Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2022-22995

Improper Link Resolution Before File Access ('Link Following')

Published: Mar 25, 2022 | Modified: Nov 03, 2025
CVSS 3.x
9.8
CRITICAL
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
7.5 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P
RedHat/V2
RedHat/V3
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2022-22995
CWEhttps://cwe.mitre.org/data/definitions/59.html

The combination of primitives offered by SMB and AFP in their default configuration allows the arbitrary writing of files. By exploiting these combination of primitives, an attacker can execute arbitrary code.

Weakness

The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

Affected Software

NameVendorStart VersionEnd Version
My_cloud_pr2100_firmwareWesterndigital*5.19.117 (excluding)
NetatalkUbuntubionic*
NetatalkUbuntuesm-apps/focal*
NetatalkUbuntuesm-apps/jammy*
NetatalkUbuntufocal*
NetatalkUbuntujammy*
NetatalkUbuntulunar*
NetatalkUbuntumantic*
NetatalkUbuntutrusty*
NetatalkUbuntuupstream*
NetatalkUbuntuxenial*

Potential Mitigations

  • Follow the principle of least privilege when assigning access rights to entities in a software system.
  • Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.

References

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