CVE-2007-3177
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 · uneditedIngate Firewall and SIParator before 4.5.2 allow remote attackers to bypass SIP authentication via a certain maddr parameter.
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 confidenceIngate Firewall and SIParator devices before version 4.5.2 contain a vulnerability that allows remote attackers to bypass SIP (Session Initiation Protocol) authentication mechanisms. The attack vector involves manipulating a specific 'maddr' parameter in SIP requests, likely by specifying an alternate address that bypasses the normal authentication checks. This authentication bypass could allow unauthorized SIP traffic to traverse the firewall without proper credential verification.
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<= 4.5.1<= 4.5.1CVSS 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 checksWork through these to decide whether this CVE applies to you.
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Identify device model and firmware versionAccess the Ingate device web interface or CLI and locate the firmware version information, typically found in the system status or about sectionAffected if The device is an Ingate Firewall or SIParator running firmware version 4.5.1 or earlier
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Confirm SIP functionality is enabledInspect the device configuration for SIP ALG, SIP proxy, or SIP traversal settings. This is typically found in the firewall rules or VoIP settings menuAffected if SIP ALG or SIP proxy functionality is enabled on the device, making it process SIP traffic
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Check SIP request handling for maddr parameterExamine the SIP traffic inspection or proxy configuration for how the maddr parameter in SIP requests is handled. Look for settings controlling how the device processes SIP contact headersAffected if The device processes SIP requests without properly validating or filtering the maddr parameter, allowing alternate routing of authentication traffic
A user is affected if they have an Ingate Firewall or SIParator device running firmware version 4.5.1 or earlier with SIP functionality enabled and the device does not properly validate the maddr parameter in SIP requests.
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 Ingate Firewall and SIParator installations to version 4.5.2 or later to obtain the patched firmware that addresses this authentication bypass vulnerability.
- Consultation2.0 h
- Implementation2.0 h
- Testing4.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2007-3177 — 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-2007-3177 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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