Test ID:	1.3.6.1.4.1.25623.1.0.842695
Category:	Ubuntu Local Security Checks
Title:	Ubuntu: Security Advisory (USN-2933-1)
Summary:	The remote host is missing an update for the 'exim4' package(s) announced via the USN-2933-1 advisory.
Description:	Summary: The remote host is missing an update for the 'exim4' package(s) announced via the USN-2933-1 advisory. Vulnerability Insight: It was discovered that Exim incorrectly filtered environment variables when used with the perl_startup configuration option. If the perl_startup option was enabled, a local attacker could use this issue to escalate their privileges to the root user. This issue has been fixed by having Exim clean the complete execution environment by default on startup, including any subprocesses such as transports that call other programs. This change in behaviour may break existing installations and can be adjusted by using two new configuration options, keep_environment and add_environment. (CVE-2016-1531) Patrick William discovered that Exim incorrectly expanded mathematical comparisons twice. A local attacker could possibly use this issue to perform arbitrary file operations as the Exim user. This issue only affected Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2014-2972) Affected Software/OS: 'exim4' package(s) on Ubuntu 12.04, Ubuntu 14.04, Ubuntu 15.10. Solution: Please install the updated package(s). CVSS Score: 6.9 CVSS Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2014-2972 http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136251.html http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136264.html https://security.gentoo.org/glsa/201607-12 https://lists.exim.org/lurker/message/20140722.145949.42c043f5.en.html https://lists.exim.org/lurker/message/20140722.152452.d6c019e8.en.html http://www.ubuntu.com/usn/USN-2933-1 Common Vulnerability Exposure (CVE) ID: CVE-2016-1531 Debian Security Information: DSA-3517 (Google Search) http://www.debian.org/security/2016/dsa-3517 https://www.exploit-db.com/exploits/39535/ https://www.exploit-db.com/exploits/39549/ https://www.exploit-db.com/exploits/39702/ http://packetstormsecurity.com/files/136124/Exim-4.84-3-Local-Root-Privilege-Escalation.html http://www.rapid7.com/db/modules/exploit/unix/local/exim_perl_startup http://www.securitytracker.com/id/1035512 SuSE Security Announcement: openSUSE-SU-2016:0721 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00026.html
Copyright	Copyright (C) 2016 Greenbone AG

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