OpenserApplication

CVE-2007-5469

MEDIUM · 5.0 CVSS v2.0 Published 2007-10-16
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
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
OpenSER 1.2.2 does not verify the Digest authentication header URI against the Request URI in SIP messages, which allows remote attackers to use sniffed Digest authentication credentials to call arbitrary telephone numbers or spoof caller ID (aka "toll fraud and authentication forward attack"). NOTE: Debian disputes this issue, stating that "having the two URIs mismatch is allowed by the standard and happens in some setups for valid reasons.

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 confidence

OpenSER 1.2.2 fails to validate that the URI in the SIP Digest authentication header matches the Request URI. Attackers who have captured (sniffed) valid Digest authentication credentials can replay them against arbitrary Request URIs, enabling toll fraud by calling expensive telephone numbers or spoofing caller ID.

MitigationUpgrade to a patched version of OpenSER/Kamailio that implements URI validation in the authentication module, or implement upstream detection to flag mismatched authentication header URIs.

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
OpenserApplication
Affected:= 1.2.2

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
Partial
Integrity
None
Availability
None

AV:N/AC:L/Au:N/C:P/I:N/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. Confirm OpenSER is running
    Run 'ps aux | grep -i openser' or check for SIP service listening on port 5060
    Affected if OpenSER process is running and serving SIP requests
  2. Identify OpenSER version
    Run 'openser -V' or check the installed package version via 'dpkg -l | grep openser' or 'rpm -qi openser'
    Affected if Version is exactly 1.2.2 (other versions may have different vulnerability status)
  3. Verify SIP Digest authentication is enabled
    Check the OpenSER configuration file (typically /etc/openser/openser.cfg) for 'auth' or 'www_authenticate' directives in the request route
    Affected if SIP Digest authentication is configured and processing authentication challenges
  4. Check authentication module version
    Run 'openserctl module_list' or examine the auth module file in /usr/lib/openser/modules/ or /usr/lib64/openser/modules/
    Affected if auth module is loaded from the 1.2.2 release package

If OpenSER version 1.2.2 is running with SIP Digest authentication enabled, the environment is affected by this URI validation bypass vulnerability.

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
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Upgrade to a patched version of OpenSER/Kamailio that implements URI validation in the authentication module, or implement upstream detection to flag mismatched authentication header URIs.

Fix this in Openser Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA3.0 h
21.0 hours of engineering $3,680
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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-2007-5469 in production — separate from our analysis above.

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What belongs here
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