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Gentoo Linux Security Advisory GLSA 200505-20 |
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http://security.gentoo.org/ |
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|
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Severity: High |
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Title: Mailutils: Multiple vulnerabilities in imap4d and mail |
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Date: May 27, 2005 |
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Bugs: #94053 |
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ID: 200505-20 |
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|
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Synopsis |
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======== |
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|
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The imap4d server and the mail utility from GNU Mailutils contain |
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multiple vulnerabilities, potentially allowing a remote attacker to |
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execute arbitrary code with root privileges. |
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|
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Background |
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========== |
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|
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GNU Mailutils is a collection of mail-related utilities, including an |
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IMAP4 server (imap4d) and a Mail User Agent (mail). |
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|
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Affected packages |
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================= |
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|
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------------------------------------------------------------------- |
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Package / Vulnerable / Unaffected |
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------------------------------------------------------------------- |
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1 net-mail/mailutils < 0.6-r1 >= 0.6-r1 |
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|
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Description |
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=========== |
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|
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infamous41d discovered several vulnerabilities in GNU Mailutils. imap4d |
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does not correctly implement formatted printing of command tags |
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(CAN-2005-1523), fails to validate the range sequence of the "FETCH" |
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command (CAN-2005-1522), and contains an integer overflow in the |
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"fetch_io" routine (CAN-2005-1521). mail contains a buffer overflow in |
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"header_get_field_name()" (CAN-2005-1520). |
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|
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Impact |
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====== |
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|
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A remote attacker can exploit the format string and integer overflow in |
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imap4d to execute arbitrary code as the imap4d user, which is usually |
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root. By sending a specially crafted email message, a remote attacker |
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could exploit the buffer overflow in the "mail" utility to execute |
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arbitrary code with the rights of the user running mail. Finally, a |
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remote attacker can also trigger a Denial of Service by sending a |
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malicious FETCH command to an affected imap4d, causing excessive |
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resource consumption. |
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|
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Workaround |
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========== |
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|
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There are no known workarounds at this time. |
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|
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Resolution |
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========== |
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All GNU Mailutils users should upgrade to the latest available version: |
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|
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=net-mail/mailutils-0.6-r1" |
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|
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References |
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========== |
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|
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[ 1 ] CAN-2005-1520 |
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http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1520 |
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[ 2 ] CAN-2005-1521 |
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http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1521 |
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[ 3 ] CAN-2005-1522 |
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http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1522 |
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[ 4 ] CAN-2005-1523 |
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http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1523 |
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[ 5 ] iDEFENSE 05.25.05 advisories |
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|
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http://www.idefense.com/application/poi/display?type=vulnerabilities&showYear=2005 |
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|
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Availability |
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============ |
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|
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This GLSA and any updates to it are available for viewing at |
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the Gentoo Security Website: |
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http://security.gentoo.org/glsa/glsa-200505-20.xml |
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|
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Concerns? |
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========= |
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|
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Security is a primary focus of Gentoo Linux and ensuring the |
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confidentiality and security of our users machines is of utmost |
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importance to us. Any security concerns should be addressed to |
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security@g.o or alternatively, you may file a bug at |
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http://bugs.gentoo.org. |
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|
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License |
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======= |
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Copyright 2005 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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|
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The contents of this document are licensed under the |
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Creative Commons - Attribution / Share Alike license. |
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|
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http://creativecommons.org/licenses/by-sa/2.0 |