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High severity7.5NVD Advisory· Published Apr 14, 2022· Updated Jun 17, 2026

CVE-2022-22198

CVE-2022-22198

Description

An Access of Uninitialized Pointer vulnerability in the SIP ALG of Juniper Networks Junos OS allows an unauthenticated network-based attacker to cause a Denial of Service (DoS). Continued receipt of these specific packets will cause a sustained Denial of Service condition. On all MX and SRX platforms, if the SIP ALG is enabled, an MS-MPC or MS-MIC, or SPC will crash if it receives a SIP message with a specific contact header format. This issue affects Juniper Networks Junos OS on MX Series and SRX Series: 20.4 versions prior to 20.4R3; 21.1 versions prior to 21.1R2-S1, 21.1R3; 21.2 versions prior to 21.2R2. This issue does not affect versions prior to 20.4R1.

Affected products

15
  • Juniper Networks/Junos13 versions
    cpe:2.3:o:juniper:junos:20.4:r1-s1:*:*:*:*:*:*+ 12 more
    • cpe:2.3:o:juniper:junos:20.4:r1-s1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:20.4:r1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:20.4:r2-s1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:20.4:r2-s2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:20.4:r2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:21.1:r1-s1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:21.1:r1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:21.1:r2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:21.2:r1-s1:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:21.2:r1-s2:*:*:*:*:*:*
    • cpe:2.3:o:juniper:junos:21.2:r1:*:*:*:*:*:*
    • (no CPE)range: 20.4 versions prior to 20.4R3; 21.1 versions prior to 21.1R2-S1, 21.1R3; 21.2 versions prior to 21.2R2; not before 20.4R1
    • (no CPE)range: 20.4
  • Juniper Networks/MX Seriesllm-fuzzy
    Range: 20.4 versions prior to 20.4R3; 21.1 versions prior to 21.1R2-S1, 21.1R3; 21.2 versions prior to 21.2R2; not before 20.4R1
  • Juniper Networks/SRX Seriesllm-fuzzy
    Range: 20.4 versions prior to 20.4R3; 21.1 versions prior to 21.1R2-S1, 21.1R3; 21.2 versions prior to 21.2R2; not before 20.4R1

Patches

Vulnerability mechanics

References

1

News mentions

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