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77 lines
2.9 KiB
77 lines
2.9 KiB
<?xml version="1.0" encoding="utf-8"?>
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<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
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<glsa id="200507-11">
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<title>MIT Kerberos 5: Multiple vulnerabilities</title>
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<synopsis>
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MIT Kerberos 5 is vulnerable to a Denial of Service attack and remote
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execution of arbitrary code, possibly leading to the compromise of the
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entire Kerberos realm.
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</synopsis>
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<product type="ebuild">mit-krb5</product>
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<announced>2005-07-12</announced>
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<revised count="01">2005-07-12</revised>
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<bug>98799</bug>
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<access>remote</access>
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<affected>
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<package name="app-crypt/mit-krb5" auto="yes" arch="*">
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<unaffected range="ge">1.4.1-r1</unaffected>
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<vulnerable range="lt">1.4.1-r1</vulnerable>
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</package>
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</affected>
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<background>
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<p>
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MIT Kerberos 5 is the free implementation of the Kerberos network
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authentication protocol by the Massachusetts Institute of Technology.
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</p>
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</background>
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<description>
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<p>
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Daniel Wachdorf discovered that MIT Kerberos 5 could corrupt the
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heap by freeing unallocated memory when receiving a special TCP request
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(CAN-2005-1174). He also discovered that the same request could lead to
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a single-byte heap overflow (CAN-2005-1175). Magnus Hagander discovered
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that krb5_recvauth() function of MIT Kerberos 5 might try to
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double-free memory (CAN-2005-1689).
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</p>
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</description>
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<impact type="high">
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<p>
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Although exploitation is considered difficult, a remote attacker
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could exploit the single-byte heap overflow and the double-free
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vulnerability to execute arbitrary code, which could lead to the
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compromise of the whole Kerberos realm. A remote attacker could also
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use the heap corruption to cause a Denial of Service.
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</p>
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</impact>
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<workaround>
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<p>
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There are no known workarounds at this time.
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</p>
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</workaround>
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<resolution>
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<p>
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All MIT Kerberos 5 users should upgrade to the latest available
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version:
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</p>
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<code>
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# emerge --sync
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# emerge --ask --oneshot --verbose ">=app-crypt/mit-krb5-1.4.1-r1"</code>
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</resolution>
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<references>
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<uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1174">CAN-2005-1174</uri>
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<uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1175">CAN-2005-1175</uri>
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<uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1689">CAN-2005-1689</uri>
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<uri link="http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2005-002-kdc.txt">MITKRB5-SA-2005-002</uri>
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<uri link="http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2005-003-recvauth.txt">MITKRB5-SA-2005-003</uri>
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</references>
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<metadata tag="requester" timestamp="2005-07-08T08:49:39Z">
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koon
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</metadata>
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<metadata tag="submitter" timestamp="2005-07-08T14:57:37Z">
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DerCorny
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</metadata>
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<metadata tag="bugReady" timestamp="2005-07-12T19:05:46Z">
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jaervosz
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</metadata>
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</glsa>
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