U radu programskog paketa libxml2 uočena je jedna sigurnosna ranjivost. Libxml2 je programska biblioteka koja omogućuje upravljanje XML i HTML datotekama. Ranjivost se očituje kao pogrešno upravljanje memorijom vezano uz korištenje XPath. Spomenutu ranjivost mogu iskoristiti udaljeni napadači, a rezultat uspješnog napada je izvođenje napada uskraćivanjem usluga (DoS napad). Kako bi izbjegli napad korištenjem opisane ranjivosti, svim korisnicima se savjetuje korištenje službene programske zakrpe.

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Fedora Update Notification
FEDORA-2011-2699
2011-03-05 01:43:05
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Name        : libxml2
Product     : Fedora 13
Version     : 2.7.7
Release     : 2.fc13
URL         : http://xmlsoft.org/
Summary     : Library providing XML and HTML support
Description :
This library allows to manipulate XML files. It includes support
to read, modify and write XML and HTML files. There is DTDs support
this includes parsing and validation even with complex DtDs, either
at parse time or later once the document has been modified. The output
can be a simple SAX stream or and in-memory DOM like representations.
In this case one can use the built-in XPath and XPointer implementation
to select subnodes or ranges. A flexible Input/Output mechanism is
available, with existing HTTP and FTP modules and combined to an
URI library.

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Update Information:

fix a case of double free in XPath
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ChangeLog:

* Fri Mar  4 2011 Daniel Veillard <Ova e-mail adresa je zaštićena od spambota. Potrebno je omogućiti JavaScript da je vidite.> - 2.7.7-2
- fix a double free in XPath CVE-2010-4494 bug 665965
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References:

  [ 1 ] Bug #665963 - CVE-2010-4494 libxml2: Memory corruption (double-free) in
XPath processing code
        https://bugzilla.redhat.com/show_bug.cgi?id=665963
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This update can be installed with the "yum" update program.  Use 
su -c 'yum update libxml2' at the command line.
For more information, refer to "Managing Software with yum",
available at http://docs.fedoraproject.org/yum/.

All packages are signed with the Fedora Project GPG key.  More details on the
GPG keys used by the Fedora Project can be found at
https://fedoraproject.org/keys
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