ISC DHCP up to 4.2.5 Regular Expression libdns memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in ISC DHCP up to 4.2.5. This issue affects some unknown processing in the library libdns of the component Regular Expression. Performing a manipulation results in memory corruption. This vulnerability was named CVE-2013-2494. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in ISC DHCP up to 4.2.5 (Network Management Software). It has been classified as problematic. This affects some unknown processing in the library libdns of the component Regular Expression. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on availability. The summary by CVE is:

libdns in ISC DHCP 4.2.x before 4.2.5-P1 allows remote name servers to cause a denial of service (memory consumption) via vectors involving a regular expression, as demonstrated by a memory-exhaustion attack against a machine running a dhcpd process, a related issue to CVE-2013-2266.

The weakness was presented 03/26/2013 as not defined changelog entry (Website). The advisory is shared at kb.isc.org. The public release was coordinated in cooperation with ISC. This vulnerability is uniquely identified as CVE-2013-2494 since 03/07/2013. The exploitability is told to be difficult. It is possible to initiate the attack remotely. Required for exploitation is a authentication. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 71812 (GLSA-201401-05 : ISC DHCP: Denial of Service), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks.

Upgrading to version 4.2.5-P1 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (83144), Tenable (71812), SecurityFocus (BID 58772†), OSVDB (91803†) and Vulnerability Center (SBV-39258†). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 71812
Nessus Name: GLSA-201401-05 : ISC DHCP: Denial of Service
Nessus File: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: DHCP 4.2.5-P1

Timelineinfo

03/07/2013 🔍
03/26/2013 +19 days 🔍
03/26/2013 +0 days 🔍
03/26/2013 +0 days 🔍
03/26/2013 +0 days 🔍
03/28/2013 +2 days 🔍
04/02/2013 +5 days 🔍
04/21/2013 +19 days 🔍
01/07/2014 +261 days 🔍
04/27/2017 +1206 days 🔍

Sourcesinfo

Vendor: isc.org

Advisory: kb.isc.org
Status: Not defined
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2013-2494 (🔍)
GCVE (CVE): GCVE-0-2013-2494
GCVE (VulDB): GCVE-100-8133
X-Force: 83144
SecurityFocus: 58772 - ISC DHCP 'libdns' CVE-2013-2494 Remote Denial of Service Vulnerability
OSVDB: 91803
Vulnerability Center: 39258 - ISC DHCP Before 4.2.5-P1 libdns Allows Remote DoS Vulnerability, High

Entryinfo

Created: 04/02/2013 16:24
Updated: 04/27/2017 17:11
Changes: 04/02/2013 16:24 (72), 04/27/2017 17:11 (2)
Complete: 🔍
Committer:
Cache ID: 216::103

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