CVE-2011-2809
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 · uneditedWebKit, as used in Apple iTunes before 10.5, allows man-in-the-middle attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via vectors related to iTunes Store browsing, a different vulnerability than other CVEs listed in APPLE-SA-2011-10-11-1.
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 confidenceMemory corruption vulnerability in WebKit (used by iTunes before v10.5) allows remote attackers to execute arbitrary code or cause application crash via man-in-the-middle attacks when browsing the iTunes Store.
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<= 10.4.1= 4.0.0= 4.0.1= 4.1.0= 4.2.0= 4.5.0= 4.6.0= 4.7.0= 4.7.1= 4.7.2= 4.8.0= 4.9.0all versionsCVSS 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
- High
- Authentication
- None
- Confidentiality
- Complete
- Integrity
- Complete
- Availability
- Complete
AV:N/AC:H/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 checksWork through these to decide whether this CVE applies to you.
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Check installed iTunes versionOpen iTunes, then go to Help > About iTunes to view the version number. Alternatively, check the version in the iTunes application file properties or Add/Remove Programs listing.Affected if The version is 10.4.1 or lower, or is one of the following: 4.0.0, 4.0.1, 4.1.0, 4.2.0, 4.5.0, 4.6.0, 4.7.0, 4.7.1, 4.7.2, 4.8.0, or 4.9.0
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Identify if WebKit-based browsing is in useThe vulnerability affects the WebKit component used when browsing the iTunes Store within iTunes. Verify if the iTunes Store feature is accessible and was used.Affected if The iTunes Store feature is available and was used for browsing content, as the flaw is triggered during iTunes Store browsing sessions
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Assess network exposure to iTunes StoreReview network traffic or logs for connections to Apple's iTunes Store servers (itunes.apple.com and related domains) from the iTunes application.Affected if Connections to iTunes Store servers were made from the affected iTunes version, as the attack vector is a man-in-the-middle attack during store browsing
You are affected if iTunes version 10.4.1 or lower (or one of the listed 4.x versions) is installed AND the iTunes Store feature was accessed, exposing traffic to potential man-in-the-middle interception.
Generated from the published advisory. Verify against your own configuration.
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 dataUpdate iTunes to version 10.5 or later, which includes the patched WebKit component.
- Consultation1.0 h
- Implementation1.0 h
- Testing1.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2011-2809 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2011-2809 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- 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
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