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Loop with Unreachable Exit Condition ('Infinite Loop') Affecting systemd package, versions <235-3

0.0
high

Snyk CVSS

    Attack Complexity Low
    Availability High

    Threat Intelligence

    EPSS 95.51% (100th 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-DEBIAN10-SYSTEMD-305076
  • published 26 Oct 2017
  • disclosed 26 Oct 2017
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Introduced: 26 Oct 2017

CVE-2017-15908 Open this link in a new tab
CWE-835 Open this link in a new tab

How to fix?

Upgrade Debian:10 systemd to version 235-3 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:10 relevant fixed versions and status.

In systemd 223 through 235, a remote DNS server can respond with a custom crafted DNS NSEC resource record to trigger an infinite loop in the dns_packet_read_type_window() function of the 'systemd-resolved' service and cause a DoS of the affected service.