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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="202105-07">
<title>Telegram: Security bypass</title>
<synopsis>An insufficient session expiration has been reported in Telegram.</synopsis>
<product type="ebuild">telegram</product>
<announced>2021-05-26</announced>
<revised count="1">2021-05-26</revised>
<bug>771684</bug>
<access>remote</access>
<affected>
<package name="net-im/telegram-desktop" auto="yes" arch="*">
<unaffected range="ge">2.4.11</unaffected>
<vulnerable range="lt">2.4.11</vulnerable>
</package>
<package name="net-im/telegram-desktop-bin" auto="yes" arch="*">
<unaffected range="ge">2.4.11</unaffected>
<vulnerable range="lt">2.4.11</vulnerable>
</package>
</affected>
<background>
<p>Telegram is a cloud-based mobile and desktop messaging app with a focus
on security and speed.
</p>
</background>
<description>
<p>It was discovered that Telegram failed to invalidate a recently active
session.
</p>
</description>
<impact type="low">
<p>Please review the referenced CVE identifiers for details.</p>
</impact>
<workaround>
<p>There is no known workaround at this time.</p>
</workaround>
<resolution>
<p>All Telegram users should upgrade to the latest version:</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-im/telegram-desktop-2.4.11"
</code>
<p>All Telegram binary users should upgrade to the latest version:</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose
">=net-im/telegram-desktop-bin-2.4.11"
</code>
</resolution>
<references>
<uri link="https://nvd.nist.gov/vuln/detail/CVE-2021-27351">CVE-2021-27351</uri>
</references>
<metadata tag="requester" timestamp="2021-05-25T20:11:43Z">whissi</metadata>
<metadata tag="submitter" timestamp="2021-05-26T08:12:28Z">whissi</metadata>
</glsa>
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