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Gentoo Linux Security Advisory GLSA 202201-01 |
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https://security.gentoo.org/ |
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Severity: High |
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Title: Polkit: Local privilege escalation |
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Date: January 27, 2022 |
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Bugs: #832057 |
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ID: 202201-01 |
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Synopsis |
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======== |
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A vulnerability in polkit could lead to local root privilege escalation. |
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Background |
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========== |
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polkit is a toolkit for managing policies related to unprivileged |
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processes communicating with privileged process. |
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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 sys-auth/polkit < 0.120-r2 >= 0.120-r2 |
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Description |
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=========== |
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Flawed input validation of arguments was discovered in the 'pkexec' |
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program's main() function. |
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Impact |
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====== |
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A local attacker could achieve root privilege escalation. |
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Workaround |
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========== |
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Run the following command as root: |
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# chmod 0755 /usr/bin/pkexec |
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Resolution |
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========== |
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Upgrade Polkit to a patched version. |
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emerge --ask --verbose ">=sys-auth/polkit-0.120-r2" |
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References |
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========== |
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[ 1 ] CVE-2021-4034 |
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https://nvd.nist.gov/vuln/detail/CVE-2021-4034 |
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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/202201-01 |
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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 2022 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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