JustassemblyApplication · Telerik

CVE-2018-15122

HIGH · 7.8 CVSS v3.0 Published 2018-08-16
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
81/100
Remediation priority · High
No privileges

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
An issue found in Progress Telerik JustAssembly through 2018.1.323.2 and JustDecompile through 2018.2.605.0 makes it possible to execute code by decompiling a compiled .NET object (such as DLL or EXE) with an embedded resource file by clicking on the resource.

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

Telerik JustAssembly and JustDecompile contain a code execution vulnerability when decompiling malicious .NET assemblies with embedded resources. Clicking on an embedded resource in a specially crafted DLL or EXE triggers arbitrary code execution, allowing an attacker to run commands on the victim's machine.

MitigationUpdate Telerik JustAssembly to a version after 2018.1.323.2 and JustDecompile to a version after 2018.2.605.0, or avoid opening untrusted .NET assemblies with these tools until patches are applied.

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
JustassemblyApplication
Affected:>= 2018.1.323.2
JustdecompileApplication
Affected:>= 2018.2.605.0

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
Local
Complexity
Low
Privileges
None
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/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 checks

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

  1. Check if Telerik JustAssembly is installed
    Look for JustAssembly in the system (typically in Program Files or a user's AppData folder) and identify its version number
    Affected if The installed version is 2018.1.323.2 or higher and you open a specially crafted .NET assembly with embedded resources
  2. Check if Telerik JustDecompile is installed
    Look for JustDecompile in the system (typically in Program Files or a user's AppData folder) and identify its version number
    Affected if The installed version is 2018.2.605.0 or higher and you open a specially crafted .NET assembly with embedded resources
  3. Determine usage patterns with untrusted assemblies
    Review whether JustAssembly or JustDecompile is used to open assemblies from untrusted or unknown sources, particularly DLL or EXE files that may contain embedded resources
    Affected if You regularly decompile assemblies from untrusted or unknown origins using these tools
  4. Identify if clicking on embedded resources occurs
    When using these tools, note whether the workflow involves clicking on or interacting with embedded resources within decompiled assemblies
    Affected if Your typical workflow involves clicking on embedded resources in assemblies opened with these tools

You are affected if you have JustAssembly version 2018.1.323.2 or higher, or JustDecompile version 2018.2.605.0 or higher, and you open specially crafted malicious .NET assemblies and interact with embedded resources in them.

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.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Update Telerik JustAssembly to a version after 2018.1.323.2 and JustDecompile to a version after 2018.2.605.0, or avoid opening untrusted .NET assemblies with these tools until patches are applied.

Fix this in Justassembly Scoped from the published advisory
  • Consultation3.0 h
  • Implementation2.0 h
  • Testing2.0 h
  • Review / QA1.0 h
8.0 hours of engineering $1,440
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Scan for this in your stack

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dbcve dependency scanner

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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-2018-15122 in production — separate from our analysis above.

No notes yet

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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