Description
In systemd through 233, certain sizes passed to dns_packet_new in systemd-resolved can cause it to allocate a buffer that's too small. A malicious DNS server can exploit this via a response with a specially crafted TCP payload to trick systemd-resolved into allocating a buffer that's too small, and subsequently write arbitrary data beyond the end of it.
Published: 2017-06-28
Score: 7.5 High
EPSS: 1.3% Low
KEV: No
Impact: n/a
Action: n/a
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Remediation

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2017-18378 In systemd through 233, certain sizes passed to dns_packet_new in systemd-resolved can cause it to allocate a buffer that's too small. A malicious DNS server can exploit this via a response with a specially crafted TCP payload to trick systemd-resolved into allocating a buffer that's too small, and subsequently write arbitrary data beyond the end of it.
Ubuntu USN Ubuntu USN USN-3341-1 Systemd vulnerability
History

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Subscriptions

Systemd Project Systemd
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-05T17:11:01.693Z

Reserved: 2017-06-05T00:00:00.000Z

Link: CVE-2017-9445

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2017-06-28T06:29:00.190

Modified: 2026-05-13T00:24:29.033

Link: CVE-2017-9445

cve-icon Redhat

Severity : Important

Publid Date: 2017-06-27T00:00:00Z

Links: CVE-2017-9445 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses