SB2017091812 - Ubuntu update for Linux kernel
Published: September 18, 2017
Security Bulletin ID
SB2017091812
Severity
Low
Patch available
YES
Number of vulnerabilities
2
Exploitation vector
Adjecent network
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 secuirty vulnerabilities.
1) Stack-based buffer overflow (CVE-ID: CVE-2017-1000251)
The vulnerability allows an adjacent attacker to execute arbitrary code on the host system.The weakness exists due to a stack-based buffer overflow in the processing of L2CAP configuration. An adjacent attacker can submit a specially crafted Bluetooth protocol, trigger memory corruption in the Bluetooth stack and execute arbitrary code in kernel space.
Successful exploitation of the vulnerability may result in host system compromise.
2) Privilege escalation (CVE-ID: CVE-2017-10663)
The vulnerability allows a local attacker to gain elevated privileges on the target system.The weakness exists due to improper validation of the blkoff and segno arrays by the sanity_check_ckpt function in fs/f2fs/super.c in the Linux kernel. a local attacker can execute arbitrary code with root privileges.
Remediation
Install update from vendor's website.