CVE-2022-43756
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 · uneditedA Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') vulnerability in SUSE Rancher allows remote attackers to cause denial of service by supplying specially crafted git credentials. This issue affects: SUSE Rancher wrangler version 0.7.3 and prior versions; wrangler version 0.8.4 and prior versions; wrangler version 1.0.0 and prior versions.
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 · moderate confidenceAn injection vulnerability in SUSE Rancher wrangler allows remote attackers to cause denial of service by supplying specially crafted git credentials. The vulnerability stems from improper neutralization of special elements in the git credential handling code, likely allowing malicious input to crash the service or consume excessive resources.
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< 0.7.4>= 0.8.0, < 0.8.5= 1.0.0CVSS 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
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 wrangler versionRun `wrangler --version` or check the package version if installed as a dependency (e.g., `npm list @wrangler/cli` or equivalent package manager query)Affected if The installed version falls within < 0.7.4, >= 0.8.0 and < 0.8.5, or equals 1.0.0
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Confirm git credential configuration is in useInspect the wrangler configuration file (typically wrangler.toml) for any `[credential]` or git-related credential settings, or check environment variables used for git authenticationAffected if Git credentials are configured or environment variables related to git authentication are present in the wrangler environment
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Review git credential input handlingCheck how git credentials are supplied to wrangler: look for user-supplied credential fields in configuration, API inputs, or environment variables that could contain specially crafted valuesAffected if User-supplied or externally sourced git credentials are processed by wrangler without additional validation layers
A user is affected if wrangler version is vulnerable AND git credentials are configured or processed in the environment.
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 · scoped0.7.40.8.5
Update wrangler to versions higher than 0.7.3, 0.8.4, and 1.0.0 (per the respective release branches). If immediate patching is not possible, restrict access to git credential configuration interfaces and implement input validation on credential fields.
wrangler 0.7.4, 0.8.5, or 1.0.1+ depending on your current version branch
- Identify the current wrangler version in your Rancher deployment
- For Wrangler < 0.7.4: Upgrade to version 0.7.4 or later
- For Wrangler >= 0.8.0 and < 0.8.5: Upgrade to version 0.8.5 or later
- For Wrangler = 1.0.0: Upgrade to version 1.0.1 or later
- Verify the upgrade by checking the wrangler version after updating
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-43756 — 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-2022-43756 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
- No weaponised exploit code, or anything meant to cause harm
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