SB2015110603 - Multiple vulnerabilities in QEMU

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Main Vulnerability Database SB2015110603

SB2015110603 - Multiple vulnerabilities in QEMU

Published: November 6, 2015 Updated: August 5, 2020

Security Bulletin ID SB2015110603
Severity
Medium
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 4 secuirty vulnerabilities.


1) Buffer overflow (CVE-ID: CVE-2015-5225)

The vulnerability allows a remote attacker to execute arbitrary code on the hypervisor.

Buffer overflow in the vnc_refresh_server_surface function in the VNC display driver in QEMU before 2.4.0.1 allows guest users to cause a denial of service (heap memory corruption and process crash) or possibly execute arbitrary code on the host via unspecified vectors, related to refreshing the server display surface.

2) Infinite loop (CVE-ID: CVE-2015-6815)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to infinite loop within the process_tx_desc() function in hw/net/e1000.c in QEMU. A remote attacker can consume all available system resources and cause denial of service conditions.


3) Infinite loop (CVE-ID: CVE-2015-5278)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to infinite loop within the ne2000_receive() function in hw/net/ne2000.c in QEMU. A remote attacker can consume all available system resources and cause denial of service conditions.


4) Heap-based buffer overflow (CVE-ID: CVE-2015-5279)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in the ne2000_receive function in hw/net/ne2000.c in QEMU before 2.4.0.1. A remote attacker can use vectors related to receiving packets. to trigger heap-based buffer overflow and 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