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Stack consumption in trust-dns-server

High severity GitHub Reviewed Published Aug 25, 2021 to the GitHub Advisory Database • Updated Dec 8, 2023

Package

cargo trust-dns-server (Rust)

Affected versions

>= 0.16.0, < 0.18.1

Patched versions

0.18.1

Description

There's a stack overflow leading to a crash and potential DOS when processing additional records for return of MX or SRV record types from the server. This is only possible when a zone is configured with a null target for MX or SRV records. Prior to 0.16.0 the additional record processing was not supported by trust-dns-server. There Are no known issues with upgrading from 0.16 or 0.17 to 0.18.1. The remidy should be to upgrade to 0.18.1. If unable to do so, MX, SRV or other record types with a target to the null type, should be avoided.

References

Published by the National Vulnerability Database Dec 31, 2020
Reviewed Aug 19, 2021
Published to the GitHub Advisory Database Aug 25, 2021
Last updated Dec 8, 2023

Severity

High
7.5
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses

CVE ID

CVE-2020-35857

GHSA ID

GHSA-4cww-f7w5-x525

Source code

Credits

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