In libxml2 before 2.9.14, several buffer handling functions in buf.c (xmlBuf) and tree.c (xmlBuffer) don't check for integer overflows. This can result in out-of-bounds memory writes. Exploitation requires a victim to open a crafted, multi-gigabyte XML file. Other software using libxml2's buffer functions, for example libxslt through 1.1.35, is affected as well.
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{ "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro", "ubuntu_priority": "medium", "binaries": [ { "libxml2": "2.9.3+dfsg1-1ubuntu0.7+esm2", "libxml2-udeb-dbgsym": "2.9.3+dfsg1-1ubuntu0.7+esm2", "libxml2-dev": "2.9.3+dfsg1-1ubuntu0.7+esm2", "libxml2-utils-dbgsym": "2.9.3+dfsg1-1ubuntu0.7+esm2", "libxml2-dbg": "2.9.3+dfsg1-1ubuntu0.7+esm2", "libxml2-utils": "2.9.3+dfsg1-1ubuntu0.7+esm2", "libxml2-doc": "2.9.3+dfsg1-1ubuntu0.7+esm2", "libxml2-dev-dbgsym": "2.9.3+dfsg1-1ubuntu0.7+esm2", "libxml2-dbgsym": "2.9.3+dfsg1-1ubuntu0.7+esm2", "libxml2-udeb": "2.9.3+dfsg1-1ubuntu0.7+esm2", "libxml2-utils-dbg": "2.9.3+dfsg1-1ubuntu0.7+esm2", "python-libxml2": "2.9.3+dfsg1-1ubuntu0.7+esm2", "python-libxml2-dbg": "2.9.3+dfsg1-1ubuntu0.7+esm2" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "libxml2": "2.9.4+dfsg1-6.1ubuntu1.6", "libxml2-dev": "2.9.4+dfsg1-6.1ubuntu1.6", "libxml2-utils-dbgsym": "2.9.4+dfsg1-6.1ubuntu1.6", "libxml2-utils": "2.9.4+dfsg1-6.1ubuntu1.6", "libxml2-doc": "2.9.4+dfsg1-6.1ubuntu1.6", "python3-libxml2": "2.9.4+dfsg1-6.1ubuntu1.6", "libxml2-dbg": "2.9.4+dfsg1-6.1ubuntu1.6", "python3-libxml2-dbg": "2.9.4+dfsg1-6.1ubuntu1.6", "python-libxml2-dbg": "2.9.4+dfsg1-6.1ubuntu1.6", "libxml2-udeb": "2.9.4+dfsg1-6.1ubuntu1.6", "python-libxml2": "2.9.4+dfsg1-6.1ubuntu1.6" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "libxml2": "2.9.10+dfsg-5ubuntu0.20.04.3", "libxml2-dev": "2.9.10+dfsg-5ubuntu0.20.04.3", "libxml2-utils-dbgsym": "2.9.10+dfsg-5ubuntu0.20.04.3", "libxml2-utils": "2.9.10+dfsg-5ubuntu0.20.04.3", "libxml2-doc": "2.9.10+dfsg-5ubuntu0.20.04.3", "python3-libxml2": "2.9.10+dfsg-5ubuntu0.20.04.3", "python-libxml2-dbg": "2.9.10+dfsg-5ubuntu0.20.04.3", "libxml2-dbgsym": "2.9.10+dfsg-5ubuntu0.20.04.3", "python3-libxml2-dbg": "2.9.10+dfsg-5ubuntu0.20.04.3", "python-libxml2": "2.9.10+dfsg-5ubuntu0.20.04.3" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "libxml2": "2.9.13+dfsg-1ubuntu0.1", "libxml2-dev": "2.9.13+dfsg-1ubuntu0.1", "libxml2-utils-dbgsym": "2.9.13+dfsg-1ubuntu0.1", "libxml2-utils": "2.9.13+dfsg-1ubuntu0.1", "libxml2-doc": "2.9.13+dfsg-1ubuntu0.1", "python3-libxml2": "2.9.13+dfsg-1ubuntu0.1", "libxml2-dbgsym": "2.9.13+dfsg-1ubuntu0.1", "python3-libxml2-dbgsym": "2.9.13+dfsg-1ubuntu0.1" } ] }