CVE-2022-22206

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

HIGH

7.5

CVSS Score

Published: July 20, 2022 at 02:13 PM UTC

Updated: June 17, 2026 at 04:28 AM UTC

28 products affected across 2 vendorsJunosSRX5600SRX5800

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Severity

HIGH7.5

Exploit prediction

EPSS 0.8%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Junos · Juniper Networks

95%

20.2 ≤ v < 20.2R3-S420.3 ≤ v < 20.3R3-S320.4 ≤ v < 20.4R3-S321.1 ≤ v < 21.1R3-S121.2 ≤ v < 21.2R2-S2, 21.2R321.3 ≤ v < 21.3R221.4 ≤ v < 21.4R220.2 20.2 r1 20.2 r1-s1 20.2 r1-s2 20.2 r1-s3 20.2 r2 20.2 r2-s1 20.2 r2-s2 20.2 r2-s3 20.2 r3 20.2 r3-s1 20.2 r3-s2 20.2 r3-s3 20.3 20.3 r1 20.3 r1-s1 20.3 r1-s2 20.3 r2 20.3 r2-s1 20.3 r3 20.3 r3-s1 20.3 r3-s2 20.4 20.4 r1 20.4 r1-s1 20.4 r2 20.4 r2-s1 20.4 r2-s2 20.4 r3 20.4 r3-s1 20.4 r3-s2 21.1 21.1 r1 21.1 r1-s1 21.1 r2 21.1 r2-s1 21.1 r2-s2 21.1 r3 21.2 21.2 r1 21.2 r1-s1 21.2 r1-s2 21.2 r2 21.2 r2-s1 21.3 21.3 r1 21.3 r1-s1 21.3 r1-s2 21.4 21.4 r1 21.4 r1-s1 21.4 r1-s2

Vendor states this is fixed in 20.2R1 (unaffected)

Affected range stops below 20.2R3-S4, so it looks safe — our inference, not a vendor statement

Affected range stops below 20.3R3-S3, so it looks safe — our inference, not a vendor statement

Affected range stops below 20.4R3-S3, so it looks safe — our inference, not a vendor statement

Affected range stops below 21.1R3-S1, so it looks safe — our inference, not a vendor statement

Affected range stops below 21.2R2-S2, 21.2R3, so it looks safe — our inference, not a vendor statement

Affected range stops below 21.3R2, so it looks safe — our inference, not a vendor statement

Affected range stops below 21.4R2, so it looks safe — our inference, not a vendor statement

juniper-srx100 (environment) · juniper-srx110 (environment) · juniper-srx1400 (environment) · juniper-srx1500 (environment) · juniper-srx210 (environment) · juniper-srx220 (environment) · juniper-srx240 (environment) · juniper-srx240h2 (environment) · juniper-srx300 (environment) · juniper-srx320 (environment) · juniper-srx340 (environment) · juniper-srx3400 (environment) · juniper-srx345 (environment) · juniper-srx3600 (environment) · juniper-srx380 (environment) · juniper-srx4000 (environment) · juniper-srx4100 (environment) · juniper-srx4200 (environment) · juniper-srx4600 (environment) · juniper-srx5000 (environment) · juniper-srx5400 (environment) · juniper-srx550 (environment) · juniper-srx550-hm (environment) · juniper-srx550m (environment) · juniper-srx5600 (environment) · juniper-srx5800 (environment) · juniper-srx650 (environment)

SRX100 · Juniperdevice

80%

All versions

SRX110 · Juniperdevice

80%

All versions

SRX1400 · Juniperdevice

80%

All versions

Srx1500 · Juniperdevice

80%

All versions