CVE-2012-2947 — chan_iax2.c in the IAX2 channel driver in Certified Asterisk 1.8.11-cert before 1.8.11-cert2 and Asterisk Open Source 1.8.x before 1.8.12.1 and 10.x before 10.4.1, when a certain mohinterpret setting is enabled, allows remote attackers to cause a denial of service (daemon crash) by placing a call on hold

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LOW

chan_iax2.c in the IAX2 channel driver in Certified Asterisk 1.8.11-cert before 1.8.11-cert2 and Asterisk Open Source 1.8.x before 1.8.12.1 and 10.x before 10.4.1, when a certain mohinterpret setting is enabled, allows remote attackers to cause a denial of service (daemon crash) by placing a call on hold

Published Jun 2, 2012

2.6

LOW

CVSS 2.0

EPSS 2.33%

Description

chan_iax2.c in the IAX2 channel driver in Certified Asterisk 1.8.11-cert before 1.8.11-cert2 and Asterisk Open Source 1.8.x before 1.8.12.1 and 10.x before 10.4.1, when a certain mohinterpret setting is enabled, allows remote attackers to cause a denial of service (daemon crash) by placing a call on hold.

Affected products

Remediation

No remediation recorded yet.

Metrics

2.33% 0.02333

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.02333

Score over time

2022–2026

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Percentile over time

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Table of values (12 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	2.33% (0.02333)	82.94th	v5 (v2026.06.15)
Jun 15, 2026	2.33% (0.02333)	81.27th	v5 (v2026.06.15)
Mar 30, 2025	4.30% (0.04301)	87.81th	v4 (v2025.03.14)
Mar 29, 2025	24.66% (0.24662)	93.75th	v4 (v2025.03.14)
Mar 17, 2025	4.30% (0.04301)	88.12th	v4 (v2025.03.14)
Dec 12, 2024	1.71% (0.01715)	88.31th	v3 (v2023.03.01)
Jun 13, 2024	1.71% (0.01715)	87.86th	v3 (v2023.03.01)
Mar 7, 2023	1.71% (0.01715)	85.86th	v3 (v2023.03.01)
Mar 6, 2023	1.21% (0.01213)	66.61th	v2 (v2022.01.01)
Feb 17, 2023	1.21% (0.01213)	66.22th	v2 (v2022.01.01)
Apr 1, 2022	1.21% (0.01213)	64.21th	v2 (v2022.01.01)
Feb 4, 2022	1.21% (0.01213)	40.54th	v2 (v2022.01.01)

Weaknesses (1)

CWE-284

References (5)

http://archives.neohapsis.com/archives/bugtraq/2012-05/0144.html
mailing-listx_refsource_BUGTRAQBroken Link
http://downloads.asterisk.org/pub/security/AST-2012-007.html
x_refsource_CONFIRMVendor Advisory
http://secunia.com/advisories/49303
third-party-advisoryx_refsource_SECUNIANot Applicable
http://www.debian.org/security/2012/dsa-2493
vendor-advisoryx_refsource_DEBIANThird Party Advisory
http://www.securitytracker.com/id?1027102
vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry

Link	Providers	Tags
http://archives.neohapsis.com/archives/bugtraq/2012-05/0144.html		mailing-listx_refsource_BUGTRAQBroken Link
http://downloads.asterisk.org/pub/security/AST-2012-007.html		x_refsource_CONFIRMVendor Advisory
http://secunia.com/advisories/49303		third-party-advisoryx_refsource_SECUNIANot Applicable
http://www.debian.org/security/2012/dsa-2493		vendor-advisoryx_refsource_DEBIANThird Party Advisory
http://www.securitytracker.com/id?1027102		vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mitre

Published Jun 2, 2012

Updated Aug 6, 2024

Reserved May 29, 2012

Link CVE-2012-2947

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 16, 2026

Link CVE-2012-2947

Red Hat

Severity n/a

Public date n/a

Links CVE-2012-2947