CVE-2016-0906
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 · uneditedThe web-restore interface in Avamar Data Store (ADS) and Avamar Virtual Edition (AVE) in EMC Avamar through 7.1.2 and 7.2.x through 7.2.1 allows remote authenticated users to read or delete directories via a Linux backup-restore operation.
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 confidenceThis is an authenticated directory traversal/arbitrary file access vulnerability in the web-restore interface of EMC Avamar backup systems (versions through 7.1.2 and 7.2.x through 7.2.1). Authenticated users can exploit the Linux backup-restore operation to read or delete directories outside their intended scope, indicating insufficient access controls in the web-restore functionality.
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<= 7.2.1CVSS 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
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:N/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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Confirm EMC Avamar installationCheck for Avamar processes (avtar, avmgr, avamarded) or look for /opt/avamar directory structure. On the Avamar server, run 'dpkg -l | grep avamar' or 'rpm -qa | grep avamar' to list installed Avamar packages.Affected if System is not running EMC Avamar product
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Determine Avamar versionRun 'avamar --version' or check /opt/avamar/etc/avamar.version file. Alternatively, access the web management console and check the About/System Info page for the version number.Affected if Installed version is 7.2.1 or lower, or any 7.1.x version through 7.1.2
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Verify web-restore interface accessibilityCheck if port 8543 (default web-restore/HTTPS) is listening. Run 'netstat -tlnp | grep 8543' or 'ss -tlnp | grep 8543' on the Avamar server. Also check firewall rules for inbound access to this port.Affected if Web-restore interface port 8543 is exposed and accessible from untrusted networks
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Confirm web-restore service statusCheck if the avamar-web-restore or avweb restore service is running. Run 'service avwebd status' or look for avwebd/avamar-web-restore process: 'ps aux | grep avweb'Affected if Web-restore service (avwebd) is running and accessible to authenticated users
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Review web-restore user accountsExamine /opt/avamar/etc/mcserver.ini or the Avamar user database for accounts with restore privileges. Check if default or test accounts exist with restore permissions.Affected if There are authenticated user accounts configured with restore access
A system is affected if it is running EMC Avamar version 7.2.1 or lower, has the web-restore interface enabled, and has user accounts with restore permissions accessible to untrusted users.
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.
From vendor dataApply available vendor patches for EMC Avamar to remediate this vulnerability; if patches are unavailable, restrict network access to the web-restore interface to trusted internal users only and monitor for unauthorized restore operations.
- Consultation3.0 h
- Implementation6.0 h
- Testing5.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2016-0906 — 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-2016-0906 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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