Directory Traversal Affecting linux-4.19 package, versions <4.19.171-2~deb9u1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.56% (79th percentile)

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  • Snyk IDSNYK-DEBIAN9-LINUX419-1073737
  • published13 Jan 2021
  • disclosed13 Jan 2021

Introduced: 13 Jan 2021

CVE-2020-28374  (opens in a new tab)
CWE-22  (opens in a new tab)

How to fix?

Upgrade Debian:9 linux-4.19 to version 4.19.171-2~deb9u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream linux-4.19 package and not the linux-4.19 package as distributed by Debian. See How to fix? for Debian:9 relevant fixed versions and status.

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

CVSS Base Scores

version 3.1