Huawei EulerOS: Security Advisory for qemu-kvm (EulerOS-SA-2020-1367)

Published: 2020-04-01 13:55:16
CVE Author: NIST National Vulnerability Database

CVSS Base Vector:
AV:N/AC:L/Au:N/C:N/I:N/A:P

Summary:
The remote host is missing an update for the Huawei EulerOS 'qemu-kvm' Linux Distribution Package(s) announced via the EulerOS-SA-2020-1367 advisory.

Detection Method:
Checks if a vulnerable Linux Distribution Package version is present on the target host.

Technical Details:
Memory leak in the v9fs_list_xattr function in hw/9pfs/9p-xattr.c in QEMU (aka Quick Emulator) allows local guest OS privileged users to cause a denial of service (memory consumption) via vectors involving the orig_value variable.(CVE-2017-8086) The dhcp_decode function in slirp/bootp.c in QEMU (aka Quick Emulator) allows local guest OS users to cause a denial of service (out-of-bounds read and QEMU process crash) via a crafted DHCP options string.(CVE-2017-11434) ** DISPUTED ** QEMU 3.0.0 has an Integer Overflow because the qga/commands*.c files do not check the length of the argument list or the number of environment variables. NOTE: This has been disputed as not exploitable.(CVE-2019-12247) ** DISPUTED ** An issue was discovered in ide_dma_cb() in hw/ide/core.c in QEMU 2.4.0 through 4.2.0. The guest system can crash the QEMU process in the host system via a special SCSI_IOCTL_SEND_COMMAND. It hits an assertion that implies that the size of successful DMA transfers there must be a multiple of 512 (the size of a sector). NOTE: a member of the QEMU security team disputes the significance of this issue because a 'privileged guest user has many ways to cause similar DoS effect, without triggering this assert.'(CVE-2019-20175)

Affected Versions:
'qemu-kvm' Linux Distribution Package(s) on Huawei EulerOS Virtualization for ARM 64 3.0.6.0.

Recommendations:
Please install the updated Linux Distribution Package(s).

Solution Type:
Vendor Patch

Detection Type:
Linux Distribution Package

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2017-11434
https://nvd.nist.gov/vuln/detail/CVE-2017-8086
https://nvd.nist.gov/vuln/detail/CVE-2019-12247
https://nvd.nist.gov/vuln/detail/CVE-2019-20175

References:

https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2020-1367

Severity
Medium
CVSS Score
5.0
Published
2020-04-01
Modified
2020-04-02
Category
Huawei EulerOS Local Security Checks

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