buffer.c in named in ISC BIND 9 before 9.9.9-P3, 9.10.x before 9.10.4-P3, and 9.11.x before 9.11.0rc3 does not properly construct responses, which allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a crafted query.
Published 2016-09-28 10:59:00
Updated 2019-12-27 16:08:56
Source MITRE
View at NVD,   CVE.org
Vulnerability category: Input validationDenial of service

Threat overview for CVE-2016-2776

Top countries where our scanners detected CVE-2016-2776
Top open port discovered on systems with this issue 53
IPs affected by CVE-2016-2776 66,633
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2016-2776!
*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2016-2776

Probability of exploitation activity in the next 30 days: 97.29%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 100 % EPSS Score History EPSS FAQ

Metasploit modules for CVE-2016-2776

  • BIND TSIG Query Denial of Service
    Disclosure Date: 2016-09-27
    First seen: 2020-04-26
    auxiliary/dos/dns/bind_tsig
    A defect in the rendering of messages into packets can cause named to exit with an assertion failure in buffer.c while constructing a response to a query that meets certain criteria. This assertion can be triggered even if the apparent source address isn't a

CVSS scores for CVE-2016-2776

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source
7.8
HIGH AV:N/AC:L/Au:N/C:N/I:N/A:C
10.0
6.9
NIST
7.5
HIGH CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.9
3.6
NIST

CWE ids for CVE-2016-2776

  • 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.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2016-2776

Products affected by CVE-2016-2776

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