CVE-2022-22206

Junos OS: SRX series: The PFE will crash when specific traffic is scanned by Enhanced Web Filtering safe-search

Description

A Buffer Overflow vulnerability in the PFE of Juniper Networks Junos OS on SRX series allows an unauthenticated network based attacker to cause a Denial of Service (DoS). The PFE will crash when specific traffic is scanned by Enhanced Web Filtering safe-search feature of UTM (Unified Threat management). Continued receipt of this specific traffic will create a sustained Denial of Service (DoS) condition. This issue affects Juniper Networks Junos OS: 20.2 versions prior to 20.2R3-S4 on SRX Series; 20.3 versions prior to 20.3R3-S3 on SRX Series; 20.4 versions prior to 20.4R3-S3 on SRX Series; 21.1 versions prior to 21.1R3-S1 on SRX Series; 21.2 versions prior to 21.2R2-S2, 21.2R3 on SRX Series; 21.3 versions prior to 21.3R2 on SRX Series; 21.4 versions prior to 21.4R2 on SRX Series. This issue does not affect Juniper Networks Junos OS versions prior to 20.2R1.

Remediation

Solution:

  • The following software releases have been updated to resolve this specific issue: 20.2R3-S4, 20.3R3-S3, 20.4R3-S3, 21.1R3-S1, 21.2R2-S2, 21.2R3, 21.3R2, 21.4R2, 22.1R1, and all subsequent releases. Note: Only those releases listed in the PROBLEM section above are affected. This fix has also been proactively committed into other releases that are not vulnerable to this issue.

Workaround:

  • Disable UTM EWF safe-search by adding the no-safe-search config. Example: set security utm default-configuration web-filtering juniper-enhanced no-safe-search set security utm feature-profile web-filtering juniper-enhanced profile test-profile no-safe-search

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.59%
Vendor Advisory juniper.net
Affected: Juniper Networks Junos OS
Affected: Juniper Networks Junos OS
Published at:
Updated at:

References

Link Tags
https://kb.juniper.net/JSA69710 vendor advisory mailing list mitigation

Frequently Asked Questions

What is the severity of CVE-2022-22206?
CVE-2022-22206 has been scored as a high severity vulnerability.
How to fix CVE-2022-22206?
To fix CVE-2022-22206: The following software releases have been updated to resolve this specific issue: 20.2R3-S4, 20.3R3-S3, 20.4R3-S3, 21.1R3-S1, 21.2R2-S2, 21.2R3, 21.3R2, 21.4R2, 22.1R1, and all subsequent releases. Note: Only those releases listed in the PROBLEM section above are affected. This fix has also been proactively committed into other releases that are not vulnerable to this issue.
Is CVE-2022-22206 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-22206 is being actively exploited. 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-2022-22206?
CVE-2022-22206 affects Juniper Networks Junos OS, Juniper Networks Junos OS.
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