Networks Junos OS on SRX Series, and MX Series with SPC3 allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS). When an affected device receives specific valid TCP traffic, the pfe crashes and restarts leading to a momentary but complete service outage. This issue affects Junos OS: 21.2 releases from 21.2R3-S5 before 21.2R3-S6. This issue does not affect earlier or later releases.



HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L

Problem types

CWE-754 Improper Check for Unusual or Exceptional Conditions

Product status

Default status
unaffected

21.2R3-S5 before 21.2R3-S6
affected

References

https://supportportal.juniper.net/JSA83000 vendor-advisory

cve.org CVE-2024-39540

nvd.nist.gov CVE-2024-39540

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