CVE-2023-28979

Junos OS: In a 6PE scenario upon receipt of a specific IPv6 packet an integrity check fails

Description

An Improper Check for Unusual or Exceptional Conditions vulnerability in the kernel of Juniper Networks Junos OS allows an adjacent unauthenticated attacker to bypass an integrity check. In a 6PE scenario and if an additional integrity check is configured, it will fail to drop specific malformed IPv6 packets, and then these packets will be forwarded to other connected networks. This issue affects Juniper Networks Junos OS: All versions prior to 19.3R3-S7; 19.4 versions prior to 19.4R3-S9; 20.2 versions prior to 20.2R3-S7; 20.3 versions prior to 20.3R3-S5; 20.4 versions prior to 20.4R3-S4; 21.1 versions prior to 21.1R3-S3; 21.2 versions prior to 21.2R3-S2; 21.3 versions prior to 21.3R3-S1; 21.4 versions prior to 21.4R2-S1, 21.4R3; 22.1 versions prior to 22.1R2; 22.2 versions prior to 22.2R2.

Remediation

Solution:

  • The following software releases have been updated to resolve this specific issue: 19.3R3-S7, 19.4R3-S9, 20.2R3-S7, 20.3R3-S5, 20.4R3-S4, 21.1R3-S3, 21.2R3-S2, 21.3R3-S1, 21.4R2-S1, 21.4R3, 22.1R2, 22.2R2, 22.3R1, and all subsequent releases.

Workaround:

  • There are no known workarounds for this issue.

Category

4.7
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.02%
Vendor Advisory juniper.net
Affected: Juniper Networks Junos OS
Published at:
Updated at:

References

Link Tags
https://supportportal.juniper.net/JSA70604 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2023-28979?
CVE-2023-28979 has been scored as a medium severity vulnerability.
How to fix CVE-2023-28979?
To fix CVE-2023-28979: The following software releases have been updated to resolve this specific issue: 19.3R3-S7, 19.4R3-S9, 20.2R3-S7, 20.3R3-S5, 20.4R3-S4, 21.1R3-S3, 21.2R3-S2, 21.3R3-S1, 21.4R2-S1, 21.4R3, 22.1R2, 22.2R2, 22.3R1, and all subsequent releases.
Is CVE-2023-28979 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-28979 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-28979?
CVE-2023-28979 affects Juniper Networks Junos OS.
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