Vulnerability Monitor

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CVE-2009-1893

The configtest function in the Red Hat dhcpd init script for DHCP 3.0.1 in Red Hat Enterprise Linux (RHEL) 3 allows local users to overwrite arbitrary files via a symlink attack on an unspecified temporary file, related to the "dhcpd -t" command.

Security Impact Summary

CVE-2009-1893 is a security vulnerability that . Impacting 2 products from redhat, from isc organizations running these solutions should prioritize assessment and patching.

Historical Context

Originally identified in 2009, this vulnerability predates many modern security frameworks and practices. The vulnerability landscape of that era was characterized by different threat models and less mature defense mechanisms compared to contemporary standards.

Published

2009-07-17T16:30:00.890

Last Modified

2025-04-09T00:30:58.490

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 6.9 (MEDIUM)

CVSSv2 Vector

AV:L/AC:M/Au:N/C:C/I:C/A:C

Access Vector: LOCAL
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: COMPLETE
Integrity Impact: COMPLETE
Availability Impact: COMPLETE

Exploitability Score

3.4

Impact Score

10.0

Weaknesses

Type: Primary
CWE-59

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	redhat	enterprise_linux	3.0	Yes
Operating System	redhat	enterprise_linux	3.0	Yes
Operating System	redhat	enterprise_linux	3.0	Yes
Operating System	redhat	enterprise_linux	3.0	Yes
Application	isc	dhcp	3.0.1	Yes
Application	isc	dhcp	3.0.1	Yes
Application	isc	dhcp	3.0.1	Yes
Application	isc	dhcp	3.0.1	Yes
Application	isc	dhcp	3.0.1	Yes
Application	isc	dhcp	3.0.1	Yes
Application	isc	dhcp	3.0.1	Yes
Application	isc	dhcp	3.0.1	Yes
Application	isc	dhcp	3.0.1	Yes
Application	isc	dhcp	3.0.1	Yes
Application	isc	dhcp	3.0.1	Yes
Application	isc	dhcp	3.0.1	Yes

References

http://secunia.com/advisories/35831 Vendor Advisory ([email protected])
http://securitytracker.com/id?1022554 ([email protected])
http://www.redhat.com/support/errata/RHSA-2009-1154.html Vendor Advisory ([email protected])
http://www.securityfocus.com/bid/35670 ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=510024 ([email protected])
https://exchange.xforce.ibmcloud.com/vulnerabilities/51718 ([email protected])
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11597 ([email protected])
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6440 ([email protected])
http://secunia.com/advisories/35831 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://securitytracker.com/id?1022554 (af854a3a-2127-422b-91ae-364da2661108)
http://www.redhat.com/support/errata/RHSA-2009-1154.html Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/35670 (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=510024 (af854a3a-2127-422b-91ae-364da2661108)
https://exchange.xforce.ibmcloud.com/vulnerabilities/51718 (af854a3a-2127-422b-91ae-364da2661108)
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11597 (af854a3a-2127-422b-91ae-364da2661108)
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6440 (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For redhat's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.