Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2008-5558

Asterisk Open Source 1.2.26 through 1.2.30.3 and Business Edition B.2.3.5 through B.2.5.5, when realtime IAX2 users are enabled, allows remote attackers to cause a denial of service (crash) via authentication attempts involving (1) an unknown user or (2) a user using hostname matching.

Security Impact Summary

CVE-2008-5558 is a security vulnerability that . Impacting 2 products from asterisk, from asterisk organizations running these solutions should prioritize assessment and patching.

Historical Context

Originally identified in 2008, this vulnerability predates many modern security frameworks and practices. The vulnerability landscape of that era was characterized by different threat models and less mature defense mechanisms compared to contemporary standards.

Published

2008-12-17T17:30:00.407

Last Modified

2025-04-09T00:30:58.490

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 4.3 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

8.6

Impact Score

2.9

Weaknesses

Type: Primary
CWE-287

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	asterisk	asterisk_business_edition	b.2.3.4	Yes
Application	asterisk	asterisk_business_edition	b.2.3.5	Yes
Application	asterisk	asterisk_business_edition	b.2.5.0	Yes
Application	asterisk	asterisk_business_edition	b.2.5.1	Yes
Application	asterisk	asterisk_business_edition	b.2.5.3	Yes
Application	asterisk	open_source	1.2.26	Yes
Application	asterisk	open_source	1.2.26	Yes
Application	asterisk	open_source	1.2.26.1	Yes
Application	asterisk	open_source	1.2.26.1	Yes
Application	asterisk	open_source	1.2.26.2	Yes
Application	asterisk	open_source	1.2.26.2	Yes
Application	asterisk	open_source	1.2.27	Yes
Application	asterisk	open_source	1.2.28	Yes
Application	asterisk	open_source	1.2.29	Yes
Application	asterisk	open_source	1.2.30	Yes
Application	asterisk	open_source	1.2.30.2	Yes
Application	asterisk	open_source	1.2.30.3	Yes

References

http://downloads.digium.com/pub/security/AST-2008-012.html ([email protected])
http://osvdb.org/50675 ([email protected])
http://secunia.com/advisories/32956 Vendor Advisory ([email protected])
http://secunia.com/advisories/34982 ([email protected])
http://security.gentoo.org/glsa/glsa-200905-01.xml ([email protected])
http://securityreason.com/securityalert/4769 ([email protected])
http://www.securityfocus.com/archive/1/499117/100/0/threaded ([email protected])
http://www.securityfocus.com/bid/32773 ([email protected])
http://www.securitytracker.com/id?1021378 ([email protected])
http://www.vupen.com/english/advisories/2008/3403 ([email protected])
http://downloads.digium.com/pub/security/AST-2008-012.html (af854a3a-2127-422b-91ae-364da2661108)
http://osvdb.org/50675 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/32956 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/34982 (af854a3a-2127-422b-91ae-364da2661108)
http://security.gentoo.org/glsa/glsa-200905-01.xml (af854a3a-2127-422b-91ae-364da2661108)
http://securityreason.com/securityalert/4769 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/archive/1/499117/100/0/threaded (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/32773 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id?1021378 (af854a3a-2127-422b-91ae-364da2661108)
http://www.vupen.com/english/advisories/2008/3403 (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For asterisk's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.