CVE-2007-4103

HIGH
7.5
CVSS Score
Published: July 31, 2007 at 10:00 AM UTC
Updated: June 16, 2026 at 10:43 PM UTC
2 products affected across 1 vendorAsteriskAsterisk Appliance Developer Kit

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Severity
HIGH7.5
Exploit prediction
EPSS 6%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

1.2.20 ≤ v < 1.2.231.4.0 ≤ v < 1.4.9
Affected range stops below 1.2.23, so it looks safe — our inference, not a vendor statement
Affected range stops below 1.4.9, so it looks safe — our inference, not a vendor statement
v < 0.6.0
Affected range stops below 0.6.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (11)

x_refsource_CONFIRMIssue TrackingPatch
http://bugs.gentoo.org/show_bug.cgi?id=185713
x_refsource_CONFIRMBroken LinkPatch
http://ftp.digium.com/pub/asa/ASA-2007-018.pdf
VDB Entryx_refsource_OSVDBBroken Link
http://osvdb.org/38197
Third Party Advisoryx_refsource_SECUNIABroken LinkPatchVendor Advisory
http://secunia.com/advisories/26274
Third Party Advisoryx_refsource_SECUNIABroken Link
http://secunia.com/advisories/29051
Vendor Advisoryx_refsource_GENTOOThird Party Advisory
http://security.gentoo.org/glsa/glsa-200802-11.xml
Third Party Advisoryx_refsource_SREASONBroken Link
http://securityreason.com/securityalert/2960
Mailing Listx_refsource_BUGTRAQBroken LinkThird Party AdvisoryVDB Entry
http://www.securityfocus.com/archive/1/475069/100/0/threaded

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-772

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