SB2017122006 - Amazon Linux AMI update for qemu-kvm
Published: December 20, 2017
Security Bulletin ID
SB2017122006
CSH Severity
High
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 vulnerabilities.
1) Memory corruption (CVE-ID: CVE-2017-14167)
CWE-ID: CWE-119 - Memory corruption
CVSSv4: CVSS:4.0/AV:A/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 an adjacent attacker to execute arbitrary code on the target system.
The weakness exists in the load_multiboot function in hw/i386/multiboot.c due to integer overflow. An adjacent attacker can execute arbitrary code via specially crafted multiboot header address values, which trigger an out-of-bounds write.
Successful exploitation of the vulnerability may result in system compromise.
2) Out-of-bounds write (CVE-ID: CVE-2017-15289)
CWE-ID: CWE-787 - Out-of-bounds write
CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows an adjacent authenticated attacker to cause DoS condition on the target system.
The weakness exists in the mode4and5 write functions in hw/display/cirrus_vga.c due to out-of-bounds write. An adjacent attacker can trigger memory corruption and cause the service to crash via vectors related to dst calculation.
Remediation
Install update from vendor's website.