<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd"> <glsa id="202011-10"> <title>tmux: Buffer overflow</title> <synopsis>A buffer overflow in tmux might allow remote attacker(s) to execute arbitrary code. </synopsis> <product type="ebuild">tmux</product> <announced>2020-11-11</announced> <revised count="1">2020-11-11</revised> <bug>753206</bug> <access>remote</access> <affected> <package name="app-misc/tmux" auto="yes" arch="*"> <unaffected range="ge">3.1c</unaffected> <vulnerable range="lt">3.1c</vulnerable> </package> </affected> <background> <p>tmux is a terminal multiplexer.</p> </background> <description> <p>A flaw in tmux’s handling of escape characters was discovered which may allow a buffer overflow. </p> </description> <impact type="normal"> <p>A remote attacker could possibly execute arbitrary code with the privileges of the process, or cause a Denial of Service condition. </p> </impact> <workaround> <p>There is no known workaround at this time.</p> </workaround> <resolution> <p>All tmux users should upgrade to the latest version:</p> <code> # emerge --sync # emerge --ask --oneshot --verbose ">=app-misc/tmux-3.1c" </code> </resolution> <references> <uri link="https://nvd.nist.gov/vuln/detail/CVE-2020-27347">CVE-2020-27347</uri> </references> <metadata tag="requester" timestamp="2020-11-09T23:15:04Z">sam_c</metadata> <metadata tag="submitter" timestamp="2020-11-11T03:36:59Z">sam_c</metadata> </glsa>