libxml2: Multiple vulnerabilities

libxml2: Multiple vulnerabilities Multiple vulnerabilities in libxml2 might lead to execution of arbitrary code or Denial of Service. libxml2 2008-12-02 2008-12-02 234099 237806 239346 245960 remote 2.7.2-r1 2.7.2-r1

libxml2 is the XML (eXtended Markup Language) C parser and toolkit initially developed for the Gnome project.

Multiple vulnerabilities were reported in libxml2:

Andreas Solberg reported that libxml2 does not properly detect recursion during entity expansion in an attribute value (CVE-2008-3281).
A heap-based buffer overflow has been reported in the xmlParseAttValueComplex() function in parser.c (CVE-2008-3529).
Christian Weiske reported that predefined entity definitions in entities are not properly handled (CVE-2008-4409).
Drew Yao of Apple Product Security reported an integer overflow in the xmlBufferResize() function that can lead to an infinite loop (CVE-2008-4225).
Drew Yao of Apple Product Security reported an integer overflow in the xmlSAX2Characters() function leading to a memory corruption (CVE-2008-4226).

A remote attacker could entice a user or automated system to open a specially crafted XML document with an application using libxml2, possibly resulting in the exeution of arbitrary code or a high CPU and memory consumption.

There is no known workaround at this time.

All libxml2 users should upgrade to the latest version:


    # emerge --sync
    # emerge --ask --oneshot --verbose ">=dev-libs/libxml2-2.7.2-r1"

CVE-2008-3281 CVE-2008-3529 CVE-2008-4409 CVE-2008-4225 CVE-2008-4226 keytoaster rbu rbu