A DMA reentrancy issue was found in the Tulip device emulation in QEMU. When Tulip reads or writes to the rx/tx descriptor or copies the rx/tx frame, it doesn't check whether the destination address is its own MMIO address. This can cause the device to trigger MMIO handlers multiple times, possibly leading to a stack or heap overflow. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition.

The remote host is affected by the vulnerability described in GLSA-202408-18 (QEMU: Multiple Vulnerabilities)

    Multiple vulnerabilities have been discovered in QEMU. Please review the CVE identifiers referenced below     for details.

Tenable has extracted the preceding description block directly from the Gentoo Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of qemu / qemu-kvm installed on the remote CBL Mariner 2.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2022-2962 advisory.

  - A DMA reentrancy issue was found in the Tulip device emulation in QEMU. When Tulip reads or writes to the     rx/tx descriptor or copies the rx/tx frame, it doesn't check whether the destination address is its own     MMIO address. This can cause the device to trigger MMIO handlers multiple times, possibly leading to a     stack or heap overflow. A malicious guest could use this flaw to crash the QEMU process on the host,     resulting in a denial of service condition. (CVE-2022-2962)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Ubuntu 16.04 ESM / 18.04 LTS / 20.04 LTS / 22.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5772-1 advisory.

    It was discovered that QEMU incorrectly handled bulk transfers from SPICE clients. A remote attacker could     use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary     code. This issue only affected Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. (CVE-2021-3682)

    It was discovered that QEMU did not properly manage memory when it transfers the USB packets. A malicious     guest attacker could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly     execute arbitrary code. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and Ubuntu 22.04 LTS.
    (CVE-2021-3750)

    It was discovered that the QEMU SCSI device emulation incorrectly handled certain MODE SELECT commands. An     attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of     service. This issue only affected Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. (CVE-2021-3930)

    It was discovered that QEMU did not properly manage memory when it processing repeated messages to cancel     the current SCSI request. A malicious privileged guest attacker could use this issue to cause QEMU to     crash, resulting in a denial of service. (CVE-2022-0216)

    It was discovered that QEMU did not properly manage memory when it using Tulip device emulation. A     malicious guest attacker could use this issue to cause QEMU to crash, resulting in a denial of service.
    This issue only affected Ubuntu 22.10. (CVE-2022-2962)

    It was discovered that QEMU did not properly manage memory when processing ClientCutText messages. A     attacker could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only     affected Ubuntu 22.04 LTS and Ubuntu 22.10. (CVE-2022-3165)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
205306	GLSA-202408-18 : QEMU: Multiple Vulnerabilities	Nessus	Gentoo Local Security Checks	high
205077	CBL Mariner 2.0 Security Update: qemu / qemu-kvm (CVE-2022-2962)	Nessus	MarinerOS Local Security Checks	high
168627	Ubuntu 16.04 ESM / 18.04 LTS / 20.04 LTS / 22.04 LTS : QEMU vulnerabilities (USN-5772-1)	Nessus	Ubuntu Local Security Checks	high

Detections

Analytics

CVE-2022-2962

high

Tenable Plugins

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high

high