ISC BIND 9.10.0 Delegation resource management

CVSS Meta Temp Score
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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in ISC BIND 9.10.0. This affects an unknown part of the component Delegation Handler. Executing a manipulation can lead to resource management. This vulnerability is handled as CVE-2014-8500. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in ISC BIND 9.10.0 (Domain Name Software). This vulnerability affects an unknown functionality of the component Delegation Handler. The manipulation with an unknown input leads to a resource management vulnerability. The CWE definition for the vulnerability is CWE-399. As an impact it is known to affect availability. CVE summarizes:

ISC BIND 9.0.x through 9.8.x, 9.9.0 through 9.9.6, and 9.10.0 through 9.10.1 does not limit delegation chaining, which allows remote attackers to cause a denial of service (memory consumption and named crash) via a large or infinite number of referrals.
The advisory summarizes:
All recursive resolvers are affected. Authoritative servers can be affected if an attacker can control a delegation traversed by the authoritative server in servicing the zone.

The weakness was released 12/08/2014 by Florian Maury with ANSSI as A Defect in Delegation Handling Can Be Exploited to Crash BIND as confirmed advisory (Website). The advisory is shared for download at kb.isc.org. This vulnerability was named CVE-2014-8500 since 10/28/2014. The exploitation appears to be easy. 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:

By making use of maliciously-constructed zones or a rogue server, an attacker can exploit an oversight in the code BIND 9 uses to follow delegations in the Domain Name Service, causing BIND to issue unlimited queries in an attempt to follow the delegation. This can lead to resource exhaustion and denial of service (up to and including termination of the named server process.)

The vulnerability scanner Nessus provides a plugin with the ID 79808 (Debian DSA-3094-1 : bind9 - security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 185096 (HP-UX Running BIND Remote Denial of Service Vulnerability (HPSBUX03235)).

Upgrading to version 9.9.6-P1 or 9.10.1-P1 eliminates this vulnerability. The upgrade is hosted for download at isc.org. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:

BIND 9.6-ESV and BIND 9.8 have been officially designated "end of life" (EOL) and no longer receive support. All organizations running EOL branches should be planning transition to currently supported branches. However, due to the severity of this particular issue, source code diffs which can be applied to BIND 9.8 and BIND 9.6-ESV will be made available on request to [email protected].

The vulnerability is also documented in the databases at X-Force (99187), Tenable (79808), SecurityFocus (BID 71590†), Secunia (SA62122†) and SecurityTracker (ID 1031311†). Additional details are provided at kb.isc.org. Entry connected to this vulnerability is available at VDB-68355. Once again VulDB remains the best 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: 7.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 7.5
VulDB Temp Score: 6.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 79808
Nessus Name: Debian DSA-3094-1 : bind9 - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 703094
OpenVAS Name: Debian Security Advisory DSA 3094-1 (bind9 - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: BIND 9.9.6-P1/9.10.1-P1
McAfee IPS: 🔍
McAfee IPS Version: 🔍

ISS Proventia IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

10/28/2014 🔍
12/08/2014 +41 days 🔍
12/08/2014 +0 days 🔍
12/08/2014 +0 days 🔍
12/09/2014 +1 days 🔍
12/09/2014 +0 days 🔍
12/09/2014 +0 days 🔍
12/10/2014 +1 days 🔍
12/10/2014 +0 days 🔍
01/06/2015 +27 days 🔍
09/17/2015 +254 days 🔍
11/12/2024 +3344 days 🔍

Sourcesinfo

Vendor: isc.org

Advisory: A Defect in Delegation Handling Can Be Exploited to Crash BIND
Researcher: Florian Maury
Organization: ANSSI
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-8500 (🔍)
GCVE (CVE): GCVE-0-2014-8500
GCVE (VulDB): GCVE-100-68356

OVAL: 🔍

CERT: 🔍
X-Force: 99187 - ISC BIND delegation denial of service, High Risk
SecurityFocus: 71590 - ISC BIND CVE-2014-8500 Remote Denial of Service Vulnerability
Secunia: 62122 - SUSE update for bind, Moderately Critical
SecurityTracker: 1031311
Vulnerability Center: 52626 - ISC BIND 9.10.0 Remote DoS Vulnerability via Unlimited Queries, High

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 12/09/2014 09:14
Updated: 11/12/2024 03:31
Changes: 12/09/2014 09:14 (86), 12/23/2017 13:13 (15), 02/27/2022 16:57 (3), 11/12/2024 03:31 (15)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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