CVE-2017-9445

HIGH
7.5
CVSS Score
Published: June 28, 2017 at 06:00 AM UTC
Updated: June 17, 2026 at 01:28 AM UTC
1 product affected across 1 vendorSystemd

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Severity
HIGH7.5
Exploit prediction
EPSS 55%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

223 ≤ v ≤ 233

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (4)

x_refsource_CONFIRMMailing ListPatchThird Party Advisory
http://openwall.com/lists/oss-security/2017/06/27/8
VDB Entryx_refsource_BIDThird Party Advisory
http://www.securityfocus.com/bid/99302
VDB Entryx_refsource_SECTRACKThird Party Advisory
http://www.securitytracker.com/id/1038806
x_refsource_CONFIRMBroken Link
https://launchpad.net/bugs/1695546

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-787

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