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.
Analysis and contextual insights are available on OpenCVE Cloud.
Remediation
No vendor fix or workaround currently provided.
Additional remediation guidance may be available on OpenCVE Cloud.
Tracking
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Advisories
| Source | ID | Title |
|---|---|---|
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 |
USN-3341-1 | Systemd vulnerability |
References
History
No history.
Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2024-08-05T17:11:01.693Z
Reserved: 2017-06-05T00:00:00.000Z
Link: CVE-2017-9445
No data.
Status : Modified
Published: 2017-06-28T06:29:00.190
Modified: 2026-05-13T00:24:29.033
Link: CVE-2017-9445
OpenCVE Enrichment
No data.
Weaknesses
EUVD
Ubuntu USN