SB2017113050 - Red Hat update for qemu-kvm-rhev
Published: November 30, 2017
Security Bulletin ID
SB2017113050
Severity
High
Patch available
YES
Number of vulnerabilities
3
Exploitation vector
Adjecent network
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 secuirty vulnerabilities.
1) Out-of-bounds read (CVE-ID: CVE-2017-11334)
The vulnerability allows an adjacent authenticated attacker to cause DoS condition on the target system.The weakness exists due to out-of-bounds read. An adjacent attacker can cause the service to crash by leveraging use of qemu_map_ram_ptr to access guest ram block area.
2) Memory corruption (CVE-ID: CVE-2017-14167)
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.
3) Out-of-bounds write (CVE-ID: CVE-2017-15289)
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.