Test ID:	1.3.6.1.4.1.25623.1.0.704053
Category:	Debian Local Security Checks
Title:	Debian: Security Advisory (DSA-4053-1)
Summary:	The remote host is missing an update for the Debian 'exim4' package(s) announced via the DSA-4053-1 advisory.
Description:	Summary: The remote host is missing an update for the Debian 'exim4' package(s) announced via the DSA-4053-1 advisory. Vulnerability Insight: Several vulnerabilities have been discovered in Exim, a mail transport agent. The Common Vulnerabilities and Exposures project identifies the following issues: CVE-2017-16943 A use-after-free vulnerability was discovered in Exim's routines responsible for parsing mail headers. A remote attacker can take advantage of this flaw to cause Exim to crash, resulting in a denial of service, or potentially for remote code execution. CVE-2017-16944 It was discovered that Exim does not properly handle BDAT data headers allowing a remote attacker to cause Exim to crash, resulting in a denial of service. For the stable distribution (stretch), these problems have been fixed in version 4.89-2+deb9u2. Default installations disable advertising the ESMTP CHUNKING extension and are not affected by these issues. We recommend that you upgrade your exim4 packages. For the detailed security status of exim4 please refer to its security tracker page at: [link moved to references] Affected Software/OS: 'exim4' package(s) on Debian 9. 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-2017-16943 Debian Security Information: DSA-4053 (Google Search) https://www.debian.org/security/2017/dsa-4053 http://openwall.com/lists/oss-security/2017/11/25/1 http://openwall.com/lists/oss-security/2017/11/25/2 http://openwall.com/lists/oss-security/2017/11/25/3 https://bugs.exim.org/show_bug.cgi?id=2199 https://git.exim.org/exim.git/commit/4090d62a4b25782129cc1643596dc2f6e8f63bde https://git.exim.org/exim.git/commitdiff/4e6ae6235c68de243b1c2419027472d7659aa2b4 https://github.com/LetUsFsck/PoC-Exploit-Mirror/tree/master/CVE-2017-16944 https://lists.exim.org/lurker/message/20171125.034842.d1d75cac.en.html http://www.openwall.com/lists/oss-security/2021/05/04/7 http://www.securitytracker.com/id/1039872 Common Vulnerability Exposure (CVE) ID: CVE-2017-16944 https://www.exploit-db.com/exploits/43184/ https://bugs.exim.org/show_bug.cgi?id=2201 http://www.securitytracker.com/id/1039873
Copyright	Copyright (C) 2017 Greenbone AG

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