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CVE-2012-2858

MEDIUM · 6.8 CVSS v2.0 Published 2012-08-06
Fix available
A fix is available. Upgrade to after 21.0.1180.56 or later.
See remediation →
77/100
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
Buffer overflow in the WebP decoder in Google Chrome before 21.0.1180.57 on Mac OS X and Linux, and before 21.0.1180.60 on Windows and Chrome Frame, allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted WebP image.

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 Google Chrome's WebP image format decoder. A remote attacker can exploit this by tricking users into opening a specially crafted WebP image, potentially causing denial of service or achieving arbitrary code execution.

MitigationUpdate Google Chrome to version 21.0.1180.57 or later for Mac OS X and Linux, or version 21.0.1180.60 or later for Windows and Chrome Frame.

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:<= 21.0.1180.56= 21.0.1180.0= 21.0.1180.1= 21.0.1180.2= 21.0.1180.31= 21.0.1180.32= 21.0.1180.33= 21.0.1180.34= 21.0.1180.35= 21.0.1180.36= 21.0.1180.37= 21.0.1180.38

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
M
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial

AV:N/AC:M/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
    Navigate to chrome://version in the Chrome browser or run 'google-chrome --version' from command line
    Affected if The displayed version matches any of the affected versions: 21.0.1180.0 through 21.0.1180.38, or any version <= 21.0.1180.56
  2. Compare version against affected range
    Review the full version string (for example, 21.0.1180.31) and verify if it falls within the vulnerable set
    Affected if Version is 21.0.1180.x where x is 0-38, or version is 21.0.1180.56 or lower
  3. Confirm WebP image handling is present
    Attempt to open any WebP format image file in the browser, or check that the WebP decoder component is loaded
    Affected if WebP images can be rendered (the decoder is built into Chrome and cannot be disabled) and the version is in the affected range

A user is affected if they are running Google Chrome version 21.0.1180.56 or below, or any specific 21.0.1180.0 through 21.0.1180.38 version, and can process WebP images.

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 21.0.1180.56
Interim mitigation

Update Google Chrome to version 21.0.1180.57 or later for Mac OS X and Linux, or version 21.0.1180.60 or later for Windows and Chrome Frame.

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-2012-2858 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