Debian LTS: Security Advisory for libxml2 (DLA-2369-1)

The remote host is missing an update for the 'libxml2' package(s) announced via the DLA-2369-1 advisory.

Several security vulnerabilities were corrected in libxml2, the GNOME XML library. CVE-2017-8872 Global buffer-overflow in the htmlParseTryOrFinish function. CVE-2017-18258 The xz_head function in libxml2 allows remote attackers to cause a denial of service (memory consumption) via a crafted LZMA file, because the decoder functionality does not restrict memory usage to what is required for a legitimate file. CVE-2018-14404 A NULL pointer dereference vulnerability exists in the xpath.c:xmlXPathCompOpEval() function of libxml2 when parsing an invalid XPath expression in the XPATH_OP_AND or XPATH_OP_OR case. Applications processing untrusted XSL format inputs may be vulnerable to a denial of service attack. CVE-2018-14567 If the option --with-lzma is used, allows remote attackers to cause a denial of service (infinite loop) via a crafted XML file. CVE-2019-19956 The xmlParseBalancedChunkMemoryRecover function has a memory leak related to newDoc->oldNs. CVE-2019-20388 A memory leak was found in the xmlSchemaValidateStream function of libxml2. Applications that use this library may be vulnerable to memory not being freed leading to a denial of service. CVE-2020-7595 Infinite loop in xmlStringLenDecodeEntities can cause a denial of service. CVE-2020-24977 Out-of-bounds read restricted to xmllint --htmlout.

'libxml2' package(s) on Debian Linux.

Checks if a vulnerable package version is present on the target host.

For Debian 9 stretch, these problems have been fixed in version 2.9.4+dfsg1-2.2+deb9u3. We recommend that you upgrade your libxml2 packages.