CVE-2012-3863

channels/chan_sip.c in Asterisk Open Source 1.8.x before 1.8.13.1 and 10.x before 10.5.2, Asterisk Business Edition C.3.x before C.3.7.5, Certified Asterisk 1.8.11-certx before 1.8.11-cert4, and Asterisk Digiumphones 10.x.x-digiumphones before 10.5.2-digiumphones does not properly handle a provisional response to a SIP reINVITE request, which allows remote authenticated users to cause a denial of service (RTP port exhaustion) via sessions that lack final responses.

Published: 2012-07-09 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2012-3863 is rated Moderate Risk (42.3/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 3.20%). 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-2012-3863

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 7.19% 3.20% -3.99%
2 2025-03-30 33.68% 7.19% -26.49%
3 2025-03-29 — 33.68% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2012-3863

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.0 2.0 MEDIUM
AV:N/AC:L/Au:S/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:S)
A single authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.0 2.9 [email protected]

Weakness enumeration for CVE-2012-3863

OS Trackers for CVE-2012-3863

vendor priority summary link
debian not yet assigned CVE-2012-3863 not yet assigned priority: Debian including 1 source packages (asterisk), 2 status rows across 2 suites (bullseye, sid): resolved 2. https://security-tracker.debian.org/tracker/CVE-2012-3863
gentoo normal CVE-2012-3863: 1 GLSA(s) (201209-15), 1 atom(s) (net-misc/asterisk); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2012-3863
ubuntu medium CVE-2012-3863 medium priority: Ubuntu including 1 source packages (asterisk), 16 status rows across 16 suites (hardy, lucid, natty, oneiric, precise, quantal, raring, saucy, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): not-affected 9, ignored 5, DNE 1, released 1. https://ubuntu.com/security/CVE-2012-3863

Affected software / configurations for CVE-2012-3863

Vendor Product Version Raw CPE
digium asterisk_business_edition c.3.1 cpe:2.3:a:digium:asterisk_business_edition:c.3.1:*:*:*:*:*:*:*
digium asterisk_business_edition c.3.3 cpe:2.3:a:digium:asterisk_business_edition:c.3.3:*:*:*:*:*:*:*
digium asterisk_business_edition c.3.7.4 cpe:2.3:a:digium:asterisk_business_edition:c.3.7.4:*:*:*:*:*:*:*
digium asterisk 1.8.0 cpe:2.3:a:digium:asterisk:1.8.0:*:*:*:*:*:*:*
digium asterisk 1.8.0 cpe:2.3:a:digium:asterisk:1.8.0:beta1:*:*:*:*:*:*
digium asterisk 1.8.0 cpe:2.3:a:digium:asterisk:1.8.0:beta2:*:*:*:*:*:*
digium asterisk 1.8.0 cpe:2.3:a:digium:asterisk:1.8.0:beta3:*:*:*:*:*:*
digium asterisk 1.8.0 cpe:2.3:a:digium:asterisk:1.8.0:beta4:*:*:*:*:*:*
digium asterisk 1.8.0 cpe:2.3:a:digium:asterisk:1.8.0:beta5:*:*:*:*:*:*
digium asterisk 1.8.0 cpe:2.3:a:digium:asterisk:1.8.0:rc2:*:*:*:*:*:*
digium asterisk 1.8.0 cpe:2.3:a:digium:asterisk:1.8.0:rc3:*:*:*:*:*:*
digium asterisk 1.8.0 cpe:2.3:a:digium:asterisk:1.8.0:rc4:*:*:*:*:*:*
digium asterisk 1.8.0 cpe:2.3:a:digium:asterisk:1.8.0:rc5:*:*:*:*:*:*
digium asterisk 1.8.1 cpe:2.3:a:digium:asterisk:1.8.1:*:*:*:*:*:*:*
digium asterisk 1.8.1 cpe:2.3:a:digium:asterisk:1.8.1:rc1:*:*:*:*:*:*
digium asterisk 1.8.1.1 cpe:2.3:a:digium:asterisk:1.8.1.1:*:*:*:*:*:*:*
digium asterisk 1.8.1.2 cpe:2.3:a:digium:asterisk:1.8.1.2:*:*:*:*:*:*:*
digium asterisk 1.8.2 cpe:2.3:a:digium:asterisk:1.8.2:*:*:*:*:*:*:*
digium asterisk 1.8.2.1 cpe:2.3:a:digium:asterisk:1.8.2.1:*:*:*:*:*:*:*
digium asterisk 1.8.2.2 cpe:2.3:a:digium:asterisk:1.8.2.2:*:*:*:*:*:*:*
digium asterisk 1.8.2.3 cpe:2.3:a:digium:asterisk:1.8.2.3:*:*:*:*:*:*:*
digium asterisk 1.8.2.4 cpe:2.3:a:digium:asterisk:1.8.2.4:*:*:*:*:*:*:*
digium asterisk 1.8.3 cpe:2.3:a:digium:asterisk:1.8.3:*:*:*:*:*:*:*
digium asterisk 1.8.3 cpe:2.3:a:digium:asterisk:1.8.3:rc1:*:*:*:*:*:*
digium asterisk 1.8.3 cpe:2.3:a:digium:asterisk:1.8.3:rc2:*:*:*:*:*:*
digium asterisk 1.8.3 cpe:2.3:a:digium:asterisk:1.8.3:rc3:*:*:*:*:*:*
digium asterisk 1.8.3.1 cpe:2.3:a:digium:asterisk:1.8.3.1:*:*:*:*:*:*:*
digium asterisk 1.8.3.2 cpe:2.3:a:digium:asterisk:1.8.3.2:*:*:*:*:*:*:*
digium asterisk 1.8.3.3 cpe:2.3:a:digium:asterisk:1.8.3.3:*:*:*:*:*:*:*
digium asterisk 1.8.4 cpe:2.3:a:digium:asterisk:1.8.4:*:*:*:*:*:*:*
digium asterisk 1.8.4 cpe:2.3:a:digium:asterisk:1.8.4:rc1:*:*:*:*:*:*
digium asterisk 1.8.4 cpe:2.3:a:digium:asterisk:1.8.4:rc2:*:*:*:*:*:*
digium asterisk 1.8.4 cpe:2.3:a:digium:asterisk:1.8.4:rc3:*:*:*:*:*:*
digium asterisk 1.8.4.1 cpe:2.3:a:digium:asterisk:1.8.4.1:*:*:*:*:*:*:*
digium asterisk 1.8.4.2 cpe:2.3:a:digium:asterisk:1.8.4.2:*:*:*:*:*:*:*
digium asterisk 1.8.4.3 cpe:2.3:a:digium:asterisk:1.8.4.3:*:*:*:*:*:*:*
digium asterisk 1.8.4.4 cpe:2.3:a:digium:asterisk:1.8.4.4:*:*:*:*:*:*:*
digium asterisk 1.8.5 cpe:2.3:a:digium:asterisk:1.8.5:*:*:*:*:*:*:*
digium asterisk 1.8.5 cpe:2.3:a:digium:asterisk:1.8.5:rc1:*:*:*:*:*:*
digium asterisk 1.8.5.0 cpe:2.3:a:digium:asterisk:1.8.5.0:*:*:*:*:*:*:*
digium asterisk 1.8.6.0 cpe:2.3:a:digium:asterisk:1.8.6.0:*:*:*:*:*:*:*
digium asterisk 1.8.6.0 cpe:2.3:a:digium:asterisk:1.8.6.0:rc1:*:*:*:*:*:*
digium asterisk 1.8.6.0 cpe:2.3:a:digium:asterisk:1.8.6.0:rc2:*:*:*:*:*:*
digium asterisk 1.8.6.0 cpe:2.3:a:digium:asterisk:1.8.6.0:rc3:*:*:*:*:*:*
digium asterisk 1.8.7.0 cpe:2.3:a:digium:asterisk:1.8.7.0:*:*:*:*:*:*:*
digium asterisk 1.8.7.0 cpe:2.3:a:digium:asterisk:1.8.7.0:rc1:*:*:*:*:*:*
digium asterisk 1.8.7.0 cpe:2.3:a:digium:asterisk:1.8.7.0:rc2:*:*:*:*:*:*
digium asterisk 1.8.7.1 cpe:2.3:a:digium:asterisk:1.8.7.1:*:*:*:*:*:*:*
digium asterisk 1.8.8.0 cpe:2.3:a:digium:asterisk:1.8.8.0:*:*:*:*:*:*:*
digium asterisk 1.8.8.0 cpe:2.3:a:digium:asterisk:1.8.8.0:rc1:*:*:*:*:*:*
digium asterisk 1.8.8.0 cpe:2.3:a:digium:asterisk:1.8.8.0:rc2:*:*:*:*:*:*
digium asterisk 1.8.8.0 cpe:2.3:a:digium:asterisk:1.8.8.0:rc3:*:*:*:*:*:*
digium asterisk 1.8.8.0 cpe:2.3:a:digium:asterisk:1.8.8.0:rc5:*:*:*:*:*:*
digium asterisk 1.8.8.1 cpe:2.3:a:digium:asterisk:1.8.8.1:*:*:*:*:*:*:*
digium asterisk 1.8.8.2 cpe:2.3:a:digium:asterisk:1.8.8.2:*:*:*:*:*:*:*
digium asterisk 1.8.9.0 cpe:2.3:a:digium:asterisk:1.8.9.0:*:*:*:*:*:*:*
digium asterisk 1.8.9.0 cpe:2.3:a:digium:asterisk:1.8.9.0:rc1:*:*:*:*:*:*
digium asterisk 1.8.9.0 cpe:2.3:a:digium:asterisk:1.8.9.0:rc2:*:*:*:*:*:*
digium asterisk 1.8.9.0 cpe:2.3:a:digium:asterisk:1.8.9.0:rc3:*:*:*:*:*:*
digium asterisk 1.8.9.2 cpe:2.3:a:digium:asterisk:1.8.9.2:*:*:*:*:*:*:*
digium asterisk 1.8.9.3 cpe:2.3:a:digium:asterisk:1.8.9.3:*:*:*:*:*:*:*
digium asterisk 1.8.11.0 cpe:2.3:a:digium:asterisk:1.8.11.0:*:*:*:*:*:*:*
digium asterisk 1.8.11.0 cpe:2.3:a:digium:asterisk:1.8.11.0:rc2:*:*:*:*:*:*
digium asterisk 1.8.11.0 cpe:2.3:a:digium:asterisk:1.8.11.0:rc3:*:*:*:*:*:*
digium asterisk 1.8.11.1 cpe:2.3:a:digium:asterisk:1.8.11.1:*:*:*:*:*:*:*
digium asterisk 1.8.13.0 cpe:2.3:a:digium:asterisk:1.8.13.0:*:*:*:*:*:*:*
digium asterisk 1.8.13.0 cpe:2.3:a:digium:asterisk:1.8.13.0:rc1:*:*:*:*:*:*
digium asterisk 1.8.13.0 cpe:2.3:a:digium:asterisk:1.8.13.0:rc2:*:*:*:*:*:*
digium asteriske 1.8.8.0 cpe:2.3:a:digium:asteriske:1.8.8.0:rc4:*:*:*:*:*:*
digium asteriske 1.8.9.1 cpe:2.3:a:digium:asteriske:1.8.9.1:*:*:*:*:*:*:*
digium certified_asterisk 1.8.11 cpe:2.3:a:digium:certified_asterisk:1.8.11:cert:*:*:*:*:*:*
digium certified_asterisk 1.8.11 cpe:2.3:a:digium:certified_asterisk:1.8.11:cert1:*:*:*:*:*:*
digium asterisk 10.0.0 cpe:2.3:a:digium:asterisk:10.0.0:*:digiumphones:*:*:*:*:*
digium asterisk 10.0.0 cpe:2.3:a:digium:asterisk:10.0.0:beta1:digiumphones:*:*:*:*:*
digium asterisk 10.0.0 cpe:2.3:a:digium:asterisk:10.0.0:beta2:digiumphones:*:*:*:*:*
digium asterisk 10.0.0 cpe:2.3:a:digium:asterisk:10.0.0:rc1:digiumphones:*:*:*:*:*
digium asterisk 10.0.0 cpe:2.3:a:digium:asterisk:10.0.0:rc2:digiumphones:*:*:*:*:*
digium asterisk 10.0.0 cpe:2.3:a:digium:asterisk:10.0.0:rc3:digiumphones:*:*:*:*:*
digium asterisk 10.1.0 cpe:2.3:a:digium:asterisk:10.1.0:*:digiumphones:*:*:*:*:*
digium asterisk 10.1.0 cpe:2.3:a:digium:asterisk:10.1.0:rc1:digiumphones:*:*:*:*:*

References for CVE-2012-3863

cvelogic Threat Intelligence