SB2017100226 - Heap-based buffer overflow in dnsmasq (Alpine package)
Published: October 2, 2017
Security Bulletin ID
SB2017100226
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Heap-based buffer overflow (CVE-ID: CVE-2017-14492)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to boundary error when processing IPv6 router advertisements. A remote unauthenticated attacker on local network can send specially crafted IPv6 router advertisement to the affected service, trigger heap-based buffer overflow and crash the service or execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=3640e0ea2d3be8fc17d71b9faad5a0b8806d7f78
- https://git.alpinelinux.org/aports/commit/?id=3afe33ad348010beb44371a68febd5f2f252299a
- https://git.alpinelinux.org/aports/commit/?id=43dd2c9dbd748d5b095ba9eec3da18255d5bd158
- https://git.alpinelinux.org/aports/commit/?id=e2b7176ff9d902f7e8837d4a7ef0d560c903fc35