CVE-2018-5737 : A problem with the implementation of the new serve-stale feature in BIND 9.12 can lead to an assertion failure in rbtdb.

A problem with the implementation of the new serve-stale feature in BIND 9.12 can lead to an assertion failure in rbtdb.c, even when stale-answer-enable is off. Additionally, problematic interaction between the serve-stale feature and NSEC aggressive negative caching can in some cases cause undesirable behavior from named, such as a recursion loop or excessive logging. Deliberate exploitation of this condition could cause operational problems depending on the particular manifestation -- either degradation or denial of service. Affects BIND 9.12.0 and 9.12.1.

Published 2019-01-16 20:29:01

Updated 2019-10-09 23:41:33

Source Internet Systems Consortium (ISC)

View at NVD, CVE.org

Vulnerability category: Denial of service

Threat overview for CVE-2018-5737

Top countries where our scanners detected CVE-2018-5737

Top open port discovered on systems with this issue 53

IPs affected by CVE-2018-5737 155

Threat actors abusing to this issue? Yes

Find out if you^* are affected by CVE-2018-5737!

^*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-2018-5737

Probability of exploitation activity in the next 30 days: 0.95%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 83 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2018-5737

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:3.0/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:3.0/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-2018-5737

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-2018-5737

http://www.securitytracker.com/id/1040942

BIND Flaw in serve-stale Function Lets Remote Users Deny Service - SecurityTracker
Third Party Advisory;VDB Entry
https://security.netapp.com/advisory/ntap-20180926-0004/

May 2018 ISC BIND Vulnerabilities in NetApp Products | NetApp Product Security
Third Party Advisory

CVEs referencing this url
http://www.securityfocus.com/bid/104236

ISC BIND CVE-2018-5737 Remote Denial of Service Vulnerability
Third Party Advisory;VDB Entry
https://kb.isc.org/docs/aa-01606

CVE-2018-5737: BIND 9.12's serve-stale implementation can cause an assertion failure in rbtdb.c or other undesirable behavior, even if serve-stale is not enabled - Security Advisories
Vendor Advisory

Products affected by CVE-2018-5737