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FirefoxWeb browser · Mozilla

CVE-2008-0367

MEDIUM · 5.0 CVSS v2.0 Published 2008-01-19
Fix available
A fix is available. Upgrade to after 2.0.0.11 or later.
See remediation →
59/100
Remediation priority · Elevated
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
Mozilla Firefox 2.0.0.11, 3.0b2, and possibly earlier versions, when prompting for HTTP Basic Authentication, displays the site requesting the authentication after the Realm text, which might make it easier for remote HTTP servers to conduct phishing and spoofing attacks.

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

Firefox's HTTP Basic Authentication dialog displays the requesting site's information after the Realm text in a way that could mislead users about the true source of the authentication request, facilitating phishing attacks.

MitigationUpgrade to a patched Firefox version. Users should verify the authenticity of authentication prompts before entering credentials.

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:<= 2.0.0.11= 3.0

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
None
Integrity
Partial
Availability
None

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

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 Firefox version
    Open Firefox, click Help > About Firefox, or run 'firefox --version' from command line
    Affected if Version is 2.0.0.11 or earlier, or exactly version 3.0
  2. Identify Firefox release channel
    In Firefox, go to Help > About Firefox - the update channel may be shown, or check the application binary details
    Affected if Running an unpatched release channel build of the affected versions
  3. Determine if HTTP Basic Auth dialogs display misleading site info
    Visit a site that triggers HTTP Basic Authentication (a protected resource) and observe whether the realm description appears after the site hostname in the dialog title bar
    Affected if The dialog shows hostname followed by realm text in a way that could confuse users about the true origin

You are affected if Firefox version is 2.0.0.11 or earlier, or exactly version 3.0, and HTTP Basic Authentication dialogs display the hostname before the realm in a manner that could mislead users about the authentication source.

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 2.0.0.11
Interim mitigation

Upgrade to a patched Firefox version. Users should verify the authenticity of authentication prompts before entering credentials.

Fix this in Firefox Scoped from the published advisory
  • Consultation1.0 h
  • Review / QA1.0 h
2.0 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.

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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-2008-0367 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