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<?xml version="1.0" encoding="utf-8"?>
<glsa id="200404-09">
<title>Cross-realm trust vulnerability in Heimdal</title>
Heimdal contains cross-realm vulnerability allowing someone with control
over a realm to impersonate anyone in the cross-realm trust path.
<product type="ebuild">heimdal</product>
<announced>April 09, 2004</announced>
<revised>April 09, 2004: 01</revised>
<package name="app-crypt/heimdal" auto="yes" arch="*">
<unaffected range="ge">0.6.1</unaffected>
<vulnerable range="le">0.6.0</vulnerable>
Heimdal is a free implementation of Kerberos 5.
Heimdal does not properly perform certain consistency checks for
cross-realm requests, which allows remote attackers with control of a realm
to impersonate others in the cross-realm trust path.
<impact type="normal">
Remote attackers with control of a realm may be able to impersonate other
users in the cross-realm trust path.
A workaround is not currently known for this issue. All users are advised
to upgrade to the latest version of the affected package.
Heimdal users should upgrade to version 0.6.1 or later:
# emerge sync
# emerge -pv ">=app-crypt/heimdal-0.6.1"
# emerge ">=app-crypt/heimdal-0.6.1"</code>
<uri link="">CVE</uri>
<metadata tag="submitter">klieber</metadata>