glsa-202209-01.xml


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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="202209-01">
    <title>GNU Gzip, XZ Utils: Arbitrary file write</title>
    <synopsis>A vulnerability has been discovered in GNU Gzip and XZ Utils&#39; grep helpers which could result in writes to arbitrary files.</synopsis>
    <product type="ebuild">gzip,xz-utils</product>
    <announced>2022-09-07</announced>
    <revised count="1">2022-09-07</revised>
    <bug>837152</bug>
    <bug>837155</bug>
    <access>remote</access>
    <affected>
        <package name="app-arch/gzip" auto="yes" arch="*">
            <unaffected range="ge">1.12</unaffected>
            <vulnerable range="lt">1.12</vulnerable>
        </package>
        <package name="app-arch/xz-utils" auto="yes" arch="*">
            <unaffected range="ge">5.2.5</unaffected>
            <vulnerable range="lt">5.2.5</vulnerable>
        </package>
    </affected>
    <background>
        <p>GNU Gzip is a popular data compression program.

XZ Utils is free general-purpose data compression software with a high compression ratio.</p>
    </background>
    <description>
        <p>GNU Gzip and XZ Utils&#39; grep helpers do not sufficiently validate certain multi-line file names.</p>
    </description>
    <impact type="high">
        <p>In some cases, writing to arbitrary files such as shell initialization files can be escalation to remote code execution.</p>
    </impact>
    <workaround>
        <p>Ensuring only trusted input is passed to GNU Gzip and XZ Utils&#39; grep helpers minimizes the potential impact.</p>
    </workaround>
    <resolution>
        <p>All GNU Gzip users should upgrade to the latest version:</p>
        
        <code>
          # emerge --sync
          # emerge --ask --oneshot --verbose ">=app-arch/gzip-1.12"
        </code>
        
        <p>All XZ Utils users should upgrade to the latest version:</p>
        
        <code>
          # emerge --sync
          # emerge --ask --oneshot --verbose ">=app-arch/xz-utils-5.2.5"
        </code>
    </resolution>
    <references>
        <uri link="https://nvd.nist.gov/vuln/detail/CVE-2022-1271">CVE-2022-1271</uri>
    </references>
    <metadata tag="requester" timestamp="2022-09-07T02:51:56.494624Z">ajak</metadata>
    <metadata tag="submitter" timestamp="2022-09-07T02:51:56.504364Z">ajak</metadata>
</glsa>