Explain CVE-2011-0064
The hb_buffer_ensure function in hb-buffer.c in HarfBuzz, as used in Pango 1.28.3, Firefox, and other products, does not verify that memory reallocations succeed, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) or possibly execute arbitrary code via crafted OpenType font data that triggers use of an incorrect index.
Affected Products: n/a
References: [{'name': 'USN-1082-1', 'tags': ['vendor-advisory', 'x_refsource_UBUNTU'], 'url': 'http://www.ubuntu.com/usn/USN-1082-1'}, {'name': '43578', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/43578'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://cgit.freedesktop.org/harfbuzz/commit/?id=a6a79df5fe2ed2cd307e7a991346faee164e70d9'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'https://bugzilla.novell.com/show_bug.cgi?id=672502'}, {'name': 'MDVSA-2011:040', 'tags': ['vendor-advisory', 'x_refsource_MANDRIVA'], 'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2011:040'}, {'name': 'ADV-2011-0543', 'tags': ['vdb-entry', 'x_refsource_VUPEN'], 'url': 'http://www.vupen.com/english/advisories/2011/0543'}, {'name': 'ADV-2011-0555', 'tags': ['vdb-entry', 'x_refsource_VUPEN'], 'url': 'http://www.vupen.com/english/advisories/2011/0555'}, {'name': 'SUSE-SR:2011:005', 'tags': ['vendor-advisory', 'x_refsource_SUSE'], 'url': 'http://lists.opensuse.org/opensuse-security-announce/2011-04/msg00000.html'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=678563'}, {'name': 'ADV-2011-0558', 'tags': ['vdb-entry', 'x_refsource_VUPEN'], 'url': 'http://www.vupen.com/english/advisories/2011/0558'}, {'name': '43800', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/43800'}, {'name': 'pango-hbbufferensure-bo(65770)', 'tags': ['vdb-entry', 'x_refsource_XF'], 'url': 'https://exchange.xforce.ibmcloud.com/vulnerabilities/65770'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'https://build.opensuse.org/request/show/63070'}, {'name': 'ADV-2011-0683', 'tags': ['vdb-entry', 'x_refsource_VUPEN'], 'url': 'http://www.vupen.com/english/advisories/2011/0683'}, {'name': '1025145', 'tags': ['vdb-entry', 'x_refsource_SECTRACK'], 'url': 'http://securitytracker.com/id?1025145'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'https://bugzilla.mozilla.org/show_bug.cgi?id=606997'}, {'name': 'FEDORA-2011-3194', 'tags': ['vendor-advisory', 'x_refsource_FEDORA'], 'url': 'http://lists.fedoraproject.org/pipermail/package-announce/2011-March/056065.html'}, {'name': '43559', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/43559'}, {'name': '43572', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/43572'}, {'name': 'ADV-2011-0584', 'tags': ['vdb-entry', 'x_refsource_VUPEN'], 'url': 'http://www.vupen.com/english/advisories/2011/0584'}, {'name': '46632', 'tags': ['vdb-entry', 'x_refsource_BID'], 'url': 'http://www.securityfocus.com/bid/46632'}, {'name': 'RHSA-2011:0309', 'tags': ['vendor-advisory', 'x_refsource_REDHAT'], 'url': 'http://www.redhat.com/support/errata/RHSA-2011-0309.html'}, {'name': 'DSA-2178', 'tags': ['vendor-advisory', 'x_refsource_DEBIAN'], 'url': 'http://www.debian.org/security/2011/dsa-2178'}]
CVE State: PUBLISHED