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Debian LinuxOperating system · Debian

CVE-2022-44641

MEDIUM · 6.5 CVSS v3.1 Published 2022-11-18
Fix available
A fix is available. Upgrade to 2022.11 or later.
See remediation →
71/100
Remediation priority · Elevated
Remotely reachable Zero-click

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 · unedited
In Linaro Automated Validation Architecture (LAVA) before 2022.11, users with valid credentials can submit crafted XMLRPC requests that cause a recursive XML entity expansion, leading to excessive use of memory on the server and a Denial of Service.

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 confidence

LAVA before version 2022.11 contains a XML entity expansion vulnerability in its XMLRPC API. Authenticated users can submit specially crafted XMLRPC requests that trigger recursive XML entity expansion, causing excessive memory consumption and resulting in a Denial of Service condition due to resource exhaustion.

MitigationUpgrade LAVA to version 2022.11 or later. Additionally, consider implementing XML parser limits and monitoring for abnormal XML payload sizes in XMLRPC requests.

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
Debian LinuxOperating system
Affected:= 10.0= 11.0
LavaApplication
Affected:< 2022.11

CVSS 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
Low
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:L/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 checks

Work through these to decide whether this CVE applies to you.

  1. Identify LAVA installation and version
    Run 'lava-server --version' or check the package manager (dpkg/apt) for lava-server package version. If using Debian, check 'dpkg -l | grep lava'
    Affected if LAVA version is installed and the version is lower than 2022.11, or the Debian package version corresponds to Debian 10.0 or 11.0 releases
  2. Confirm XMLRPC API is enabled
    Check the LAVA server configuration files (typically in /etc/lava-server/) for the XMLRPC API settings, or attempt to access the XMLRPC endpoint (commonly at /RPC2/)
    Affected if XMLRPC API endpoint is exposed and accessible without additional configuration restrictions
  3. Verify authentication configuration
    Review LAVA authentication settings in /etc/lava-server/settings.py or the database to confirm whether XMLRPC API accepts authenticated users
    Affected if XMLRPC API accepts authenticated user sessions (authenticated access is required for exploitation, but this is the normal configuration)
  4. Review recent XMLRPC request logs
    Examine LAVA server logs (typically in /var/log/lava-server/) for unusually large XML payloads or patterns consistent with entity expansion in XMLRPC requests
    Affected if Logs show abnormally large XML payloads in XMLRPC requests or patterns indicative of recursive entity expansion

A system is affected if LAVA server is installed with a version prior to 2022.11 and the XMLRPC API is accessible to authenticated users.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 · scoped
Upgrade available Upgrade to 2022.11 or later
Fixed in 2022.11
Interim mitigation

Upgrade LAVA to version 2022.11 or later. Additionally, consider implementing XML parser limits and monitoring for abnormal XML payload sizes in XMLRPC requests.

Recommended fix High confidence

LAVA 2022.11 or later

  1. 1. Identify the LAVA instance and confirm current version (e.g., via 'lava-server --version' or package manager)
  2. 2. For Debian-based systems, update the package list: 'apt update'
  3. 3. Upgrade LAVA packages: 'apt upgrade' or 'apt install lava'
  4. 4. Verify the upgrade was successful by checking the version is 2022.11 or later
  5. 5. Restart LAVA services if necessary (e.g., 'systemctl restart lava-server')
  6. 6. Test that XMLRPC endpoints are functioning normally

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Debian Linux Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing6.0 h
  • Review / QA2.0 h
14.0 hours of engineering $2,380
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2022-44641 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • 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
  • No spam, self-promotion, credentials, or personal data