CVE-2023-5517
Severity
7.5HIGH
EPSS
0.1%
top 65.39%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedFeb 13
Latest updateFeb 19
Description
A flaw in query-handling code can cause `named` to exit prematurely with an assertion failure when:
- `nxdomain-redirect ;` 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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6
Affected Packages4 packages
Also affects: Fedora 38, 39
🔴Vulnerability Details
4CVEList▶
Querying RFC 1918 reverse zones may cause an assertion failure when "nxdomain-redirect" is enabled↗2024-02-13
OSV▶
CVE-2023-5517: A flaw in query-handling code can cause `named` to exit prematurely with an assertion failure when:
- `nxdomain-redirect ;` is configured, and
- the↗2024-02-13
GHSA▶
GHSA-xcvq-77qq-2wpx: A flaw in query-handling code can cause `named` to exit prematurely with an assertion failure when:
- `nxdomain-redirect ;` is configured, and
- the↗2024-02-13
OSV▶
CVE-2023-5517: A flaw in query-handling code can cause `named` to exit prematurely with an assertion failure when: - `nxdomain-redirect ;` is configured, and - the r↗2024-02-13
📋Vendor Advisories
5Red Hat▶
bind9: Querying RFC 1918 reverse zones may cause an assertion failure when “nxdomain-redirect” is enabled↗2024-02-13
Microsoft▶
Querying RFC 1918 reverse zones may cause an assertion failure when "nxdomain-redirect" is enabled↗2024-02-13
Debian▶
CVE-2023-5517: bind9 - A flaw in query-handling code can cause `named` to exit prematurely with an asse...↗2023