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Gentoo Linux Security Advisory GLSA 202105-35 |
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https://security.gentoo.org/ |
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Severity: Normal |
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Title: OpenSSH: Multiple vulnerabilities |
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Date: May 26, 2021 |
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Bugs: #763048, #774090 |
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ID: 202105-35 |
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Synopsis |
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======== |
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|
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Multiple vulnerabilities have been found in OpenSSH, the worst of which |
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could allow a remote attacker to execute arbitrary code. |
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Background |
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========== |
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|
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OpenSSH is a complete SSH protocol implementation that includes SFTP |
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client and server support. |
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|
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Affected packages |
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================= |
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|
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------------------------------------------------------------------- |
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Package / Vulnerable / Unaffected |
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------------------------------------------------------------------- |
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1 net-misc/openssh < 8.5_p1 >= 8.5_p1 |
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Description |
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=========== |
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|
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Multiple vulnerabilities have been discovered in OpenSSH. Please review |
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the CVE identifiers referenced below for details. |
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|
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Impact |
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====== |
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|
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A remote attacker, able to access the socket of the forwarding agent, |
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might be able to execute arbitrary code with the privileges of the |
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process or cause a Denial of Service condition. |
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Furthermore, a remote attacker might conduct a man-in-the-middle attack |
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targeting initial connection attempts where no host key for the server |
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has been cached by client yet. |
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|
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Workaround |
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========== |
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There is no known workaround at this time. |
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Resolution |
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========== |
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All OpenSSH users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=net-misc/openssh-8.5_p1" |
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References |
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========== |
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[ 1 ] CVE-2020-14145 |
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https://nvd.nist.gov/vuln/detail/CVE-2020-14145 |
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[ 2 ] CVE-2021-28041 |
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https://nvd.nist.gov/vuln/detail/CVE-2021-28041 |
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|
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Availability |
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============ |
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This GLSA and any updates to it are available for viewing at |
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the Gentoo Security Website: |
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https://security.gentoo.org/glsa/202105-35 |
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Concerns? |
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========= |
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Security is a primary focus of Gentoo Linux and ensuring the |
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confidentiality and security of our users' machines is of utmost |
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importance to us. Any security concerns should be addressed to |
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security@g.o or alternatively, you may file a bug at |
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https://bugs.gentoo.org. |
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License |
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======= |
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Copyright 2021 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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The contents of this document are licensed under the |
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Creative Commons - Attribution / Share Alike license. |
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https://creativecommons.org/licenses/by-sa/2.5 |
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