CVE-2019-16928 Information

Description

Exim 4.92 through 4.92.2 allows remote code execution a different vulnerability than CVE-2019-15846. There is a heap-based buffer overflow in string_vformat in string.c involving a long EHLO command.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

http://www.openwall.com/lists/oss-security/2019/09/28/1 http://www.openwall.com/lists/oss-security/2019/09/28/2 http://www.openwall.com/lists/oss-security/2019/09/28/3 http://www.openwall.com/lists/oss-security/2019/09/28/4 https://bugs.exim.org/show_bug.cgi?id=2449 https://git.exim.org/exim.git/commit/478effbfd9c3cc5a627fc671d4bf94d13670d65f https://lists.exim.org/lurker/message/20190927.032457.c1044d4c.en.html https://lists.fedoraproject.org/archives/list/[email protected]/message/EED7HM3MFIBAP5OIMJAFJ35JAJABTVSC/ https://lists.fedoraproject.org/archives/list/[email protected]/message/T3TJW4HPYH3O5HZCWGD6NSHTEBTTAPDC/ https://lists.fedoraproject.org/archives/list/[email protected]/message/UY6HPRW7MR3KBQ5JFHH6OXM7YCZBJCOB/ https://seclists.org/bugtraq/2019/Sep/60 https://security.gentoo.org/glsa/202003-47 https://usn.ubuntu.com/4141-1/ https://www.debian.org/security/2019/dsa-4536

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8