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LinuxOperating system · Oracle

CVE-2016-5252

HIGH · 8.8 CVSS v3.0 Published 2016-08-05
Fix available
A fix is available. Upgrade to after 47.0.1 or later.
See remediation →
95/100
Remediation priority · Urgent
Remotely reachable 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
Stack-based buffer underflow in the mozilla::gfx::BasePoint4d function in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 allows remote attackers to execute arbitrary code via crafted two-dimensional graphics data that is mishandled during clipping-region calculations.

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 confidence

Stack-based buffer underflow in mozilla::gfx::BasePoint4d function in Mozilla Firefox. Triggered by specially crafted 2D graphics data during clipping-region calculations, allowing remote attackers to potentially execute arbitrary code.

MitigationUpdate Mozilla Firefox to version 48.0 or later, or Firefox ESR to version 45.3 or later to patch the vulnerability.

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
LinuxOperating system
Affected:= 5.0= 6= 7
FirefoxWeb browser
Affected:<= 47.0.1= 45.1.0= 45.1.1= 45.2.0= 45.3.0

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

CVSS:3.0/AV:N/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. Determine installed Firefox version
    Run 'firefox --version' on Linux, or open Firefox and navigate to Help > About Firefox on Windows/Mac. Alternatively, check the executable properties of firefox.exe.
    Affected if The version number returned matches any of the following: Firefox 45.1.0, 45.1.1, 45.2.0, 45.3.0, or any version 47.0.1 or earlier.
  2. Confirm the vulnerable 2D graphics component is present
    The vulnerability exists in the gfx library (BasePoint4d function). This component is present in all standard Firefox installations. No additional feature check is needed.
    Affected if Firefox is installed and operational with its default graphics rendering enabled.
  3. Identify the platform distribution
    On Linux, check /etc/os-release for Oracle Linux version. On Windows, verify the Oracle Linux environment only applies if Firefox was distributed via Oracle Linux packages.
    Affected if The system is running Oracle Linux 5.0, 6, or 7 with a vulnerable Firefox version installed from Oracle packages.

A user is affected if Firefox version 45.1.0, 45.1.1, 45.2.0, 45.3.0, or any version up to and including 47.0.1 is installed, particularly on Oracle Linux 5.0, 6, or 7.

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
Upgrade available Upgrade to a release after 47.0.1
Interim mitigation

Update Mozilla Firefox to version 48.0 or later, or Firefox ESR to version 45.3 or later to patch the vulnerability.

Fix this in Linux Scoped from the published advisory
  • Consultation1.0 h
  • Implementation1.0 h
  • Testing2.0 h
  • Review / QA1.0 h
5.0 hours of engineering $860
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,376.

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-2016-5252 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