ISC dhcp 3.0.1 configtest link following

CVSS Meta Temp Score
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CTI Interest Score
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8.4$5k-$25k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in ISC dhcp 3.0.1. The affected element is the function configtest. Executing a manipulation can lead to link following. This vulnerability is handled as CVE-2009-1893. There is not any exploit available.

Detailsinfo

A vulnerability was found in ISC dhcp 3.0.1 (Network Management Software). It has been declared as critical. This vulnerability affects the function configtest. The manipulation with an unknown input leads to a link following vulnerability. The CWE definition for the vulnerability is CWE-59. 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. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was released 07/17/2009 by Tomas Hoger as Bug 510024 as confirmed bug report (Bugzilla). The advisory is available at bugzilla.redhat.com. This vulnerability was named CVE-2009-1893 since 06/02/2009. Local access is required to approach this attack. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 08/12/2021).

The vulnerability scanner Nessus provides a plugin with the ID 39801 (CentOS 3 : dhcp (CESA-2009:1154)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 155842 (Oracle Enterprise Linux Update for DHCP (ELSA-2009-1154)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at X-Force (51718), Tenable (39801), SecurityFocus (BID 35670†), Secunia (SA35831†) and SecurityTracker (ID 1022554†). Entry connected to this vulnerability is available at VDB-49065. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.4
VulDB Meta Temp Score: 8.4

VulDB Base Score: 8.4
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Link following
CWE: CWE-59
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 39801
Nessus Name: CentOS 3 : dhcp (CESA-2009:1154)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 880710
OpenVAS Name: CentOS Update for dhclient CESA-2009:1154 centos3 i386
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/02/2009 🔍
07/14/2009 +42 days 🔍
07/14/2009 +0 days 🔍
07/14/2009 +0 days 🔍
07/15/2009 +1 days 🔍
07/17/2009 +2 days 🔍
07/17/2009 +0 days 🔍
07/19/2009 +2 days 🔍
03/17/2015 +2067 days 🔍
08/12/2021 +2340 days 🔍

Sourcesinfo

Vendor: isc.org

Advisory: Bug 510024
Researcher: Tomas Hoger
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2009-1893 (🔍)
GCVE (CVE): GCVE-0-2009-1893
GCVE (VulDB): GCVE-100-49066

OVAL: 🔍
IAVM: 🔍

X-Force: 51718
SecurityFocus: 35670 - ISC DHCP 'dhcpd -t' Command Insecure Temporary File Creation Vulnerability
Secunia: 35831 - Red Hat update for dhcp, Moderately Critical
SecurityTracker: 1022554 - Red Hat dhcpd init Script Symlink Flaw Lets Local Users Gain Elevated Privileges
Vulnerability Center: 22909 - ISC DHCP on Red Hat Enterprise Linux Local Arbitrary File Overwrite Vulnerability, Low

See also: 🔍

Entryinfo

Created: 03/17/2015 23:38
Updated: 08/12/2021 15:32
Changes: 03/17/2015 23:38 (69), 02/11/2017 16:47 (17), 08/12/2021 15:32 (3)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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