CVE-2026-101337— Stack overwrite from specially formatted base64 RDATA field
一分钟漏洞结论
影响对象
NLnet Labs NSD
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
When base64 data is split up in pieces, of 3 character or less, tokens were incorrectly calculated to produce 0 bytes. This enables attackers to overwrite the stack with up to 64K of attacker controlled data. Zone files which are written out by NSD itself, suc
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一、 漏洞 CVE-2026-101337 基础信息
漏洞信息
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Vulnerability Title
Stack overwrite from specially formatted base64 RDATA field
来源: CVE Program / CVE List V5
Vulnerability Description
When base64 data is split up in pieces, of 3 character or less, tokens were incorrectly calculated to produce 0 bytes. This enables attackers to overwrite the stack with up to 64K of attacker controlled data. Zone files which are written out by NSD itself, such as for zones for which the NSD instance is secondary, will not be formatted like this. The zone file must be fed to NSD directly, (but it could come, for example, from an operator controlled provisioning system).
来源: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
来源: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
来源: CVE Program / CVE List V5
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| NLnet Labs | NSD | 4.10.0 ~ 4.15.3 | - |
|
二、漏洞 CVE-2026-101337 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-101337 其他参考 (1)
-
https://www.nlnetlabs.nl/downloads/nsd/CVE-2026-101337.txt vendor-advisory
同批安全公告 · NLnet Labs · 2026-10-14 · 共 4 条
| CVE-2026-101341 | 8.7 HIGH | Stack overwrite from specially formatted TXT-DATA RDATA field |
| CVE-2026-101338 | 8.7 HIGH | Stack overwrite from a specially crafted and formatted SVCB or HTTPS RR |
| CVE-2026-101339 | 8.7 HIGH | Stack overwrite from a specially crafted and formatted HIP RR |
IV. Related Vulnerabilities
Same product: NSD
-
CVE-2026-101341
Stack overwrite from specially formatted TXT-DATA RDATA fiel -
CVE-2026-101339
Stack overwrite from a specially crafted and formatted HIP R -
CVE-2026-101338
Stack overwrite from a specially crafted and formatted SVCB -
CVE-2026-19538
NLnet Labs NSD 授权问题漏洞 -
CVE-2026-19401
NLnet Labs NSD 异常处理不当漏洞
Same vendor: NLnet Labs
Same weakness: CWE-121
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CVE-2026-76655
HPE NonStop SNMP Trap Multiplexer - Buffer Overflow vulnerab -
CVE-2026-101341
Stack overwrite from specially formatted TXT-DATA RDATA fiel -
CVE-2026-101339
Stack overwrite from a specially crafted and formatted HIP R -
CVE-2026-101338
Stack overwrite from a specially crafted and formatted SVCB -
CVE-2026-73795
HPE NonStop TMF Auditread2 - Denial of Service vulnerability
V. Comments for CVE-2026-101337
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