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Sigurnosni nedostaci programske biblioteke libxml2

  • Detalji os-a: WN7
  • Važnost: IMP
  • Operativni sustavi: L
  • Kategorije: LFE

Fedora Update Notification
2020-04-30 02:50:26.526439

Name : libxml2
Product : Fedora 30
Version : 2.9.10
Release : 3.fc30
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 sub nodes or ranges. A flexible Input/Output mechanism is
available, with existing HTTP and FTP modules and combined to an
URI library.

Update Information:

Update to 2.9.10 and fix CVE-2019-19956, CVE-2019-20388 and CVE-2020-7595

* Mon Feb 10 2020 David King <> – 2.9.10-3
– Fix CVE-2019-20388 (#1799736)
– Fix CVE-2020-7595 (#1799786)
* Fri Jan 3 2020 Jan Pokorny <> – 2.9.10-2
– Fix relaxed approach to nested documents on object disposal (#1780573)
* Fri Nov 8 2019 David King <> – 2.9.10-1
– Update to 2.9.10 (#1767151)

[ 1 ] Bug #1788857 – CVE-2019-19956 libxml2: There’s a memory leak in xmlParseBalancedChunkMemoryRecover in parser.c that could result in a crash [fedora-30]
[ 2 ] Bug #1799736 – CVE-2019-20388 libxml2: memory leak in xmlSchemaPreRun in xmlschemas.c [fedora-all]
[ 3 ] Bug #1799787 – CVE-2020-7595 libxml2: infinite loop in a certain end-of-file situation [fedora-all]

This update can be installed with the “dnf” update program. Use
su -c ‘dnf upgrade –advisory FEDORA-2020-0c71c00af4’ at the command
line. For more information, refer to the dnf documentation available at

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AutorVlatka Misic
Cert idNCERT-REF-2020-04-0001-ADV
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