SB2018050601 - Fedora 27 update for asterisk

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Main Vulnerability Database SB2018050601

SB2018050601 - Fedora 27 update for asterisk

Published: May 6, 2018 Updated: April 24, 2025

Security Bulletin ID SB2018050601
CSH Severity
High
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 25% Low 75%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 4 vulnerabilities.


1) Improper input validation (CVE-ID: CVE-2018-7285)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear


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)

CWE-ID: CWE-190 - Integer overflow

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear


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)

CWE-ID: CWE-120 - Buffer overflow

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber


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)

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


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.

References