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ChromeWeb browser · Google

CVE-2012-2843

HIGH · 7.5 CVSS v2.0 Published 2012-07-12
Fix available
A fix is available. Upgrade to after 20.0.1132.56 or later.
See remediation →
84/100
Remediation priority · High
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
Use-after-free vulnerability in Google Chrome before 20.0.1132.57 allows remote attackers to cause a denial of service or possibly have unspecified other impact via vectors related to layout height tracking.

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

Use-after-free vulnerability in Google Chrome's layout height tracking mechanism before version 20.0.1132.57 allows remote attackers to trigger memory corruption, potentially leading to denial of service or arbitrary code execution.

MitigationUpdate Google Chrome to version 20.0.1132.57 or later to patch the use-after-free vulnerability in the layout engine.

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
ChromeWeb browser
Affected:<= 20.0.1132.56= 20.0.1132.0= 20.0.1132.1= 20.0.1132.2= 20.0.1132.3= 20.0.1132.4= 20.0.1132.5= 20.0.1132.6= 20.0.1132.7= 20.0.1132.8= 20.0.1132.9= 20.0.1132.10

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
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial

AV:N/AC:L/Au:N/C:P/I:P/A:P

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 installed Chrome version
    Open Chrome, click the menu icon (three dots) > Help > About Google Chrome, or navigate to chrome://settings/help
    Affected if The displayed version is 20.0.1132.56 or earlier, or exactly matches any of these: 20.0.1132.0 through 20.0.1132.10
  2. Verify exact version number
    Look for the full version string in the About Chrome page (it shows as X.X.X.X)
    Affected if The version starts with 20.0.1132 and the fourth number is 56 or lower, or is any version from 20.0.1132.0 through 20.0.1132.10 inclusive
  3. Confirm channel and build type
    Check if the browser is a stable release or a different channel (beta/dev/canary) by examining the same About page
    Affected if The affected versions listed apply to stable channel Chrome; earlier versions on other channels may also contain this flaw

You are affected if your Chrome version is 20.0.1132.56 or any version from 20.0.1132.0 through 20.0.1132.10, because the use-after-free in the layout height tracking exists in those specific builds.

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 20.0.1132.56
Interim mitigation

Update Google Chrome to version 20.0.1132.57 or later to patch the use-after-free vulnerability in the layout engine.

Fix this in Chrome Scoped from the published advisory
  • Consultation1.0 h
  • Implementation1.0 h
  • Testing1.0 h
  • Review / QA1.0 h
4.0 hours of engineering $750
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,200.

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-2012-2843 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