CVE-2022-22251
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedOn cSRX Series devices software permission issues in the container filesystem and stored files combined with storing passwords in a recoverable format in Juniper Networks Junos OS allows a local, low-privileged attacker to elevate their permissions to take control of any instance of a cSRX software deployment. This issue affects Juniper Networks Junos OS 20.2 version 20.2R1 and later versions prior to 21.2R1 on cSRX Series.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceThe vulnerability involves permission misconfigurations in the cSRX container filesystem that allow a low-privileged local attacker to access sensitive stored files. Combined with passwords being stored in a recoverable (likely plaintext or weakly hashed) format, an attacker can escalate privileges and gain full control of the cSRX instance.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data>= 20.2, < 21.2CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Local
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify the Junos OS version on the cSRX deviceExecute 'show version' or check the system firmware version through the cSRX management interface or consoleAffected if The installed Junos version is 20.2 or higher but below 21.2R1, placing it in the vulnerable range
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Locate the cSRX container filesystemAccess the cSRX container shell and navigate to the filesystem directories where configuration and credential data are storedAffected if The container filesystem exists and contains sensitive configuration files accessible within the container environment
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Verify file permissions on sensitive storage locationsList file permissions (ls -la) on directories containing passwords, keys, or configuration files inside the cSRX containerAffected if Files containing credentials or sensitive data are readable by non-root or low-privileged user accounts due to overly permissive permissions (e.g., 644, 777)
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Inspect stored credentials for weak protectionExamine password files, configuration backups, or credential storage locations for plaintext or weakly hashed passwordsAffected if Passwords are stored in plaintext or a recoverable hash format accessible to low-privileged users
A cSRX device is affected if it runs Junos OS version 20.2 through 21.1 and has accessible sensitive files with weak permissions allowing low-privileged local users to retrieve credentials.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped21.2
Upgrade Junos OS on cSRX devices to version 21.2R1 or later, which contains the security fix. As a compensating control, restrict local physical and console access to prevent untrusted users from reaching the low-privileged account.
21.2R1 or later (any version after 21.2R1)
- Verify current Junos OS version on cSRX Series device using 'show version' command
- Review Juniper upgrade documentation and release notes for cSRX devices
- Download Junos OS 21.2R1 or later from Juniper Networks support portal
- Plan maintenance window as upgrade requires device reboot
- Backup current configuration using 'request system configuration rescue save'
- Upload new Junos OS image to device
- Initiate upgrade using 'request system software add <image-name>' command
- Reboot device after upgrade completes using 'request system reboot'
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA3.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-22251 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2022-22251 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
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