CVE-2017-9445
mediumpriority · attend · 49EPSS 0.548 · 99 %ileEURUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–critical · 5–9.3
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (3)
Products and version ranges known to be affected.
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (13)
External citations — patches, advisories, analysis.
- http://openwall.com/lists/oss-security/2017/06/27/8cnnvd
- http://www.securitytracker.com/id/1038806cnnvd
- https://github.com/systemd/systemd/commit/a0166609f782da91710dea9183d1bf138538db37Patchcnnvd
- https://launchpad.net/bugs/1695546cnnvd
- https://www.securityfocus.com/bid/99302cnnvd
- http://openwall.com/lists/oss-security/2017/06/27/8enisa_euvd
- http://www.securityfocus.com/bid/99302enisa_euvd
- http://www.securitytracker.com/id/1038806enisa_euvd
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