Asterisk RTP payload buffer overflow
| asterisk-rtppayload-bo (41302) |  High Risk |
Description:
Asterisk is vulnerable to a buffer overflow, caused by improper bounds checking by the RTP payload handling code. By sending a specially-crafted INVITE or SIP packet with SDP containing an overly large payload, a remote attacker could overflow a buffer and write a 0 into specific memory locations or possibly execute arbitrary code on the system.
*CVSS:
| Base Score: | 7.5 |
| Access Vector: | Network |
| Access Complexity: | Low |
| Authentication: | None |
| Confidentiality Impact: | Partial |
| Integrity Impact: | Partial |
| Availability Impact: | Partial |
| Temporal Score: | 5.5 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Gain Access
Remedy:
Refer to AST-2008-002 for patch, upgrade or suggested workaround information. See References.
References:
- AST-2008-002: Two buffer overflows in RTP Codec Payload Handling.
- BID-28308: Asterisk RTP Codec Payload Handling Multiple Buffer Overflow Vulnerabilities
- CVE-2008-1289: Multiple buffer overflows in Asterisk Open Source 1.4.x before 1.4.18.1 and 1.4.19-rc3, Open Source 1.6.x before 1.6.0-beta6, Business Edition C.x.x before C.1.6.1, AsteriskNOW 1.0.x before 1.0.2, Appliance Developer Kit before 1.4 revision 109386, and s800i 1.1.x before 1.1.0.2 allow remote attackers to (1) write a zero to an arbitrary memory location via a large RTP payload number, related to the ast_rtp_unset_m_type function in main/rtp.c; or (2) write certain integers to an arbitrary memory location via a large number of RTP payloads, related to the process_sdp function in channels/chan_sip.c.
- SA29426: Asterisk Multiple Vulnerabilities
- SECTRACK ID: 1019628: Asterisk Buffer Overflow in Processing RTP Codec Payload Lets Remote Users Execute Arbitrary Code
- VUPEN/ADV-2008-0928: Asterisk Products Buffer Overflow and Security Bypass Vulnerabilities
Platforms Affected:
- Digium Asterisk Appliance Developer Kit SVN prior to 1.4 rev.109386
- Digium Asterisk Business Edition C.x.x prior to C.1.6.1
- Digium Asterisk Open Source 1.4.x prior to 1.4.18.1
- Digium Asterisk Open Source 1.4.x prior to 1.4.19-rc3
- Digium Asterisk Open Source 1.6.x prior to 1.6.0-beta6
- Digium AsteriskNOW 1.0.x prior to 1.0.2
- Digium s800i 1.1.x prior to 1.1.0.2
Reported:
Mar 18, 2008
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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.