Home/CVE/An Improper Validation of Specified Index, Position, or Offset in Input vulnerability in the Packet Forwarding Engine (P
CVE

CVE-2022-22201

An Improper Validation of Specified Index, Position, or Offset in Input vulnerability in the Packet Forwarding Engine (P

An Improper Validation of Specified Index, Position, or Offset in Input vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows an unauthenticated network-based attacker to cause a Denial of Service (DoS). On SRX5000 Series with SPC3, SRX4000 Series, and vSRX, when PowerMode IPsec is configured and a malformed ESP packet matching an established IPsec tunnel is received the PFE crashes. This issue affects Juniper Networks Junos OS on SRX5000 Series with SPC3, SRX4000 Series, and vSRX: All versions prior to 19.4R2-S6, 19.4R3-S7.

20.1 versions prior to 20.1R3-S3.

20.2 versions prior to 20.2R3-S4.

20.3 versions prior to 20.3R3-S3.

20.4 versions prior to 20.4R3-S2.

21.1 versions prior to 21.1R3.

21.2 versions prior to 21.2R3.

21.3 versions prior to 21.3R1-S2, 21.3R2.

HIGH · CVSS 7.5 EPSS 0.00446
Schedule remediation
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-1285Improper Validation of Specified Index, Position, or Offset in Input
CWE-20Improper Input Validation
▤

Affected Products & Versions

2
juniper junos< 19.4
juniper junosall versions
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · sirt@juniper.net
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD18 Oct 2022 · 03:15 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://kb.juniper.net/JSA69900Vendor Advisory
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