GLSA 202209-01: GNU Gzip, XZ Utils: Arbitrary file write
Severity: | high |
Title: | GNU Gzip, XZ Utils: Arbitrary file write |
Date: | 09/07/2022 |
Bugs: |
|
ID: | 202209-01 |
Synopsis
A vulnerability has been discovered in GNU Gzip and XZ Utils' grep helpers which could result in writes to arbitrary files.Background
GNU Gzip is a popular data compression program. XZ Utils is free general-purpose data compression software with a high compression ratio.
Affected packages
Package | Vulnerable | Unaffected | Architecture(s) |
---|---|---|---|
app-arch/xz-utils | < 5.2.5 | >= 5.2.5 | All supported architectures |
app-arch/gzip | < 1.12 | >= 1.12 | All supported architectures |
Description
GNU Gzip and XZ Utils' grep helpers do not sufficiently validate certain multi-line file names.
Impact
In some cases, writing to arbitrary files such as shell initialization files can be escalation to remote code execution.
Workaround
Ensuring only trusted input is passed to GNU Gzip and XZ Utils' grep helpers minimizes the potential impact.
Resolution
All GNU Gzip users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=app-arch/gzip-1.12"
All XZ Utils users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-arch/xz-utils-5.2.5"
References
Availability
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
Concerns?
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.
License
Copyright 2010 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.