Vulnerabilities
Misconfiguration
Runtime Security
Compliance
CVE Vulnerabilities

CVE-2010-0424

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

Published: Feb 25, 2010 | Modified: Feb 13, 2023
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
3.3 LOW
AV:L/AC:M/Au:N/C:N/I:P/A:P
RedHat/V2
3.6 LOW
AV:L/AC:L/Au:N/C:N/I:P/A:P
RedHat/V3
Ubuntu
LOW
Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2010-0424
CWEhttps://cwe.mitre.org/data/definitions/59.html

The edit_cmd function in crontab.c in (1) cronie before 1.4.4 and (2) Vixie cron (vixie-cron) allows local users to change the modification times of arbitrary files, and consequently cause a denial of service, via a symlink attack on a temporary file in the /tmp directory.

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
Cronie Fedorahosted * 1.4.3 (including)
Vixie_cron Paul_vixie * *
Red Hat Enterprise Linux 5 RedHat vixie-cron-4:4.1-81.el5 *

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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