CVE-2019-6476 : A defect in code added to support QNAME minimization can cause named to exit wit

A defect in code added to support QNAME minimization can cause named to exit with an assertion failure if a forwarder returns a referral rather than resolving the query. This affects BIND versions 9.14.0 up to 9.14.6, and 9.15.0 up to 9.15.4.

Published 2019-10-17 20:15:13

Updated 2019-10-24 06:15:12

Source Internet Systems Consortium (ISC)

View at NVD, CVE.org

Products affected by CVE-2019-6476

ISC » Bind
Versions from including (>=) 9.14.0 and up to, including, (<=) 9.14.6
cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*
Matching versions
ISC » Bind
Versions from including (>=) 9.15.0 and up to, including, (<=) 9.15.4
cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*
Matching versions

Threat overview for CVE-2019-6476

Top countries where our scanners detected CVE-2019-6476

Top open port discovered on systems with this issue 53

IPs affected by CVE-2019-6476 2,238

Threat actors abusing to this issue? Yes

Find out if you^* are affected by CVE-2019-6476!

^*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-2019-6476

EPSS FAQ

1.35%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 78 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2019-6476

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:N/I:N/A:P	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial
7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	3.9	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High
5.9	MEDIUM	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H	2.2	3.6	Internet Systems Consortium (ISC)
Attack Vector: Network Attack Complexity: High Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High

CWE ids for CVE-2019-6476

CWE-617 Reachable Assertion

The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2019-6476

https://kb.isc.org/docs/cve-2019-6476

CVE-2019-6476: An error in QNAME minimization code can cause BIND to exit with an assertion failure - Security Advisories
Third Party Advisory
https://security.netapp.com/advisory/ntap-20191024-0004/

October 2019 ISC BIND Vulnerabilities in NetApp Products | NetApp Product Security

CVEs referencing this url
https://support.f5.com/csp/article/K42238532?utm_source=f5support&utm_medium=RSS

Article: K42238532 - BIND vulnerabilities CVE-2019-6475 and CVE-2019-6476

CVEs referencing this url