EUVD-2026-17401
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Lifecycle Timeline
4Description
An attacker might be able to trigger an out-of-bounds read by sending a crafted DNS response packet, when custom Lua code uses newDNSPacketOverlay to parse DNS packets. The out-of-bounds read might trigger a crash, leading to a denial of service, or access unrelated memory, leading to potential information disclosure.
Analysis
Out-of-bounds read in PowerDNS dnsdist allows unauthenticated remote attackers to trigger denial of service or potential information disclosure by sending a crafted DNS response packet when custom Lua code uses the newDNSPacketOverlay function to parse packets. CVSS 5.3 indicates moderate severity with network-accessible attack surface and no privilege or user interaction required.
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Priority Score
Vendor Status
Debian
| Release | Status | Fixed Version | Urgency |
|---|---|---|---|
| bullseye | fixed | (unfixed) | end-of-life |
| bookworm | fixed | (unfixed) | end-of-life |
| trixie | vulnerable | 1.9.10-1+deb13u1 | - |
| forky | vulnerable | 2.0.2-1 | - |
| sid | fixed | 2.0.3-1 | - |
| (unstable) | fixed | 2.0.3-1 | - |
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External POC / Exploit Code
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