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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="202309-13">
<title>GMP: Buffer Overflow Vulnerability</title>
<synopsis>A buffer overflow vulnerability has been found in GMP which could result in denial of service.</synopsis>
<product type="ebuild">gmp</product>
<announced>2023-09-29</announced>
<revised count="1">2023-09-29</revised>
<bug>823804</bug>
<access>remote</access>
<affected>
<package name="dev-libs/gmp" auto="yes" arch="*">
<unaffected range="ge">6.2.1-r2</unaffected>
<vulnerable range="lt">6.2.1-r2</vulnerable>
</package>
</affected>
<background>
<p>The GNU Multiple Precision Arithmetic Library is a library forarbitrary-precision arithmetic on different types of numbers.</p>
</background>
<description>
<p>There is an integer overflow leading to a buffer overflow when processing untrusted input via GMP's mpz_inp_raw function.</p>
</description>
<impact type="normal">
<p>Untrusted input can cause a denial of service via segmentation fault.</p>
</impact>
<workaround>
<p>Users can ensure no untrusted input is passed into GMP's mpz_inp_raw function.</p>
</workaround>
<resolution>
<p>All GMP users should upgrade to the latest version:</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-libs/gmp-6.2.1-r2"
</code>
</resolution>
<references>
<uri link="https://nvd.nist.gov/vuln/detail/CVE-2021-43618">CVE-2021-43618</uri>
</references>
<metadata tag="requester" timestamp="2023-09-29T13:02:07.835979Z">ajak</metadata>
<metadata tag="submitter" timestamp="2023-09-29T13:02:07.839044Z">graaff</metadata>
</glsa>
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