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Gentoo Linux Security Advisory GLSA 202209-01 |
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https://security.gentoo.org/ |
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Severity: High |
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Title: GNU Gzip, XZ Utils: Arbitrary file write |
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Date: September 07, 2022 |
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Bugs: #837152, #837155 |
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ID: 202209-01 |
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Synopsis |
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======== |
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|
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A vulnerability has been discovered in GNU Gzip and XZ Utils' grep |
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helpers which could result in writes to arbitrary files. |
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Background |
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========== |
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GNU Gzip is a popular data compression program. |
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XZ Utils is free general-purpose data compression software with a high |
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compression ratio. |
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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 app-arch/gzip < 1.12 >= 1.12 |
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2 app-arch/xz-utils < 5.2.5 >= 5.2.5 |
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|
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Description |
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=========== |
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|
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GNU Gzip and XZ Utils' grep helpers do not sufficiently validate certain |
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multi-line file names. |
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Impact |
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====== |
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In some cases, writing to arbitrary files such as shell initialization files can be escalation to remote code execution. |
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Workaround |
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========== |
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Ensuring only trusted input is passed to GNU Gzip and XZ Utils' grep helpers minimizes the potential impact. |
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Resolution |
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========== |
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All GNU Gzip users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=app-arch/gzip-1.12" |
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All XZ Utils users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=app-arch/xz-utils-5.2.5" |
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References |
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========== |
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[ 1 ] CVE-2022-1271 |
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https://nvd.nist.gov/vuln/detail/CVE-2022-1271 |
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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/202209-01 |
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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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