CVE-2023-5517— Querying RFC 1918 reverse zones may cause an assertion failure when "nxdomain-redirect" is enabled
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I. Basic Information for CVE-2023-5517
Vulnerability Information
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Vulnerability Title
Querying RFC 1918 reverse zones may cause an assertion failure when "nxdomain-redirect" is enabled
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
ISC BIND 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ISC BIND是美国ISC公司的一套实现了DNS协议的开源软件。 ISC BIND 存在安全漏洞，该漏洞源于查询处理代码存在问题，可能会导致出现断言失败。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2023-5517
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Same Patch Batch · ISC · 2024-02-13 · 5 CVEs total
| CVE-2023-4408 | 7.5 HIGH | Parsing large DNS messages may cause excessive CPU load |
| CVE-2023-5679 | 7.5 HIGH | Enabling both DNS64 and serve-stale may cause an assertion failure during recursive resolu |
| CVE-2023-6516 | 7.5 HIGH | Specific recursive query patterns may lead to an out-of-memory condition |
| CVE-2023-5680 | 5.3 MEDIUM | Cleaning an ECS-enabled cache may cause excessive CPU load |
IV. Related Vulnerabilities
Same product: BIND 9
- CVE-2026-3591
A stack use-after-return flaw in SIG(0) handling code may en - CVE-2026-3119
Authenticated query containing a TKEY record may cause named - CVE-2026-3104
Memory leak in code preparing DNSSEC proofs of non-existence - CVE-2026-1519
Excessive NSEC3 iterations cause high CPU load during insecu - CVE-2025-13878
Malformed BRID/HHIT records can cause named to terminate une
Same vendor: ISC
- CVE-2026-3591
A stack use-after-return flaw in SIG(0) handling code may en - CVE-2026-3119
Authenticated query containing a TKEY record may cause named - CVE-2026-3104
Memory leak in code preparing DNSSEC proofs of non-existence - CVE-2026-1519
Excessive NSEC3 iterations cause high CPU load during insecu - CVE-2026-3608
Stack overflow in Kea daemons
V. Comments for CVE-2023-5517
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