drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Pufferüberlauf in libspf2
Name: |
Pufferüberlauf in libspf2 |
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ID: |
200810-03 |
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Distribution: |
Gentoo |
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Plattformen: |
Keine Angabe |
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Datum: |
Do, 30. Oktober 2008, 23:21 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2469 |
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Applikationen: |
libspf2 |
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Originalnachricht |
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- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200810-03 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: High Title: libspf2: DNS response buffer overflow Date: October 30, 2008 Bugs: #242254 ID: 200810-03
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Synopsis ========
A memory management error in libspf2 might allow for remote execution of arbitrary code.
Background ==========
libspf2 is a library that implements the Sender Policy Framework, allowing mail transfer agents to make sure that an email is authorized by the domain name that it is coming from. Currently, only the exim MTA uses libspf2 in Gentoo.
Affected packages =================
------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 mail-filter/libspf2 < 1.2.8 >= 1.2.8
Description ===========
libspf2 uses a fixed-length buffer to receive DNS responses and does not properly check the length of TXT records, leading to buffer overflows.
Impact ======
A remote attacker could store a specially crafted DNS entry and entice a user or automated system using libspf2 to lookup that SPF entry (e.g. by sending an email to the MTA), possibly allowing for the execution of arbitrary code.
Workaround ==========
There is no known workaround at this time.
Resolution ==========
All libspf2 users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=mail-filter/libspf2-1.2.8"
References ==========
[ 1 ] CVE-2008-2469 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2469
Availability ============
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200810-03.xml
Concerns? =========
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at http://bugs.gentoo.org.
License =======
Copyright 2008 Gentoo Foundation, Inc; referenced text belongs to its owner(s).
The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.
http://creativecommons.org/licenses/by-sa/2.5
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