SB2018050601 - Fedora 27 update for asterisk
Published: May 6, 2018 Updated: April 24, 2025
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 secuirty vulnerabilities.
1) Improper input validation (CVE-ID: CVE-2018-7285)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists due to improper input validation. A remote attacker can send a specially crafted RTP data during SDP negotiation, trigger a payload number error and cause the service to crash.
2) Integer overflow (CVE-ID: CVE-2018-1000098)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists in pjmedia SDP parsing due to integer overflow. A remote attacker can submit a specially crafted message, trigger memory corruption and cause the service to crash.
3) Buffer overflow (CVE-ID: CVE-2017-16671)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to boundary error when setting the user field for Party B on a CDR. A remote unauthenticated attacker can send a specially-crafted request, trigger memory corruption and execute arbitrary code with elevated privileges.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
4) Memory leak (CVE-ID: CVE-2017-16672)
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The vulnerability exists due to memory leak in pjsip session resource. A remote unauthenticated attacker can send a specially-crafted request, exhaust available memory and cause the system to crash.
Remediation
Install update from vendor's website.