CVE-2020-28374

Advisory lineage Upstream: 0 Downstream: 53
Modified
Published: 13 Jan 2021, 03:07
Last modified:04 Aug 2024, 16:33

Vulnerability Summary

Overall Risk (default)
medium
32/100
CVSS Score
8.1 HIGH
v3.1 (nvd)
EPSS Score
0.3% LOW
0% probability +0.03%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

13 Jan 2021, 03:07
Published
Vulnerability first disclosed
04 Aug 2024, 16:33
Last Modified
Vulnerability information updated

Description

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.

CVSS Metrics

  • v3.1•HIGH•Score: 8.1CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
  • v2.0•MEDIUM•Score: 5.5AV:N/AC:L/Au:S/C:P/I:P/A:N

EPSS Trends

Current EPSS score: 0.30%• Percentile: 54%

Techniques & Countermeasures

  • CWE-22•Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

    The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

Affected Systems

  • debian•debian_linux

    9.0 | 10.0

  • fedoraproject•fedora

    32 | 33

  • linux•linux_kernel

    < 5.10.7

References (15)