ISC BIND 9.x Query buffer.c input validation

CVSS Meta Temp Score
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CTI Interest Score
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7.3$0-$5k0.00

Summaryinfo

A vulnerability was found in ISC BIND 9.x. It has been classified as problematic. Affected is an unknown function of the file buffer.c of the component Query Handler. Performing a manipulation results in input validation. This vulnerability was named CVE-2016-2776. The attack may be initiated remotely. In addition, an exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical has been found in ISC BIND 9.x (Domain Name Software). This affects an unknown code block of the file buffer.c of the component Query Handler. 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 presented 09/27/2016 as HPSBUX03664 as confirmed mailinglist post (Bugtraq). It is possible to read the advisory at seclists.org. This vulnerability is uniquely identified as CVE-2016-2776 since 02/26/2016. The exploitability is told to be easy. Attacking locally is a requirement. The requirement for exploitation is a authentication. Technical details and a public exploit are known.

The exploit is shared for download at exploit-db.com. It is declared as highly functional. We expect the 0-day to have been worth approximately $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 94237 (Fedora 23 : bind99 (2016-cbef6c8619)), 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 175848 (Debian Security Update for bind9 (DSA 3680-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 4 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (40453), Tenable (94237), SecurityFocus (BID 93188†) and SecurityTracker (ID 1036903†). Further details are available at seclists.org. See VDB-87306 and VDB-87307 for similar entries. Be aware that VulDB is the high quality source for vulnerability data.

Affected

  • Debian GNU/Linux
  • HP HP-UX
  • Slackware Linux

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Access: Public
Status: Highly functional
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 94237
Nessus Name: Fedora 23 : bind99 (2016-cbef6c8619)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 880401
OpenVAS Name: SuSE Update for bind openSUSE-SU-2016:2406-1 (bind)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

MetaSploit ID: bind_tsig.rb
MetaSploit Name: BIND TKEY Query Denial of Service
MetaSploit File: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Suricata ID: 2023317
Suricata Class: 🔍
Suricata Message: 🔍

Timelineinfo

02/26/2016 🔍
09/27/2016 +214 days 🔍
09/27/2016 +0 days 🔍
09/27/2016 +0 days 🔍
09/28/2016 +1 days 🔍
09/28/2016 +0 days 🔍
10/24/2016 +26 days 🔍
10/25/2016 +1 days 🔍
12/27/2024 +2985 days 🔍

Sourcesinfo

Vendor: isc.org

Advisory: HPSBUX03664
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-2776 (🔍)
GCVE (CVE): GCVE-0-2016-2776
GCVE (VulDB): GCVE-100-92223

OVAL: 🔍

SecurityFocus: 93188 - ISC BIND 'buffer.c' Remote Denial of Service Vulnerability
SecurityTracker: 1036903

scip Labs: https://www.scip.ch/en/?labs.20161013
Misc.: 🔍
See also: 🔍

Entryinfo

Created: 09/28/2016 09:11
Updated: 12/27/2024 10:08
Changes: 09/28/2016 09:11 (83), 05/23/2019 15:44 (15), 09/21/2022 14:37 (4), 12/27/2024 10:08 (14)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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