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CVE-2017-9048

Status Candidate

Overview

libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a stack-based buffer overflow. The function xmlSnprintfElementContent in valid.c is supposed to recursively dump the element content definition into a char buffer 'buf' of size 'size'. At the end of the routine, the function may strcat two more characters without checking whether the current strlen(buf) + 2 < size. This vulnerability causes programs that use libxml2, such as PHP, to crash.

Related Files

Gentoo Linux Security Advisory 201711-01
Posted Nov 10, 2017
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201711-1 - Multiple vulnerabilities have been found in libxml2, the worst of which could result in the execution of arbitrary code. Versions prior to 2.9.4-r3 are affected.

tags | advisory, arbitrary, vulnerability
systems | linux, gentoo
advisories | CVE-2016-9318, CVE-2017-0663, CVE-2017-5969, CVE-2017-7375, CVE-2017-9047, CVE-2017-9048, CVE-2017-9049, CVE-2017-9050
MD5 | 56c81d3cb2b4a76a2ccc1a8327635179
Ubuntu Security Notice USN-3424-2
Posted Oct 11, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3424-2 - USN-3424-1 fixed several vulnerabilities in libxml2. This update provides the corresponding update for Ubuntu 12.04 ESM. A It was discovered that a type confusion error existed in libxml2. An A attacker could use this to specially construct XML data that A could cause a denial of service or possibly execute arbitrary A code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, vulnerability
systems | linux, ubuntu
advisories | CVE-2017-0663, CVE-2017-7375, CVE-2017-7376, CVE-2017-9047, CVE-2017-9048
MD5 | a992e0f194fd5ae3102acdd45b923004
Ubuntu Security Notice USN-3424-1
Posted Sep 19, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3424-1 - It was discovered that a type confusion error existed in libxml2. An attacker could use this to specially construct XML data that could cause a denial of service or possibly execute arbitrary code. It was discovered that libxml2 did not properly validate parsed entity references. An attacker could use this to specially construct XML data that could expose sensitive information. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2017-0663, CVE-2017-7375, CVE-2017-7376, CVE-2017-9047, CVE-2017-9048, CVE-2017-9049, CVE-2017-9050
MD5 | 4b0652d2acb742ad23250a852a802397
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