CVE-2017-9445
Last modified
CVE-2017-9445 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 55.12% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Systemd Project | Systemd | >= 223, <= 233 |
References
- http://openwall.com/lists/oss-security/2017/06/27/8Mailing List, Patch, Third Party Advisory
- http://www.securityfocus.com/bid/99302Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1038806Third Party Advisory, VDB Entry
- https://launchpad.net/bugs/1695546Broken Link
- http://openwall.com/lists/oss-security/2017/06/27/8Mailing List, Patch, Third Party Advisory
- http://www.securityfocus.com/bid/99302Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1038806Third Party Advisory, VDB Entry
- https://launchpad.net/bugs/1695546Broken Link
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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