VDB-89850 · CVE-2016-2775 · BID 92037

ISC BIND up to 9.9.9-P1/9.10.4-P1/9.11.0b1 Lightweight Resolution named.conf input validation

CVSS Meta Temp Score
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CTI Interest Score
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5.8$0-$5k0.00

A vulnerability, which was classified as critical, was found in ISC BIND up to 9.9.9-P1/9.10.4-P1/9.11.0b1 (Domain Name Software). Affected is an unknown code block of the file named.conf of the component Lightweight Resolution. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as 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. This is going to have an impact on availability.

The weakness was published 07/18/2016 as AA-01393 / HPSBUX03664 as confirmed security advisory (Website). The advisory is available at kb.isc.org. This vulnerability is traded as CVE-2016-2775 since 02/26/2016. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit. The advisory points out:

If the lightweight resolver is asked to resolve a query name which, when combined with a search list entry, exceeds the maximum allowable length, the server can terminate due to an error. A server which is affected by this defect will terminate with a segmentation fault error, resulting in a denial of service to client programs attempting to resolve names.

The vulnerability scanner Nessus provides a plugin with the ID 92798 (Fedora 23 : 12:dhcp / bind99 (2016-2941b3264e)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 350924 (Amazon Linux Security Advisory for bind: AL2012-2016-159).

Upgrading to version 9.9.9-P2 or 9.10.4-P2 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (92798). Further details are available at seclists.org. Similar entry is available at 89853.

Affected

  • Debian GNU/Linux

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 5.9
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.9
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Input validation
CWE: CWE-20
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 92798
Nessus Name: Fedora 23 : 12:dhcp / bind99 (2016-2941b3264e)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 862369
OpenVAS Name: Amazon Linux Local Check: alas-2016-745
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: BIND 9.9.9-P2/9.10.4-P2

Timelineinfo

02/26/2016 🔍
07/18/2016 +143 days 🔍
07/18/2016 +0 days 🔍
07/18/2016 +0 days 🔍
07/19/2016 +1 days 🔍
07/19/2016 +0 days 🔍
07/19/2016 +0 days 🔍
08/09/2016 +21 days 🔍
09/06/2022 +2219 days 🔍

Sourcesinfo

Vendor: isc.org

Advisory: AA-01393 / HPSBUX03664
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-2775 (🔍)
OVAL: 🔍

SecurityTracker: 1036360
SecurityFocus: 92037 - ISC BIND CVE-2016-2775 Remote Denial of Service Vulnerability

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 07/19/2016 19:58
Updated: 09/06/2022 16:58
Changes: 07/19/2016 19:58 (79), 05/23/2019 15:29 (11), 09/06/2022 16:58 (4)
Complete: 🔍

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