Vulnerabilities
Misconfiguration
Runtime Security
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CVE Vulnerabilities

CVE-2023-34723

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

Published: Aug 25, 2023 | Modified: Sep 08, 2023
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 2.x
RedHat/V2
RedHat/V3
Ubuntu
Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2023-34723
CWEhttps://cwe.mitre.org/data/definitions/59.html

An issue was discovered in TechView LA-5570 Wireless Gateway 1.0.19_T53, allows attackers to gain sensitive information via /config/system.conf.

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

Name Vendor Start Version End Version
La5570_firmware Jaycar 1.0.19_t53 (including) 1.0.19_t53 (including)

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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