ISC BIND 9.12.0/9.12.1 Slave Zone Transfer rbtdb.c assertion

CVSS Meta Temp Score
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CTI Interest Score
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4.9$0-$5k0.00

Summaryinfo

A vulnerability was found in ISC BIND 9.12.0/9.12.1. It has been rated as critical. This affects an unknown part of the file rbtdb.c of the component Slave Zone Transfer Handler. Performing a manipulation results in assertion. This vulnerability is cataloged as CVE-2018-5736. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability classified as critical has been found in ISC BIND 9.12.0/9.12.1 (Domain Name Software). This affects an unknown function of the file rbtdb.c of the component Slave Zone Transfer Handler. The manipulation with an unknown input leads to a assertion vulnerability. CWE is classifying the issue as CWE-617. The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary. This is going to have an impact on availability.

The bug was discovered 05/18/2018. The weakness was shared 05/18/2018 as AA-01602 as confirmed security advisory (Website). It is possible to read the advisory at kb.isc.org. The vendor cooperated in the coordination of the public release. This vulnerability is uniquely identified as CVE-2018-5736 since 01/17/2018. It is possible to initiate the attack remotely. The successful exploitation requires a authentication. Technical details of the vulnerability are known, but there is no available exploit. The advisory points out:

An error in zone database reference counting can lead to an assertion failure if a server which is running an affected version of BIND attempts several transfers of a slave zone in quick succession.

The vulnerability scanner Nessus provides a plugin with the ID 109929 (FreeBSD : BIND -- multiple vulnerabilities (94599fe0-5ca3-11e8-8be1-d05099c0ae8c)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 15101 (ISC BIND Multiple Vulnerabilities (AA-01606,AA-01602)). The advisory illustrates:

This defect could be deliberately exercised by an attacker who is permitted to cause a vulnerable server to initiate zone transfers (for example: by sending valid NOTIFY messages), causing the named process to exit after failing the assertion test.

Applying the patch 9.12.1-P1 is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (109929), SecurityFocus (BID 104386†) and SecurityTracker (ID 1040941†). The entry VDB-118000 is related to this item. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.0
VulDB Meta Temp Score: 4.9

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

Vendor Base Score (ISC): 5.3
Vendor Vector (ISC): 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Assertion
CWE: CWE-617
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: 109929
Nessus Name: FreeBSD : BIND -- multiple vulnerabilities (94599fe0-5ca3-11e8-8be1-d05099c0ae8c)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 64969
OpenVAS Name: ISC BIND Multiple Denial of Service Vulnerabilities-May18
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: 9.12.1-P1

Timelineinfo

01/17/2018 🔍
05/18/2018 +121 days 🔍
05/18/2018 +0 days 🔍
05/18/2018 +0 days 🔍
05/18/2018 +0 days 🔍
05/18/2018 +0 days 🔍
05/19/2018 +1 days 🔍
05/21/2018 +2 days 🔍
01/16/2019 +240 days 🔍
03/14/2023 +1518 days 🔍

Sourcesinfo

Vendor: isc.org

Advisory: AA-01602
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2018-5736 (🔍)
GCVE (CVE): GCVE-0-2018-5736
GCVE (VulDB): GCVE-100-117999
SecurityFocus: 104386 - ISC BIND CVE-2018-5736 Remote Denial of Service Vulnerability
SecurityTracker: 1040941

See also: 🔍

Entryinfo

Created: 05/19/2018 10:02
Updated: 03/14/2023 12:08
Changes: 05/19/2018 10:02 (94), 02/07/2020 13:47 (5), 03/14/2023 12:08 (4)
Complete: 🔍
Cache ID: 216::103

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