EulerOS Virtualization 3.0.2.6 : qemu-kvm (EulerOS-SA-2021-2855)

medium Nessus Plugin ID 156489

Synopsis

The remote EulerOS Virtualization host is missing multiple security updates.

Description

According to the versions of the qemu-kvm packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

- sd_wp_addr in hw/sd/sd.c in QEMU 4.2.0 uses an unvalidated address, which leads to an out-of-bounds read during sdhci_write() operations. A guest OS user can crash the QEMU process. (CVE-2020-13253)

- In QEMU 5.0.0 and earlier, es1370_transfer_audio in hw/audio/es1370.c does not properly validate the frame count, which allows guest OS users to trigger an out-of-bounds access during an es1370_write() operation.
(CVE-2020-13361)

- In QEMU 5.0.0 and earlier, megasas_lookup_frame in hw/scsi/megasas.c has an out-of-bounds read via a crafted reply_queue_head field from a guest OS user. (CVE-2020-13362)

- address_space_map in exec.c in QEMU 4.2.0 can trigger a NULL pointer dereference related to BounceBuffer.
(CVE-2020-13659)

- hw/pci/msix.c in QEMU 4.2.0 allows guest OS users to trigger an out-of-bounds access via a crafted address in an msi-x mmio operation. (CVE-2020-13754)

- hw/pci/pci.c in QEMU 4.2.0 allows guest OS users to trigger an out-of-bounds access by providing an address near the end of the PCI configuration space. (CVE-2020-13791)

- In QEMU through 5.0.0, an assertion failure can occur in the network packet processing. This issue affects the e1000e and vmxnet3 network devices. A malicious guest user/process could use this flaw to abort the QEMU process on the host, resulting in a denial of service condition in net_tx_pkt_add_raw_fragment in hw/net/net_tx_pkt.c. (CVE-2020-16092)

- A heap-based buffer overflow was found in QEMU through 5.0.0 in the SDHCI device emulation support. It could occur while doing a multi block SDMA transfer via the sdhci_sdma_transfer_multi_blocks() routine in hw/sd/sdhci.c. A guest user or process could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition, or potentially execute arbitrary code with privileges of the QEMU process on the host. (CVE-2020-17380)

- QEMU 5.0.0 has a heap-based Buffer Overflow in flatview_read_continue in exec.c because hw/sd/sdhci.c mishandles a write operation in the SDHC_BLKSIZE case. (CVE-2020-25085)

- hw/usb/hcd-ohci.c in QEMU 5.0.0 has a stack-based buffer over-read via values obtained from the host controller driver. (CVE-2020-25624)

- hw/usb/hcd-ohci.c in QEMU 5.0.0 has an infinite loop when a TD list has a loop. (CVE-2020-25625)

- eth_get_gso_type in net/eth.c in QEMU 4.2.1 allows guest OS users to trigger an assertion failure. A guest can crash the QEMU process via packet data that lacks a valid Layer 3 protocol. (CVE-2020-27617)

- hw/net/e1000e_core.c in QEMU 5.0.0 has an infinite loop via an RX descriptor with a NULL buffer address.
(CVE-2020-28916)

- The patch for CVE-2020-17380/CVE-2020-25085 was found to be ineffective, thus making QEMU vulnerable to the out-of-bounds read/write access issues previously found in the SDHCI controller emulation code. This flaw allows a malicious privileged guest to crash the QEMU process on the host, resulting in a denial of service or potential code execution. QEMU up to (including) 5.2.0 is affected by this. (CVE-2021-3409)

- A potential stack overflow via infinite loop issue was found in various NIC emulators of QEMU in versions up to and including 5.2.0. The issue occurs in loopback mode of a NIC wherein reentrant DMA checks get bypassed. A guest user/process may use this flaw to consume CPU cycles or crash the QEMU process on the host resulting in DoS scenario. (CVE-2021-3416)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected qemu-kvm packages.

See Also

http://www.nessus.org/u?b23d4511

Plugin Details

Severity: Medium

ID: 156489

File Name: EulerOS_SA-2021-2855.nasl

Version: 1.3

Type: local

Published: 1/6/2022

Updated: 5/6/2022

Risk Information

CVSS Score Source: CVE-2021-3409

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: Medium

Base Score: 6.7

Temporal Score: 5.8

Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:huawei:euleros:qemu-gpu-specs, p-cpe:/a:huawei:euleros:qemu-guest-agent, p-cpe:/a:huawei:euleros:qemu-img, p-cpe:/a:huawei:euleros:qemu-kvm, p-cpe:/a:huawei:euleros:qemu-kvm-common, p-cpe:/a:huawei:euleros:qemu-kvm-tools, p-cpe:/a:huawei:euleros:qemu-seabios, cpe:/o:huawei:euleros:uvp:3.0.2.6

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/EulerOS/release, Host/EulerOS/rpm-list, Host/EulerOS/uvp_version

Exploit Ease: No known exploits are available

Patch Publication Date: 12/30/2021

Vulnerability Publication Date: 5/7/2020

Reference Information

CVE: CVE-2020-13253, CVE-2020-13361, CVE-2020-13362, CVE-2020-13659, CVE-2020-13754, CVE-2020-13791, CVE-2020-16092, CVE-2020-17380, CVE-2020-25085, CVE-2020-25624, CVE-2020-25625, CVE-2020-27617, CVE-2020-28916, CVE-2021-3409, CVE-2021-3416

IAVB: 2020-B-0026-S, 2020-B-0041-S, 2020-B-0063-S, 2020-B-0075