CVE-2015-2058
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 · uneditedc2s/c2s.c in Jabber Open Source Server 2.3.2 and earlier truncates data without ensuring it remains valid UTF-8, which allows remote authenticated users to read system memory or possibly have other unspecified impact via a crafted JID.
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 confidenceThe c2s (client-to-server) component in Jabber Open Source Server 2.3.2 and earlier truncates JID (Jabber ID) data without validating that the resulting data remains valid UTF-8. This malformed UTF-8 handling allows authenticated remote users to read system memory through crafted JID input, leading to potential information disclosure.
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<= 2.3.2CVSS 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
- Single
- Confidentiality
- Partial
- Integrity
- Partial
- Availability
- Partial
AV:N/AC:L/Au:S/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.
-
Identify Jabberd2 installation and versionUse package manager commands (dpkg -l, rpm -qi, or similar) or check jabberd2 --version to determine the installed versionAffected if Installed version is 2.3.2 or earlier
-
Locate c2s componentInspect the Jabberd2 configuration files (typically in /etc/jabberd/ or as specified in deployment) to confirm the c2s module is configuredAffected if c2s component is present and enabled in the configuration
-
Verify JID processing is activeConfirm the server is configured to accept client connections and process JID data, which is the default behavior for a functioning Jabber serverAffected if The server accepts and processes JID data from authenticated clients (default state)
You are affected if you are running Jabberd2 version 2.3.2 or earlier with the c2s component enabled, as the vulnerability allows authenticated users to trigger malformed UTF-8 handling through crafted JID input.
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 to a patched version of Jabber Open Source Server. If no upgrade is available, implement UTF-8 validation before data truncation in c2s/c2s.c and validate all incoming JID data.
- Consultation4.0 h
- Implementation8.0 h
- Testing8.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,656.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2015-2058 — 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-2015-2058 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
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
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.
- 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