CVE-2012-3863
CVE-2012-3863 is a medium-severity vulnerability in Digium Asterisk Business Edition with a CVSS 2.0 base score of 4.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-399.
Key facts
- Severity: Medium (CVSS 2.0 base score 4.0)
- EPSS exploit prediction: 3% (87th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-399
- Affected product: Digium Asterisk Business Edition
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is 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.
- How severe is CVE-2012-3863?
- CVE-2012-3863 has a CVSS 2.0 base score of 4.0, rated medium severity.
- Is CVE-2012-3863 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2012-3863?
- CVE-2012-3863 primarily affects Digium Asterisk Business Edition. In total, 131 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2012-3863?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2012-3863 published?
- CVE-2012-3863 was published on 2012-07-09 and last updated on 2026-06-16.
References
- http://downloads.asterisk.org/pub/security/AST-2012-010.html
- http://secunia.com/advisories/50687
- http://secunia.com/advisories/50756
- http://www.debian.org/security/2012/dsa-2550
- http://www.securityfocus.com/bid/54327
- https://issues.asterisk.org/jira/browse/ASTERISK-19992
Affected products (131)
- cpe:2.3:a:digium:asterisk_business_edition:c.3.1:*:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk_business_edition:c.3.3:*:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk_business_edition:c.3.7.4:*:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk:1.8.0:*:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk:1.8.0:beta1:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk:1.8.0:beta2:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk:1.8.0:beta3:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk:1.8.0:beta4:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk:1.8.0:beta5:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk:1.8.0:rc2:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk:1.8.0:rc3:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk:1.8.0:rc4:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk:1.8.0:rc5:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk:1.8.1:*:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk:1.8.1:rc1:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk:1.8.1.1:*:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk:1.8.1.2:*:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk:1.8.2:*:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk:1.8.2.1:*:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk:1.8.2.2:*:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk:1.8.2.3:*:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk:1.8.2.4:*:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk:1.8.3:*:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk:1.8.3:rc1:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk:1.8.3:rc2:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk:1.8.3:rc3:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk:1.8.3.1:*:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk:1.8.3.2:*:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk:1.8.3.3:*:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk:1.8.4:*:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk:1.8.4:rc1:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk:1.8.4:rc2:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk:1.8.4:rc3:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk:1.8.4.1:*:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk:1.8.4.2:*:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk:1.8.4.3:*:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk:1.8.4.4:*:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk:1.8.5:*:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk:1.8.5:rc1:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk:1.8.5.0:*:*:*:*:*:*:*
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