Test ID:	1.3.6.1.4.1.25623.1.0.891008
Category:	Debian Local Security Checks
Title:	Debian: Security Advisory (DLA-1008-1)
Summary:	The remote host is missing an update for the Debian 'libxml2' package(s) announced via the DLA-1008-1 advisory.
Description:	Summary: The remote host is missing an update for the Debian 'libxml2' package(s) announced via the DLA-1008-1 advisory. Vulnerability Insight: CVE-2017-7375 Missing validation for external entities in xmlParsePEReference CVE-2017-9047 / CVE-2017-9048 A buffer overflow was discovered in libxml2 20904-GITv2.9.4-16-g0741801. The function xmlSnprintfElementContent in valid.c is supposed to recursively dump the element content definition into a char buffer buf of size size. The variable len is assigned strlen(buf). If the content->type is XML_ELEMENT_CONTENT_ELEMENT, then (i) the content->prefix is appended to buf (if it actually fits) whereupon (ii) content->name is written to the buffer. However, the check for whether the content->name actually fits also uses len rather than the updated buffer length strlen(buf). This allows us to write about size many bytes beyond the allocated memory. This vulnerability causes programs that use libxml2, such as PHP, to crash. CVE-2017-9049 / CVE-2017-9050 libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a heap-based buffer over-read in the xmlDictComputeFastKey function in dict.c. This vulnerability causes programs that use libxml2, such as PHP, to crash. This vulnerability exists because of an incomplete fix for libxml2 Bug 759398. For Debian 7 Wheezy, these problems have been fixed in version 2.8.0+dfsg1-7+wheezy8. We recommend that you upgrade your libxml2 packages. Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: [link moved to references] Affected Software/OS: 'libxml2' package(s) on Debian 7. Solution: Please install the updated package(s). CVSS Score: 7.5 CVSS Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2017-7375 BugTraq ID: 98877 http://www.securityfocus.com/bid/98877 Debian Security Information: DSA-3952 (Google Search) https://www.debian.org/security/2017/dsa-3952 https://security.gentoo.org/glsa/201711-01 http://www.securitytracker.com/id/1038623 Common Vulnerability Exposure (CVE) ID: CVE-2017-9047 BugTraq ID: 98599 http://www.securityfocus.com/bid/98599 http://www.debian.org/security/2017/dsa-3952 http://www.openwall.com/lists/oss-security/2017/05/15/1 https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E Common Vulnerability Exposure (CVE) ID: CVE-2017-9048 BugTraq ID: 98556 http://www.securityfocus.com/bid/98556 Common Vulnerability Exposure (CVE) ID: CVE-2017-9049 BugTraq ID: 98601 http://www.securityfocus.com/bid/98601 Common Vulnerability Exposure (CVE) ID: CVE-2017-9050 BugTraq ID: 98568 http://www.securityfocus.com/bid/98568
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