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CVE-2020-28374

Status Candidate

Overview

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.

Related Files

Ubuntu Security Notice USN-4753-1
Posted Feb 25, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4753-1 - It was discovered that the LIO SCSI target implementation in the Linux kernel performed insufficient identifier checking in certain XCOPY requests. An attacker with access to at least one LUN in a multiple backstore environment could use this to expose sensitive information or modify data.

tags | advisory, kernel
systems | linux, ubuntu
advisories | CVE-2020-28374
MD5 | 3137bd80ba971c0edbe8ff58fc754a23
Ubuntu Security Notice USN-4713-2
Posted Feb 10, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4713-2 - It was discovered that the LIO SCSI target implementation in the Linux kernel performed insufficient identifier checking in certain XCOPY requests. An attacker with access to at least one LUN in a multiple backstore environment could use this to expose sensitive information or modify data.

tags | advisory, kernel
systems | linux, ubuntu
advisories | CVE-2020-28374
MD5 | bdc9412645c3c7bcad2191d791d8de6c
Kernel Live Patch Security Notice LSN-0074-1
Posted Feb 1, 2021
Authored by Benjamin M. Romer

Elena Petrova discovered that the pin controller device tree implementation in the Linux kernel did not properly handle string references. A local attacker could use this to expose sensitive information (kernel memory). Andy Nguyen discovered that the Bluetooth A2MP implementation in the Linux kernel did not properly initialize memory in some situations. A physically proximate remote attacker could use this to expose sensitive information (kernel memory). Various other issues were also addressed.

tags | advisory, remote, kernel, local
systems | linux
advisories | CVE-2020-0427, CVE-2020-12352, CVE-2020-25645, CVE-2020-28374
MD5 | 6330d3eeacc7aa6e678f919eefeb140b
Ubuntu Security Notice USN-4713-1
Posted Jan 28, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4713-1 - It was discovered that the LIO SCSI target implementation in the Linux kernel performed insufficient identifier checking in certain XCOPY requests. An attacker with access to at least one LUN in a multiple backstore environment could use this to expose sensitive information or modify data.

tags | advisory, kernel
systems | linux, ubuntu
advisories | CVE-2020-28374
MD5 | 93b60be65f3b9617bbda04c469a600da
Ubuntu Security Notice USN-4711-1
Posted Jan 28, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4711-1 - It was discovered that the LIO SCSI target implementation in the Linux kernel performed insufficient identifier checking in certain XCOPY requests. An attacker with access to at least one LUN in a multiple backstore environment could use this to expose sensitive information or modify data. Kiyin discovered that the perf subsystem in the Linux kernel did not properly deallocate memory in some situations. A privileged attacker could use this to cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, kernel
systems | linux, ubuntu
advisories | CVE-2020-25704, CVE-2020-28374
MD5 | 862338ce60446f35a002c294d4ef7d48
Ubuntu Security Notice USN-4709-1
Posted Jan 28, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4709-1 - It was discovered that the LIO SCSI target implementation in the Linux kernel performed insufficient identifier checking in certain XCOPY requests. An attacker with access to at least one LUN in a multiple backstore environment could use this to expose sensitive information or modify data. Wen Xu discovered that the XFS filesystem implementation in the Linux kernel did not properly track inode validations. An attacker could use this to construct a malicious XFS image that, when mounted, could cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, kernel
systems | linux, ubuntu
advisories | CVE-2018-13093, CVE-2019-19816, CVE-2020-25669, CVE-2020-28374
MD5 | 5205f153d121a7f1d0f2c2402956e1d3
Ubuntu Security Notice USN-4694-1
Posted Jan 15, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4694-1 - It was discovered that the LIO SCSI target implementation in the Linux kernel performed insufficient identifier checking in certain XCOPY requests. An attacker with access to at least one LUN in a multiple backstore environment could use this to expose sensitive information or modify data.

tags | advisory, kernel
systems | linux, ubuntu
advisories | CVE-2020-28374
MD5 | 39bd5d296c952869b692a804fbc44d89
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