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vulnerability announce CVE-2016-9840 CVE-2016-9841 CVE-2016-9842

zlib: five vulnerabilities

Synthesis of the vulnerability

An attacker can use several vulnerabilities of zlib.
Impacted software: iOS by Apple, iPhone, Mac OS X, Debian, Fedora, AIX, DB2 UDB, Domino, MQSeries, Notes, Security Directory Server, SPSS Statistics, Kubernetes, MariaDB ~ precise, MySQL Community, MySQL Enterprise, Java OpenJDK, openSUSE, openSUSE Leap, Java Oracle, Oracle OIT, Solaris, Percona Server, Python, RHEL, Slackware, SUSE Linux Enterprise Desktop, SLES, Nessus, zlib.
Severity of this computer vulnerability: 2/4.
Consequences of a hack: user access/rights, denial of service on service, denial of service on client.
Attacker's origin: document.
Number of vulnerabilities in this bulletin: 5.
Creation date: 05/12/2016.
Références of this announce: 1997877, 2001520, 2003212, 2004735, 2005160, 2005255, 2006014, 2006017, 2007242, 2010282, 2011648, 2014202, APPLE-SA-2017-09-19-1, APPLE-SA-2017-09-25-1, APPLE-SA-2017-09-25-4, bulletinapr2017, bulletinoct2018, CERTFR-2018-AVI-288, cpujul2018, cpuoct2017, cpuoct2018, CVE-2016-9840, CVE-2016-9841, CVE-2016-9842, CVE-2016-9843, DLA-1725-1, FEDORA-2018-242f6c1a41, FEDORA-2018-55b875c1ac, HT208144, ibm10718843, openSUSE-SU-2016:3202-1, openSUSE-SU-2017:0077-1, openSUSE-SU-2017:0080-1, openSUSE-SU-2017:2998-1, openSUSE-SU-2018:0042-1, openSUSE-SU-2018:3478-1, openSUSE-SU-2019:0327-1, RHSA-2017:1220-01, RHSA-2017:1221-01, RHSA-2017:1222-01, RHSA-2017:2999-01, RHSA-2017:3046-01, RHSA-2017:3047-01, SSA:2018-309-01, SUSE-SU-2017:1384-1, SUSE-SU-2017:1386-1, SUSE-SU-2017:1387-1, SUSE-SU-2017:1444-1, SUSE-SU-2017:2989-1, SUSE-SU-2017:3369-1, SUSE-SU-2017:3411-1, SUSE-SU-2017:3440-1, SUSE-SU-2017:3455-1, SUSE-SU-2018:0005-1, SUSE-SU-2018:3542-1, SUSE-SU-2018:3972-1, SUSE-SU-2018:4211-1, SUSE-SU-2019:0119-1, SUSE-SU-2019:0555-1, SUSE-SU-2019:2048-1, TNS-2018-08, VIGILANCE-VUL-21262.

Description of the vulnerability

Several vulnerabilities were announced in zlib.

An attacker can generate a memory corruption via Deflate External Linkage, in order to trigger a denial of service, and possibly to run code. [severity:2/4]

A pointer error may have a consequence. [severity:1/4]

An attacker can force a read at an invalid address via inftrees.c, in order to trigger a denial of service, or to obtain sensitive information. [severity:1/4; CVE-2016-9840, CVE-2016-9841]

A negative number shift is undefined. [severity:1/4; CVE-2016-9842]

An attacker can force a read at an invalid address via Big-endian Pointer, in order to trigger a denial of service, or to obtain sensitive information. [severity:1/4; CVE-2016-9843]
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