HOMEVULNERABILITIESCVE-2012-3863
MEDIUM

CVE-2012-3863

CWE-399Published: July 9, 2012· Updated: Jun 16, 2026

4.0
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2012-3863 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityNone
IntegrityNone
AvailabilityP
AV:N/AC:L/Au:S/C:N/I:N/A:P

Affected Vendors & Products

digium4 product(s)
asterisk business editionasteriskasteriskecertified asterisk
Source: NVD CPE · 53 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttp://downloads.asterisk.org/pub/security/AST-2012-010.html
PATCHhttp://downloads.asterisk.org/pub/security/AST-2012-010.html

All References (12)

→
http://downloads.asterisk.org/pub/security/AST-2012-010.htmlPatch · Vendor Advisory
→
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
→
http://downloads.asterisk.org/pub/security/AST-2012-010.htmlPatch · Vendor Advisory
→
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

Quick Facts

CVE IDCVE-2012-3863
CVSS Score4.0 / 10
SeverityMEDIUM
WeaknessCWE-399
CISA KEVNo
Affected1 vendor(s)
PublishedJul 9, 2012

Related CVEs (CWE-399)

CVE-2009-0414
10.0
CVE-2009-0352
10.0
CVE-2009-2462
10.0
CVE-2009-2300
10.0
CVE-2009-2465
10.0
CVE-2009-0353
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2012-3863 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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