SB2017120745 - Use-after-free in samba (Alpine package)
Published: December 7, 2017
Security Bulletin ID
SB2017120745
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) Use-after-free (CVE-ID: CVE-2017-14746)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.The vulnerability exists due to a use-after-free error when processing SMB1 requests. A remote attacker can send a specially crafted SMB1 request to vulnerable server, trigger heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable SMB server.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=6245a2ceb9dc360ca5f8beb4419ea14952923a37
- https://git.alpinelinux.org/aports/commit/?id=009040103407533ea980becb5012c7d386900453
- https://git.alpinelinux.org/aports/commit/?id=9bc23b7dcfc97e7686a3bf86040af5b192e3cd52
- https://git.alpinelinux.org/aports/commit/?id=8b1320cfb5bc14ab3b588a3fb25b4b80d6f4fb39