BIND9 Crash: assertion failure via nxdomain-redirect (v9.129.19)
CVE-2023-5517 Published on February 13, 2024

Querying RFC 1918 reverse zones may cause an assertion failure when "nxdomain-redirect" is enabled
A flaw in query-handling code can cause `named` to exit prematurely with an assertion failure when: - `nxdomain-redirect <domain>;` is configured, and - the resolver receives a PTR query for an RFC 1918 address that would normally result in an authoritative NXDOMAIN response. This issue affects BIND 9 versions 9.12.0 through 9.16.45, 9.18.0 through 9.18.21, 9.19.0 through 9.19.19, 9.16.8-S1 through 9.16.45-S1, and 9.18.11-S1 through 9.18.21-S1.

Vendor Advisory NVD

Vulnerability Analysis

CVE-2023-5517 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
NONE
Integrity Impact:
NONE
Availability Impact:
HIGH

Weakness Type

What is an assertion failure Vulnerability?

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.

CVE-2023-5517 has been classified to as an assertion failure vulnerability or weakness.


Products Associated with CVE-2023-5517

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2023-5517 are published in these products:

Canonical Ubuntu Linux
 
NetApp Active Iq Unified Manager
 
Fedora Project Fedora
 
ISC BIND
 

Affected Versions

ISC BIND 9: isc bind_9:

Exploit Probability

EPSS
0.14%
Percentile
34.65%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.