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FirefoxWeb browser · Mozilla

CVE-2013-1722

HIGH · 9.3 CVSS v2.0 Published 2013-09-18
Fix available
A fix is available. Upgrade to after 23.0.1 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
Use-after-free vulnerability in the nsAnimationManager::BuildAnimations function in the Animation Manager in Mozilla Firefox before 24.0, Firefox ESR 17.x before 17.0.9, Thunderbird before 24.0, Thunderbird ESR 17.x before 17.0.9, and SeaMonkey before 2.21 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via vectors involving stylesheet cloning.

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

Use-after-free vulnerability in Mozilla Firefox, Thunderbird, SeaMonkey and related products allows remote attackers to execute arbitrary code via stylesheet cloning that triggers heap memory corruption in the nsAnimationManager::BuildAnimations function of the Animation Manager.

MitigationUpgrade to Firefox 24.0+, Firefox ESR 17.0.9+, Thunderbird 24.0+, Thunderbird ESR 17.0.9+, or SeaMonkey 2.21+ to remediate. Alternatively, disable or restrict JavaScript execution for untrusted content to reduce attack surface.

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
FirefoxWeb browser
Affected:<= 23.0.1= 19.0= 19.0.1= 19.0.2= 20.0= 20.0.1= 21.0= 22.0= 23.0= 17.0= 17.0.1= 17.0.2
ThunderbirdApplication
Affected:<= 17.0.9= 17.0= 17.0.1= 17.0.2= 17.0.3= 17.0.4= 17.0.5= 17.0.6= 17.0.7= 17.0.8
Thunderbird EsrApplication
Affected:= 17.0= 17.0.1= 17.0.2= 17.0.3= 17.0.4= 17.0.5= 17.0.6= 17.0.7= 17.0.8
SeamonkeyApplication
Affected:<= 2.20= 2.0= 2.0.1= 2.0.2= 2.0.3= 2.0.4= 2.0.5= 2.0.6= 2.0.7= 2.0.8= 2.0.9= 2.0.10

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
M
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete

AV:N/AC:M/Au:N/C:C/I:C/A:C

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. Identify installed Firefox version
    Open Firefox, click the menu button, select Help, then About Firefox. The version number is displayed on that page.
    Affected if The version matches any of these: 17.0, 17.0.1, 17.0.2, 19.0, 19.0.1, 19.0.2, 20.0, 20.0.1, 21.0, 22.0, 23.0, 23.0.1, or any version lower than 17.0 or between 17.0.2 and 19.0, or between 20.0.1 and 21.0, or between 22.0 and 23.0.1.
  2. Identify installed Thunderbird version
    Open Thunderbird, click the menu button, select Help, then About Thunderbird. The version number is displayed on that page.
    Affected if The version matches any of: 17.0 through 17.0.9, or is lower than 17.0.
  3. Identify installed SeaMonkey version
    Open SeaMonkey, click the menu, select Help, then About SeaMonkey. The version number is displayed on that page.
    Affected if The version matches any of: 2.0 through 2.0.10, 2.20, or is lower than 2.0 or between 2.0.10 and 2.20.
  4. Verify product type and ESR status
    If using Thunderbird or SeaMonkey, confirm whether it is the ESR (Extended Support Release) variant by checking the About dialog for ESR designation.
    Affected if For Thunderbird ESR, version 17.0 through 17.0.8 are affected; for non-ESR Thunderbird, version 17.0 through 17.0.9 are affected.

The environment is affected if the installed product is any version of Firefox 17.0-23.0.1, Thunderbird (ESR or non-ESR) 17.0-17.0.9, or SeaMonkey 2.0-2.20, as listed in the affected versions.

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 a release after 23.0.1
Interim mitigation

Upgrade to Firefox 24.0+, Firefox ESR 17.0.9+, Thunderbird 24.0+, Thunderbird ESR 17.0.9+, or SeaMonkey 2.21+ to remediate. Alternatively, disable or restrict JavaScript execution for untrusted content to reduce attack surface.

Recommended fix High confidence

Firefox 24.0+, Thunderbird 24.0+, Thunderbird ESR 17.0.9+, SeaMonkey 2.21+

  1. Upgrade Firefox to version 24.0 or later
  2. Upgrade Thunderbird to version 24.0 or later
  3. Upgrade Thunderbird ESR to version 17.0.9 or later
  4. Upgrade SeaMonkey to version 2.21 or later

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

Fix this in Firefox Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing2.0 h
  • Review / QA1.0 h
9.0 hours of engineering $1,600
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,560.

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-2013-1722 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