An issue was discovered in QEMU through 5.1.0. An out-of-bounds memory access was found in the ATI VGA device implementation. This flaw occurs in the ati_2d_blt() routine in hw/display/ati_2d.c while handling MMIO write operations through the ati_mm_write() callback. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - An issue was discovered in QEMU through 5.1.0. An out-of-bounds memory access was found in the ATI VGA     device implementation. This flaw occurs in the ati_2d_blt() routine in hw/display/ati_2d.c while handling     MMIO write operations through the ati_mm_write() callback. A malicious guest could use this flaw to crash     the QEMU process on the host, resulting in a denial of service. (CVE-2020-24352)

Note that Nessus relies on the presence of the package as reported by the vendor.

There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

  - A flaw was found in qemu. A host privilege escalation issue was found in the virtio-fs shared file system
    daemon where a privileged guest user is able to create a device special file in the shared directory and
    use it to r/w access host devices. (CVE-2020-35517)

  - An issue was discovered in QEMU through 5.1.0. An out-of-bounds memory access was found in the ATI VGA
    device implementation. This flaw occurs in the ati_2d_blt() routine in hw/display/ati_2d.c while handling
    MMIO write operations through the ati_mm_write() callback. A malicious guest could use this flaw to crash
    the QEMU process on the host, resulting in a denial of service. (CVE-2020-24352)

  - A reachable assertion issue was found in the USB EHCI emulation code of QEMU. It could occur while
    processing USB requests due to missing handling of DMA memory map failure. A malicious privileged user
    within the guest may abuse this flaw to send bogus USB requests and crash the QEMU process on the host,
    resulting in a denial of service. (CVE-2020-25723)

  - pci_change_irq_level in hw/pci/pci.c in QEMU before 5.1.1 has a NULL pointer dereference because
    pci_get_bus() might not return a valid pointer. (CVE-2020-25742)

  - hw/ide/pci.c in QEMU before 5.1.1 can trigger a NULL pointer dereference because it lacks a pointer check
    before an ide_cancel_dma_sync call. (CVE-2020-25743)

This update for qemu fixes the following issues :

CVE-2020-14364: Fixed an OOB access while processing USB packets (bsc#1175441,bsc#1176494).

CVE-2020-16092: Fixed a denial of service in packet processing of various emulated NICs (bsc#1174641).

CVE-2020-15863: Fixed a buffer overflow in the XGMAC device (bsc#1174386).

CVE-2020-24352: Fixed an out-of-bounds read/write in ati-vga device emulation in ati_2d_blt (bsc#1175370).

Allow to IPL secure guests with -no-reboot (bsc#1174863)

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

This update for qemu fixes the following issues :

  - CVE-2020-14364: Fixed an OOB access while processing USB     packets (bsc#1175441,bsc#1176494).

  - CVE-2020-16092: Fixed a denial of service in packet     processing of various emulated NICs (bsc#1174641).

  - CVE-2020-15863: Fixed a buffer overflow in the XGMAC     device (bsc#1174386).

  - CVE-2020-24352: Fixed an out-of-bounds read/write in     ati-vga device emulation in ati_2d_blt (bsc#1175370).

  - Allow to IPL secure guests with -no-reboot (bsc#1174863)

This update was imported from the SUSE:SLE-15-SP2:Update update project.

ID	Name	Product	Family	Type	Severity
229920	Linux Distros Unpatched Vulnerability : CVE-2020-24352	Nessus	Misc.	Local	medium
406789	Alpine: multiple qemu packages: security update to 5.2.0-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	Local	high
406789	Alpine: multiple qemu packages: security update to 5.2.0-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	Local	high
143815	SUSE SLED15 / SLES15 Security Update : qemu (SUSE-SU-2020:2877-1)	Nessus	SuSE Local Security Checks	Local	medium
141409	openSUSE Security Update : qemu (openSUSE-2020-1664)	Nessus	SuSE Local Security Checks	Local	medium

Detections

Analytics

CVE-2020-24352

medium

Tenable Plugins

medium

high

high

medium

medium