<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd"> <glsa id="202105-34"> <title>Bash: Privilege escalation</title> <synopsis>A vulnerability in Bash may allow users to escalate privileges.</synopsis> <product type="ebuild">bash</product> <announced>2021-05-26</announced> <revised count="1">2021-05-26</revised> <bug>702488</bug> <access>local</access> <affected> <package name="app-shells/bash" auto="yes" arch="*"> <unaffected range="ge">5.0_p11-r1</unaffected> <vulnerable range="lt">5.0_p11-r1</vulnerable> </package> </affected> <background> <p>Bash is the standard GNU Bourne Again SHell.</p> </background> <description> <p>It was discovered that Bash incorrectly dropped privileges by setting its effective UID to its real UID. </p> </description> <impact type="normal"> <p>A local attacker could possibly escalate privileges.</p> </impact> <workaround> <p>There is no known workaround at this time.</p> </workaround> <resolution> <p>All Bash users should upgrade to the latest version:</p> <code> # emerge --sync # emerge --ask --oneshot --verbose ">=app-shells/bash-5.0_p11-r1" </code> </resolution> <references> <uri link="https://nvd.nist.gov/vuln/detail/CVE-2019-18276">CVE-2019-18276</uri> </references> <metadata tag="requester" timestamp="2021-05-25T19:22:45Z">whissi</metadata> <metadata tag="submitter" timestamp="2021-05-26T10:13:27Z">whissi</metadata> </glsa>