UBUNTU-CVE-2020-28374

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    UBUNTU-CVE-2020-28374

    Published: 12 Jan 2021Last Modified: 9 Sept 2026
    Upstream:
    CVE-2020-28374
    Aliases:
    USN-4694-1
    USN-4709-1
    USN-4711-1

    Summary:

    Details: In drivers/target/target_core_xcopy.c in the Linux kernel before 5.10.7, insufficient identifier checking in the LIO SCSI target code can be used by remote attackers to read or write files via directory traversal in an XCOPY request, aka CID-2896c93811e3. For example, an attack can occur over a network if the attacker has access to one iSCSI LUN. The attacker gains control over file access because I/O operations are proxied via an attacker-selected backstore.

    References: https://ubuntu.com/security/CVE-2020-28374, https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2896c93811e39d63a4d9b63ccf12a8fbc226e5e4, https://github.com/open-iscsi/tcmu-runner/pull/644, https://ubuntu.com/security/notices/USN-4694-1, https://ubuntu.com/security/notices/USN-4713-1, https://ubuntu.com/security/notices/USN-4711-1, https://ubuntu.com/security/notices/USN-4709-1, https://ubuntu.com/security/notices/USN-4713-2, https://ubuntu.com/security/notices/USN-4753-1, https://ubuntu.com/security/notices/USN-4901-1, https://www.cve.org/CVERecord?id=CVE-2020-28374

    Affected packages

    Package

    Name: linux

    Purl: pkg:deb/ubuntu/linux?arch=source&distro=trusty%2Fesm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.13.0-184.235

    Affected versions

    3.11.0-12.19

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    UBUNTU-CVE-2020-28374 | CVE-DB