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


Severity

0.0
high
0
10

    Threat Intelligence

    EPSS
    52.83% (98th percentile)

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  • Snyk ID SNYK-DEBIAN12-SYSTEMD-1560708
  • published 28 Jun 2017
  • disclosed 28 Jun 2017

How to fix?

Upgrade Debian:12 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:12 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.

CVSS Scores

version 3.1
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Snyk

7.5 high
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    High
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NVD

7.5 high
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Red Hat

7.5 high