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63 lines
2.0 KiB
63 lines
2.0 KiB
<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
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<glsa id="201903-02">
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<title>Zsh: User-assisted execution of arbitrary code</title>
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<synopsis>Input validation errors in Zsh could result in arbitrary code
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execution.
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</synopsis>
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<product type="ebuild">zsh</product>
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<announced>2019-03-10</announced>
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<revised count="1">2019-03-10</revised>
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<bug>665278</bug>
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<access>local, remote</access>
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<affected>
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<package name="app-shells/zsh" auto="yes" arch="*">
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<unaffected range="ge">5.6</unaffected>
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<vulnerable range="lt">5.6</vulnerable>
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</package>
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</affected>
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<background>
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<p>A shell designed for interactive use, although it is also a powerful
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scripting language.
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</p>
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</background>
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<description>
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<p>Two input validation errors have been discovered in how Zsh parses
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scripts:
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</p>
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<ul>
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<li>Parsing a malformed shebang line could cause Zsh to call a program
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listed in the second line (CVE-2018-0502)
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</li>
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<li>Shebang lines longer than 64 characters are truncated
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(CVE-2018-13259)
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</li>
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</ul>
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</description>
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<impact type="normal">
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<p>An attacker could entice a user to execute a specially crafted script
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using Zsh, possibly resulting in execution of arbitrary code with the
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privileges of the process.
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</p>
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</impact>
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<workaround>
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<p>There is no known workaround at this time.</p>
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</workaround>
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<resolution>
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<p>All Zsh users should upgrade to the latest version:</p>
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<code>
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# emerge --sync
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# emerge --ask --oneshot --verbose ">=app-shells/zsh-5.6"
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</code>
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</resolution>
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<references>
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<uri link="https://nvd.nist.gov/vuln/detail/CVE-2018-0502">CVE-2018-0502</uri>
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<uri link="https://nvd.nist.gov/vuln/detail/CVE-2018-13259">CVE-2018-13259</uri>
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</references>
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<metadata tag="requester" timestamp="2018-12-31T07:32:39Z">Zlogene</metadata>
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<metadata tag="submitter" timestamp="2019-03-10T02:21:31Z">ackle</metadata>
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</glsa>
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