Vulnerability in Digium Asterisk

CVE-2007-4103

The IAX2 channel driver (chan_iax2) in Asterisk Open 1.2.x before 1.2.23, 1.4.x before 1.4.9, and Asterisk Appliance Developer Kit before 0.6.0, when configured to allow unauthenticated calls, allows remote attackers to cause a denial of service (resource exhaustion) via a flood of calls that do not complete a 3-way handshake, which causes an ast_channel to be allocated but not released.

EPSS: 0.059 (92.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

References

  • cve@mitre.org (VDB Entry, Third Party Advisory, vdb-entry, Broken Link, x_refsource_BID)
  • cve@mitre.org (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)
  • cve@mitre.org (x_refsource_SECUNIA, Broken Link, third-party-advisory)
  • cve@mitre.org (x_refsource_CONFIRM, Patch, Issue Tracking)
  • cve@mitre.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_SECTRACK, Broken Link)
  • cve@mitre.org (vdb-entry, Broken Link, x_refsource_VUPEN)
  • cve@mitre.org (mailing-list, x_refsource_BUGTRAQ, VDB Entry, Third Party Advisory, Broken Link)
  • cve@mitre.org (x_refsource_SREASON, Broken Link, third-party-advisory)
  • cve@mitre.org (x_refsource_CONFIRM, Patch, Broken Link)
  • cve@mitre.org (x_refsource_OSVDB, vdb-entry, Broken Link)

Frequently asked questions

What is CVE-2007-4103?
CVE-2007-4103 is a high-severity vulnerability in Digium Asterisk, classified under Missing Release of Resource after Effective Lifetime. CVSS score: 7.5/10. Published 2007-07-31.
How severe is CVE-2007-4103?
High severity. CVSS v3 base score is 7.5 out of 10.