CVE-2007-4398
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 · uneditedMultiple CRLF injection vulnerabilities in the (1) now-playing.rb and (2) xmms.pl 1.1 scripts for WeeChat allow user-assisted remote attackers to execute arbitrary IRC commands via CRLF sequences in the name of the song in a .mp3 file.
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 confidenceCRLF injection vulnerability in WeeChat's now-playing.rb and xmms.pl scripts allows attackers to inject arbitrary IRC commands via specially crafted .mp3 file metadata (song names containing CRLF sequences). The scripts fail to sanitize song name input before using it in IRC communications, enabling command injection.
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<= 0.8.10rc5CVSS 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 checksWork through these to decide whether this CVE applies to you.
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Locate now-playing.rb scriptSearch for the now-playing.rb file in your WeeChat scripts directory (typically ~/.weechat/ruby/ or /usr/share/weechat/scripts/)Affected if The script file exists and is loaded by WeeChat
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Locate xmms.pl scriptSearch for the xmms.pl file in your WeeChat scripts directory (typically ~/.weechat/perl/ or /usr/share/weechat/scripts/)Affected if The script file exists and is loaded by WeeChat
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Check if scripts are activeRun /script list in WeeChat to see loaded scripts, or check WeeChat's script autoload configurationAffected if Either now-playing.rb or xmms.pl appears in the list of loaded scripts
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Verify IRC connection is activeCheck if WeeChat has an active IRC server connection using /server list or /connectedAffected if WeeChat is connected to any IRC server while the vulnerable scripts are loaded
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Assess MP3 metadata sourceInspect the script configuration using /perl or /ruby list and check what media player or metadata source is configuredAffected if The scripts are configured to read metadata from XMMS, MP3 files, or any media player without CRLF sanitization
You are affected if either now-playing.rb or xmms.pl script is loaded in WeeChat and connected to IRC while processing unsanitized MP3 file metadata containing CRLF sequences.
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 dataImplement strict input validation to reject or sanitize any CRLF sequences in song metadata before use; upgrade to patched versions of these scripts if available.
- Consultation2.0 h
- Implementation3.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,272.
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Free · runs locallyCheck whether your project pulls in CVE-2007-4398 — 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-2007-4398 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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