CVE-2007-3308
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 · uneditedSimple Machines Forum (SMF) 1.1.2 uses a concatenation method with insufficient randomization when creating a WAV file CAPTCHA, which allows remote attackers to pass the CAPTCHA test via an automated brute-force attack.
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 confidenceSimple Machines Forum 1.1.2 generates WAV file CAPTCHAs using a concatenation method that lacks sufficient randomization. Attackers can decode or brute-force the predictable audio patterns to bypass the CAPTCHA protection, enabling automated account creation or other protected actions.
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= 1.1.2CVSS 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 checksWork through these to decide whether this CVE applies to you.
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Identify installed SMF versionCheck the forum footer for the version number, or look for a version.php file in the main SMF directory that contains the $smfVersion variableAffected if The installed version is exactly 1.1.2
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Access SMF admin CAPTCHA settingsLog into the admin panel and navigate to Security and Moderation settings, or examine the database table smf_settings for captcha-related configuration entriesAffected if WAV CAPTCHA is enabled as the verification method
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Verify CAPTCHA audio generation methodGenerate a test CAPTCHA and examine the generated WAV file, or inspect the CAPTCHA generation code in the SMF directory (typically in Sources/Captcha.php or similar)Affected if The code uses a simple concatenation method for audio CAPTCHA generation without cryptographic randomization
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Check CAPTCHA configuration in databaseQuery the smf_settings table for fields like 'captcha_enabled', 'captcha_type', or 'use_wav_captcha' to determine the active CAPTCHA configurationAffected if The setting value indicates WAV-based CAPTCHA is active
A user is affected if they are running exactly SMF 1.1.2 with WAV CAPTCHA enabled, allowing attackers to bypass verification through analysis of predictable audio patterns.
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 dataUpgrade SMF to a patched version that implements proper cryptographic randomization in CAPTCHA generation, or disable the WAV CAPTCHA and use an alternative verification method with additional rate limiting controls.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,984.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2007-3308 — 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-2007-3308 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
- No spam, self-promotion, credentials, or personal data