UBUNTU-CVE-2026-93657

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Source

https://ubuntu.com/security/CVE-2026-93657

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-93657.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-93657

Upstream

CVE-2026-93657

Published

2026-09-21T00:00:00Z

Modified

2026-09-21T21:40:59Z

Severity

7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

hickory-resolver versions before 0.26.2 fail to propagate bogus DNSSEC proof states through the Resolver::lookup() and Resolver::lookup_ip() APIs, allowing invalid records to be returned as successful results. Attackers controlling the answering zone or positioned on the network path can have forged DNS records accepted as validated, bypassing DNSSEC authentication checks.

References

Affected packages

Ubuntu:24.04:LTS / rust-hickory-resolver

Package

Name: rust-hickory-resolver
Purl: pkg:deb/ubuntu/rust-hickory-resolver?arch=source&distro=noble

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.24.0-1

Ecosystem specific

{
    "binaries":  [
        {
            "binary_name":  "librust-hickory-resolver-dev",
            "binary_version":  "0.24.0-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-93657.json"

Ubuntu:26.04:LTS / rust-hickory-resolver