ISC BIND up to 9.9.9-P4/9.10.4-P4/9.11.0-P1 ANY Query Response input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

A vulnerability was found in ISC BIND up to 9.9.9-P4/9.10.4-P4/9.11.0-P1 (Domain Name Software). It has been declared as critical. This vulnerability affects an unknown function of the component ANY Query Response Handler. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect availability. CVE summarizes:

named in ISC BIND 9.x before 9.9.9-P5, 9.10.x before 9.10.4-P5, and 9.11.x before 9.11.0-P2 allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a malformed response to an RTYPE ANY query.

The bug was discovered 01/11/2017. The weakness was published 01/11/2017 as AA-01439 as confirmed security advisory (Website). The advisory is shared for download at kb.isc.org. This vulnerability was named CVE-2016-9131 since 10/31/2016. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The advisory points out:

A malformed query response received by a recursive server in response to a query of RTYPE ANY could trigger an assertion failure while named is attempting to add the RRs in the query response to the cache. While the combination of properties which triggers the assertion should not occur in normal traffic, it is potentially possible for the assertion to be triggered deliberately by an attacker sending a specially-constructed answer having the required properties, after having engineered a scenario whereby an ANY query is sent to the recursive server for the target QNAME. A recursive server will itself only send a query of type ANY if it receives a client query of type ANY for a QNAME for which it has no RRsets at all in cache, otherwise it will respond to the client with the the RRsets that it has available.

The vulnerability scanner Nessus provides a plugin with the ID 96483 (Ubuntu 12.04 LTS / 14.04 LTS / 16.04 LTS / 16.10 : bind9 vulnerabilities (USN-3172-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 185131 (HP-UX Running BIND Remote Denial of Service Vulnerability (HPSBUX03529)). The advisory illustrates:

Successful exploitation of this vulnerability will cause named to encounter an assertion failure and stop executing, resulting in denial of service to clients.

Applying the patch 9.9.9-P5/9.10.4-P5/9.11.0-P2 is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability. The security advisory contains the following remark:

The use of external packet filtering to drop client queries of RTYPE=ANY should prevent exploitation of this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (96483). Similar entries are available at 93249, 95201, 95202 and 129802.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.7

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

Vendor Base Score (ISC): 7.5
Vendor Vector (ISC): 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

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Current Price Estimation: 🔍

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Nessus ID: 96483
Nessus Name: Ubuntu 12.04 LTS / 14.04 LTS / 16.04 LTS / 16.10 : bind9 vulnerabilities (USN-3172-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703758
OpenVAS Name: Debian Security Advisory DSA 3758-1 (bind9 - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Patch: 9.9.9-P5/9.10.4-P5/9.11.0-P2

Timelineinfo

10/31/2016 🔍
01/11/2017 +72 days 🔍
01/11/2017 +0 days 🔍
01/11/2017 +0 days 🔍
01/11/2017 +0 days 🔍
01/12/2017 +1 days 🔍
01/12/2017 +0 days 🔍
01/13/2017 +1 days 🔍
10/28/2022 +2114 days 🔍

Sourcesinfo

Vendor: isc.org

Advisory: AA-01439
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-9131 (🔍)
OVAL: 🔍

SecurityTracker: 1037582
SecurityFocus: 95386 - ISC BIND CVE-2016-9131 Remote Denial of Service Vulnerability
OSVDB: - CVE-2016-9131 - ISC - BIND - Denial of Service Issue

See also: 🔍

Entryinfo

Created: 01/12/2017 11:01
Updated: 10/28/2022 12:26
Changes: 01/12/2017 11:01 (97), 10/28/2022 12:26 (4)
Complete: 🔍

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