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Vulnerability record · public intelligence
CVE-2007-4455
UNKNOWN

CVE-2007-4455

Published Aug 22, 2007 · Updated Oct 23, 2026

Severity · CVSSUNKNOWN · 5.0
Known exploitationNot listed
EPSS / likelihood1.77%
QFinch risk scoreNot available

Original summary

Normalized public record · Updated Oct 23, 2026

The SIP channel driver (chan_sip) in Asterisk Open Source 1.4.x before 1.4.11, AsteriskNOW before beta7, Asterisk Appliance Developer Kit 0.x before 0.8.0, and s800i (Asterisk Appliance) 1.x before 1.0.3 allows remote attackers to cause a denial of service (memory exhaustion) via a SIP dialog that causes a large number of history entries to be created.

Publisher and source text is retained separately from QFinch interpretation.

QFinch assessment

The SIP channel driver (chan_sip) in Asterisk Open Source 1.4.x before 1.4.11, AsteriskNOW before beta7, Asterisk Appliance Developer Kit 0.x before 0.8.0, and s800i (Asterisk Appliance) 1.x before 1.0.3 allows remote attackers to cause a denial of service (memory exhaustion) via a SIP dialog that causes a large number of history entries to be created.

Evidence: public source records

Affected products

Affected scope reported by the available public evidence
Affected package, product or rangeFix status
Consult the referenced vendor advisory for affected versions.Consult source advisory

Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.

Remediation

Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.

  1. Confirm the affected product and reachable code path exist in your environment.
  2. Apply the vendor-supported patch or mitigation from the primary advisory.
  3. Rescan the exact deployed revision and retain verification evidence.
Review primary references

Evidence coverage

CVENVDEPSS
SSVC priority
LOW
Confidence
Not available
Aliases
None reported

Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.

Sources and record history

  1. 3047 ↗
  2. ADV-2007-2953 ↗
  3. downloads.digium.com ↗
  4. 25392 ↗
  5. 20070821 AST-2007-020: Resource Exhaustion Vulnerability in Asterisk SIP channel driver ↗
  6. asterisk-sip-dialoghistory-dos(36145) ↗
  7. 26553 ↗
  8. 1018595 ↗

Record history

Published Aug 22, 2007 · Last refreshed Oct 23, 2026

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