SB2018011611 - Denial of service in tinysvcmdns
Published: January 16, 2018
Security Bulletin ID
SB2018011611
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2017-12130)
CWE-ID: CWE-476 - NULL Pointer Dereference
CVSSv4: 6.9 [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]
The vulnerability allows a remote unauthenticated attacker to cause DoS condition on the target system.
The weakness exists in the mdns_parse_qn function due to insufficient validation of user-supplied input. A remote attacker can submit a specially crafted packet to trigger NULL pointer dereference and cause the service to crash.
Remediation
Install update from vendor's website.