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TI-2009-02603 Aliases CVE-2009-2726GHSA-9w42-v5mm-2ffh

The SIP channel driver in Asterisk Open Source 1.2.x before 1.2.34, 1.4.x before…

Priority MEDIUM 43CWE-770Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · Complete
Fix status
No fix listed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-770.

Summary

The SIP channel driver in Asterisk Open Source 1.2.x before 1.2.34, 1.4.x before 1.4.26.1, 1.6.0.x before 1.6.0.12, and 1.6.1.x before 1.6.1.4; Asterisk Business Edition A.x.x, B.x.x before B.2.5.9, C.2.x before C.2.4.1, and C.3.x before C.3.1; and Asterisk Appliance s800i 1.2.x before 1.3.0.3 does not use a maximum width when invoking sscanf style functions, which allows remote attackers to cause a denial of service (stack memory consumption) via SIP packets containing large sequences of ASCII decimal characters, as demonstrated via vectors related to (1) the CSeq value in a SIP header, (2) large Content-Length value, and (3) SDP.

Why it matters now

EPSS 0.06521 93rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:a:digium:asterisk:*:*:business:*:*:*:*:*before b.2.5.9; c.2.0 – c.2.4.1; c.3.0 to before c.3.1VulnerableDigium
cpe:2.3:o:digium:s800i_firmware:*:*:*:*:*:*:*:*1.2.0 to before 1.3.0.3VulnerableDigium
cpe:2.3:h:digium:s800i:-:*:*:*:*:*:*:*not specified by NVDRunning onDigium
cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*1.2.0 to before 1.2.34; 1.4.0 to before 1.4.26.1; 1.6.0 to before 1.6.0.12; 1.6.1 to before 1.6.1.4VulnerableDigium
  • cpe:2.3:a:digium:asterisk:*:*:business:*:*:*:*:* Versions before b.2.5.9; c.2.0 – c.2.4.1; c.3.0 to before c.3.1 Vulnerable ·Digium
  • cpe:2.3:o:digium:s800i_firmware:*:*:*:*:*:*:*:* Versions 1.2.0 to before 1.3.0.3 Vulnerable ·Digium
  • cpe:2.3:h:digium:s800i:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Digium
  • cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:* Versions 1.2.0 to before 1.2.34; 1.4.0 to before 1.4.26.1; 1.6.0 to before 1.6.0.12; 1.6.1 to before 1.6.1.4 Vulnerable ·Digium

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2009-2726
  2. 2026-10-03 Alias added: GHSA-9w42-v5mm-2ffh

References

Advisory 1

Other 2

  • TI-2006-05256 Integer overflow in the get_input function in the Skinny channel driver (chan_skinny.c)… CVSS 2.0HIGH 7.5
  • TI-2017-12542 An issue was discovered in chan_skinny.c in Asterisk Open Source 13.18.2 and older… CVSS 3.0HIGH 7.5
  • TI-2023-27195 Asterisk susceptible to Denial of Service via DTLS Hello packets during call initiation CVSS 3.1HIGH 7.5
  • TI-2017-13083 An issue was discovered in Asterisk 13.18.4 and older, 14.7.4 and older, 15.1.4 and… CVSS 3.0HIGH 7.5
  • TI-2019-13459 An issue was discovered in manager.c in Sangoma Asterisk through 13.x, 16.x, 17.x and… CVSS 3.1HIGH 8.8
  • TI-2018-05283 A Buffer Overflow issue was discovered in Asterisk through 13.19.1, 14.x through 14.7.5… CVSS 3.0HIGH 7.5
See all 113 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences