Integer Underflow Affecting grub2-systemd-sleep-plugin package, versions <2.04-150300.22.20.2


0.0
high

Snyk CVSS

    Attack Complexity Low
    User Interaction Required
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.06% (26th percentile)
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NVD
8.1 high
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SUSE
8.8 high
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Red Hat
8.1 high

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  • Snyk ID SNYK-SLES153-GRUB2SYSTEMDSLEEPPLUGIN-2869553
  • published 14 Jun 2022
  • disclosed 13 Jun 2022

How to fix?

Upgrade SLES:15.3 grub2-systemd-sleep-plugin to version 2.04-150300.22.20.2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream grub2-systemd-sleep-plugin package and not the grub2-systemd-sleep-plugin package as distributed by SLES. See How to fix? for SLES:15.3 relevant fixed versions and status.

Integer underflow in grub_net_recv_ip4_packets; A malicious crafted IP packet can lead to an integer underflow in grub_net_recv_ip4_packets() function on rsm->total_len value. Under certain circumstances the total_len value may end up wrapping around to a small integer number which will be used in memory allocation. If the attack succeeds in such way, subsequent operations can write past the end of the buffer.