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Double Free Affecting openssh package, versions <1:8.4p1-5

0.0
high

Snyk CVSS

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

    Threat Intelligence

    EPSS 0.18% (56th percentile)
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NVD
7.1 high
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Red Hat
7.1 high
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SUSE
7.1 high

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  • Snyk ID SNYK-DEBIAN11-OPENSSH-1082958
  • published 6 Mar 2021
  • disclosed 5 Mar 2021
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Introduced: 5 Mar 2021

CVE-2021-28041 Open this link in a new tab
CWE-415 Open this link in a new tab

How to fix?

Upgrade Debian:11 openssh to version 1:8.4p1-5 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssh package and not the openssh package as distributed by Debian. See How to fix? for Debian:11 relevant fixed versions and status.

ssh-agent in OpenSSH before 8.5 has a double free that may be relevant in a few less-common scenarios, such as unconstrained agent-socket access on a legacy operating system, or the forwarding of an agent to an attacker-controlled host.

References