Description
An issue was discovered in Asterisk Open Source through 13.27.0, 14.x and 15.x through 15.7.2, and 16.x through 16.4.0, and Certified Asterisk through 13.21-cert3. A pointer dereference in chan_sip while handling SDP negotiation allows an attacker to crash Asterisk when handling an SDP answer to an outgoing T.38 re-invite. To exploit this vulnerability an attacker must cause the chan_sip module to send a T.38 re-invite request to them. Upon receipt, the attacker must send an SDP answer containing both a T.38 UDPTL stream and another media stream containing only a codec (which is not permitted according to the chan_sip configuration).
CVSS Metrics
- Vector
- CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
- Attack Vector
- network
- Complexity
- high
- Privileges
- low
- User Action
- none
- Scope
- unchanged
- Confidentiality
- none
- Integrity
- none
- Availability
- high
- Weaknesses
- CWE-476
Metadata
- Primary Vendor
- DIGIUM
- Published
- 7/12/2019
- Last Modified
- 11/21/2024
- Source
- NIST NVD
- Note: Verify all details with official vendor sources before applying patches.
Affected Products
digium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : certified_asteriskdigium : asteriskdigium : asteriskdigium : asteriskdebian : debian_linuxdebian : debian_linux
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