CVE-2008-2543

The ooh323 channel driver in Asterisk Addons 1.2.x before 1.2.9 and Asterisk-Addons 1.4.x before 1.4.7 creates a remotely accessible TCP port that is intended solely for localhost communication, and interprets some TCP application-data fields as addresses of memory to free, which allows remote attackers to cause a denial of service (daemon crash) via crafted TCP packets.

Published: 2008-06-05 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2008-2543 is rated Moderate Risk (52.7/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 3.62%). EPSS rose +1.90% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2008-2543

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 1.73% 3.62% +1.90%
2 2025-12-18 1.93% 1.73% -0.20%
3 2025-10-30 — 1.93% —

Full EPSS history (15 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2008-2543

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2008-2543

OS Trackers for CVE-2008-2543

vendor priority summary link
ubuntu low CVE-2008-2543 low priority: Ubuntu including 1 source packages (asterisk-addons), 11 status rows across 11 suites (dapper, feisty, gutsy, hardy, intrepid, jaunty, karmic, lucid, maverick, natty, upstream): not-affected 6, DNE 3, ignored 1, released 1. https://ubuntu.com/security/CVE-2008-2543

Affected software / configurations for CVE-2008-2543

Vendor Product Version Raw CPE
asterisk asterisk-addons 1.2.0 cpe:2.3:a:asterisk:asterisk-addons:1.2.0:*:*:*:*:*:*:*
asterisk asterisk-addons 1.2.1 cpe:2.3:a:asterisk:asterisk-addons:1.2.1:*:*:*:*:*:*:*
asterisk asterisk-addons 1.2.2 cpe:2.3:a:asterisk:asterisk-addons:1.2.2:*:*:*:*:*:*:*
asterisk asterisk-addons 1.2.3 cpe:2.3:a:asterisk:asterisk-addons:1.2.3:*:*:*:*:*:*:*
asterisk asterisk-addons 1.2.4 cpe:2.3:a:asterisk:asterisk-addons:1.2.4:*:*:*:*:*:*:*
asterisk asterisk-addons 1.2.5 cpe:2.3:a:asterisk:asterisk-addons:1.2.5:*:*:*:*:*:*:*
asterisk asterisk-addons 1.2.6 cpe:2.3:a:asterisk:asterisk-addons:1.2.6:*:*:*:*:*:*:*
asterisk asterisk-addons 1.2.7 cpe:2.3:a:asterisk:asterisk-addons:1.2.7:*:*:*:*:*:*:*
asterisk asterisk-addons 1.2.8 cpe:2.3:a:asterisk:asterisk-addons:1.2.8:*:*:*:*:*:*:*
asterisk asterisk-addons 1.4.0 cpe:2.3:a:asterisk:asterisk-addons:1.4.0:*:*:*:*:*:*:*
asterisk asterisk-addons 1.4.1 cpe:2.3:a:asterisk:asterisk-addons:1.4.1:*:*:*:*:*:*:*
asterisk asterisk-addons 1.4.2 cpe:2.3:a:asterisk:asterisk-addons:1.4.2:*:*:*:*:*:*:*
asterisk asterisk-addons 1.4.3 cpe:2.3:a:asterisk:asterisk-addons:1.4.3:*:*:*:*:*:*:*
asterisk asterisk-addons 1.4.4 cpe:2.3:a:asterisk:asterisk-addons:1.4.4:*:*:*:*:*:*:*
asterisk asterisk-addons 1.4.5 cpe:2.3:a:asterisk:asterisk-addons:1.4.5:*:*:*:*:*:*:*
asterisk asterisk-addons 1.4.6 cpe:2.3:a:asterisk:asterisk-addons:1.4.6:*:*:*:*:*:*:*

References for CVE-2008-2543

cvelogic Threat Intelligence