Nlnet Labs nsd 4.2.0 nsd-checkzone dname.c dname_concatenate memory corruption

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CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.5$0-$5k0.00

A vulnerability was found in Nlnet Labs nsd 4.2.0 (Domain Name Software). It has been classified as critical. This affects the function dname_concatenate of the file dname.c of the component nsd-checkzone. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

nsd-checkzone in NLnet Labs NSD 4.2.0 has a Stack-based Buffer Overflow in the dname_concatenate() function in dname.c.

The weakness was released 07/03/2019 (Website). The advisory is shared at lists.fedoraproject.org. This vulnerability is uniquely identified as CVE-2019-13207 since 07/03/2019. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/30/2020).

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

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VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.5

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

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VulDB Base Score: 🔍
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VulDB Reliability: 🔍

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Exploitinginfoedit

Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfoedit

Threat: 🔍
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Countermeasuresinfoedit

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfoedit

07/03/2019 🔍
07/03/2019 +0 days 🔍
07/04/2019 +1 days 🔍
06/30/2020 +362 days 🔍

Sourcesinfoedit

Advisory: lists.fedoraproject.org
Status: Not defined

CVE: CVE-2019-13207 (🔍)

Entryinfoedit

Created: 07/04/2019 11:16 AM
Updated: 06/30/2020 08:32 PM
Changes: (1) advisory_url
Complete: 🔍

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