dbcve.org
Emc Avamar ServerApplication · Dell

CVE-2020-5341

CRITICAL · 9.8 CVSS v3.1 Published 2021-07-28
Patch available
A vendor patch is available. No clean upgrade release — apply the published patch.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click Patch available

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
Deserialization of Untrusted Data Vulnerability Dell EMC Avamar Server versions 7.4.1, 7.5.0, 7.5.1, 18.2, 19.1 and 19.2 and Dell EMC Integrated Data Protection Appliance versions 2.0, 2.1, 2.2, 2.3, 2.4 and 2.4.1 contain a Deserialization of Untrusted Data Vulnerability. A remote unauthenticated attacker could exploit this vulnerability to send a serialized payload that would execute code on the system.

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
How this class of weakness works · CWE-502

The application rebuilds objects from attacker-supplied serialized data, and the act of rebuilding can trigger dangerous code paths. In many runtimes this leads straight to remote code execution. The durable fix is to avoid deserializing untrusted input — or to use a strict, type-limited format with integrity checks.

General guidance for the deserialization of untrusted data class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

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
Emc Avamar ServerApplication
Affected:= 7.4.1= 7.5.0= 7.5.1= 18.1= 18.2= 19.1= 19.2
Emc Integrated Data Protection Appliance FirmwareOperating system
Affected:= 2.0= 2.1= 2.2= 2.3= 2.4= 2.4.1

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

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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
Patch available Apply the vendor patch
Vendor patch www.dell.com →
Recommended fix High confidence

Dell EMC Avamar Server version 18.2, 19.1, or 19.2; Dell EMC Integrated Data Protection Appliance version 2.4 or 2.4.1

  1. 1. Identify the currently installed Dell EMC Avamar Server or Integrated Data Protection Appliance version
  2. 2. Determine the appropriate upgrade path based on your current version (7.4.1, 7.5.0, 7.5.1, or 18.1 for Avamar; 2.0, 2.1, 2.2, or 2.3 for IDPA)
  3. 3. Download the corresponding security patch or upgrade from the Dell EMC support portal at https://www.dell.com/support/security/en-us/details/541677/DSA-2020-057-Dell-EMC-Avamar-Server-Deserialization-of-Untrusted-Data-Vulnerability
  4. 4. Follow Dell EMC's official upgrade documentation to apply the patch or perform the version upgrade
  5. 5. Verify the installation of the security update and confirm the version has been successfully updated
Caveat Review Dell EMC upgrade documentation for any compatibility requirements or migration procedures specific to your current version

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

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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-2020-5341 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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