ISC BIND up to 9.15.0 dispatch.c Malformed Packet race condition

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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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5.9$0-$5k0.00

A vulnerability was found in ISC BIND up to 9.15.0 (Domain Name Software). It has been classified as problematic. This affects an unknown code block of the file dispatch.c. The manipulation as part of a Malformed Packet leads to a race condition vulnerability. CWE is classifying the issue as CWE-362. This is going to have an impact on availability. The summary by CVE is:

A race condition which may occur when discarding malformed packets can result in BIND exiting due to a REQUIRE assertion failure in dispatch.c. Versions affected: BIND 9.11.0 -> 9.11.7, 9.12.0 -> 9.12.4-P1, 9.14.0 -> 9.14.2. Also all releases of the BIND 9.13 development branch and version 9.15.0 of the BIND 9.15 development branch and BIND Supported Preview Edition versions 9.11.3-S1 -> 9.11.7-S1.

The weakness was published 10/09/2019 (Website). It is possible to read the advisory at kb.isc.org. This vulnerability is uniquely identified as CVE-2019-6471 since 01/16/2019. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/30/2020).

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

Similar entries are available at 143294, 143293, 143292 and 143291.

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VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.9

VulDB Base Score: 5.9
VulDB Temp Score: 5.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.9
NVD Vector: 🔍

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VulDB Base Score: 🔍
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Exploitinginfoedit

Class: Race condition
CWE: CWE-362
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔍

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Countermeasuresinfoedit

Recommended: no mitigation known
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0-Day Time: 🔍

Timelineinfoedit

01/16/2019 🔍
10/09/2019 +266 days 🔍
10/10/2019 +1 days 🔍
09/30/2020 +356 days 🔍

Sourcesinfoedit

Vendor: https://www.isc.org/

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

CVE: CVE-2019-6471 (🔍)
See also: 🔍

Entryinfoedit

Created: 10/10/2019 11:02 AM
Updated: 09/30/2020 07:00 AM
Changes: (1) advisory_confirm_url
Complete: 🔍

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