Back to Database
Status published
Medium
CVE-2011-4063
chan_sip.c in the SIP channel driver in Asterisk Open Source...
Vulnerability Description
chan_sip.c in the SIP channel driver in Asterisk Open Source 1.8.x before 1.8.7.1 and 10.x before 10.0.0-rc1 does not properly initialize variables during request parsing, which allows remote authenticated users to cause a denial of service (daemon crash) via a malformed request.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
THREAT MONITOR
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2011-4063
Credits & Attribution
No credits recorded in the NVD database.
References
- http://www.securitytracker.com/id?1026191
- http://securityreason.com/securityalert/8478
- http://secunia.com/advisories/46420
- http://www.securityfocus.com/archive/1/520141/100/0/threaded
- http://www.securityfocus.com/bid/50177
- https://exchange.xforce.ibmcloud.com/vulnerabilities/70706
- http://downloads.digium.com/pub/security/AST-2011-012.html
More from asterisk
View All →CVE-2025-57767
Asterisk can crash from a specifically malformed Authorization header in an incoming SIP request
High
7.5
CVE-2025-54995
Asterisk remotely exploitable leak of RTP UDP ports and internal resources
Medium
6.5
CVE-2025-49832
Asterisk is Vulnerable to Remote DoS and possible RCE Attacks During Memory Allocation
Medium
6.5
CVE-2025-47780
cli_permissions.conf: deny option does not work for disallowing shell commands
Medium
4.8
CVE-2025-47779
Using malformed From header can forge identity with ";" or NULL in name portion
High
7.7
Affected Vendor
asterisk
View all reports →Affected Software
open source
Vulnerable Versions:
1.8.7, 10.0.0
Timeline
Official Publish:
October 21st, 2011
Last Modified:
August 6th, 2024
Added to House:
July 19th, 2026
CVSS Vectors
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.