SB2017031516 - Memory leak in QEMU

Description

This security bulletin contains information about 1 vulnerability.

1) Memory leak (CVE-ID: CVE-2017-5578)

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

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

The vulnerability exists due to memory leak within the virtio_gpu_resource_attach_backing function in hw/display/virtio-gpu.c in QEMU (aka Quick Emulator) allows local guest OS users to cause a denial of service (host memory consumption) via a large number of VIRTIO_GPU_CMD_RESOURCE_ATTACH_BACKING commands. A remote attacker can perform a denial of service attack.

Remediation

Cybersecurity Help is not aware of any official remediation provided by the vendor.

References

• http://git.qemu.org/?p=qemu.git;a=commit;h=204f01b30975923c64006f8067f0937b91eea68b
• http://www.openwall.com/lists/oss-security/2017/01/23/3
• http://www.openwall.com/lists/oss-security/2017/01/25/2
• http://www.securityfocus.com/bid/95781
• https://security.gentoo.org/glsa/201702-28