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Out-of-bounds Write Affecting systemd package, versions <233-10

0.0
high

Snyk CVSS

    Attack Complexity Low
    Availability High

    Threat Intelligence

    EPSS 52.83% (98th percentile)
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NVD
7.5 high
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Red Hat
7.5 high

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  • Snyk ID SNYK-DEBIANUNSTABLE-SYSTEMD-305124
  • published 28 Jun 2017
  • disclosed 28 Jun 2017
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Introduced: 28 Jun 2017

CVE-2017-9445 Open this link in a new tab
CWE-787 Open this link in a new tab

How to fix?

Upgrade Debian:unstable systemd to version 233-10 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream systemd package and not the systemd package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

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.