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Enterprise Linux AusOperating system · Redhat

CVE-2017-7824

CRITICAL · 9.8 CVSS v3.0 Published 2018-06-11
Fix available
A fix is available. Upgrade to 52.4.0 / 56.0 or later.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges 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
A buffer overflow occurs when drawing and validating elements with the ANGLE graphics library, used for WebGL content. This is due to an incorrect value being passed within the library during checks and results in a potentially exploitable crash. This vulnerability affects Firefox < 56, Firefox ESR < 52.4, and Thunderbird < 52.4.

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

A buffer overflow vulnerability exists in the ANGLE graphics library (used for WebGL content rendering in Firefox and Thunderbird). An incorrect value is passed during element validation checks, causing memory corruption that leads to a potentially exploitable crash.

MitigationUpgrade affected products to Firefox 56+, Firefox ESR 52.4+, or Thunderbird 52.4+ to patch the vulnerable ANGLE library code.

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
Enterprise Linux AusOperating system
Affected:= 7.4
Enterprise Linux DesktopOperating system
Affected:= 6.0= 7.0
Enterprise Linux EusOperating system
Affected:= 7.4= 7.5
Enterprise Linux ServerOperating system
Affected:= 6.0= 7.0
Enterprise Linux WorkstationOperating system
Affected:= 6.0= 7.0
Debian LinuxOperating system
Affected:= 7.0= 8.0= 9.0
FirefoxWeb browser
Affected:< 52.4.0< 56.0
ThunderbirdApplication
Affected:< 52.4.0

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
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

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

  1. Check if Mozilla Firefox is installed
    Open a terminal and run: which firefox or rpm -q firefox (RHEL) or dpkg -l firefox (Debian)
    Affected if Firefox is installed and the version is below 52.4.0 or below 56.0 (compare your installed version to these thresholds)
  2. Check if Mozilla Thunderbird is installed
    Open a terminal and run: which thunderbird or rpm -q thunderbird (RHEL) or dpkg -l thunderbird (Debian)
    Affected if Thunderbird is installed and the version is below 52.4.0 (compare your installed version to this threshold)
  3. Determine the exact Firefox version
    Run firefox --version or look in Help > About Firefox within the application
    Affected if The displayed version is less than 52.4.0 or less than 56.0 (depending on your release channel)
  4. Determine the exact Thunderbird version
    Run thunderbird --version or look in Help > About Thunderbird within the application
    Affected if The displayed version is less than 52.4.0
  5. Check if WebGL is enabled in Firefox
    Type about:config in the Firefox address bar, search for webgl.disabled, and check its value
    Affected if WebGL is enabled (webgl.disabled is not set to true) and your Firefox version is vulnerable per the version checks above

You are affected if you have Firefox below 52.4.0 or below 56.0, or Thunderbird below 52.4.0, with WebGL enabled in the browser.

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 52.4.0 / 56.0 or later
Fixed in 52.4.056.0
Interim mitigation

Upgrade affected products to Firefox 56+, Firefox ESR 52.4+, or Thunderbird 52.4+ to patch the vulnerable ANGLE library code.

Recommended fix High confidence

Firefox 56.0+ (or Firefox ESR 52.4+), Thunderbird 52.4+

  1. Upgrade Firefox to version 56.0 or later (or Firefox ESR 52.4 or later)
  2. Upgrade Thunderbird to version 52.4 or later
  3. For Enterprise Linux systems (6.x, 7.x), apply the latest security updates via 'yum update' or 'dnf update'
  4. For Debian systems (7.x, 8.x, 9.x), apply the latest security updates via 'apt-get update' and 'apt-get upgrade'
  5. Restart the application after updating

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

Fix this in Enterprise Linux Aus Scoped from the published advisory
  • Consultation3.0 h
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA2.0 h
12.0 hours of engineering $2,130
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,408.

Scan for this in your stack

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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-2017-7824 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