Gentoo Archives: gentoo-announce

From: Thomas Deutschmann <whissi@g.o>
To: gentoo-announce@l.g.o
Subject: [gentoo-announce] [ GLSA 201906-01 ] Exim: Remote command execution
Date: Thu, 06 Jun 2019 17:33:38
Message-Id: 6dff6481-a0d8-23ea-f455-1e1d2b7be7c3@gentoo.org
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2 Gentoo Linux Security Advisory GLSA 201906-01
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4 https://security.gentoo.org/
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6
7 Severity: High
8 Title: Exim: Remote command execution
9 Date: June 06, 2019
10 Bugs: #687336
11 ID: 201906-01
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14
15 Synopsis
16 ========
17
18 A vulnerability in Exim could allow a remote attacker to execute
19 arbitrary commands.
20
21 Background
22 ==========
23
24 Exim is a message transfer agent (MTA) designed to be a a highly
25 configurable, drop-in replacement for sendmail.
26
27 Affected packages
28 =================
29
30 -------------------------------------------------------------------
31 Package / Vulnerable / Unaffected
32 -------------------------------------------------------------------
33 1 mail-mta/exim < 4.92 >= 4.92
34
35 Description
36 ===========
37
38 A vulnerability was discovered in how Exim validates recipient
39 addresses in the deliver_message() function.
40
41 Impact
42 ======
43
44 A remote attacker could execute arbitrary commands by sending an email
45 with a specially crafted recipient address to the affected system.
46
47 Workaround
48 ==========
49
50 There is no known workaround at this time.
51
52 Resolution
53 ==========
54
55 All Exim users should upgrade to the latest version:
56
57 # emerge --sync
58 # emerge --ask --oneshot --verbose ">=mail-mta/exim-4.92"
59
60 References
61 ==========
62
63 [ 1 ] CVE-2019-10149
64 https://nvd.nist.gov/vuln/detail/CVE-2019-10149
65
66 Availability
67 ============
68
69 This GLSA and any updates to it are available for viewing at
70 the Gentoo Security Website:
71
72 https://security.gentoo.org/glsa/201906-01
73
74 Concerns?
75 =========
76
77 Security is a primary focus of Gentoo Linux and ensuring the
78 confidentiality and security of our users' machines is of utmost
79 importance to us. Any security concerns should be addressed to
80 security@g.o or alternatively, you may file a bug at
81 https://bugs.gentoo.org.
82
83 License
84 =======
85
86 Copyright 2019 Gentoo Foundation, Inc; referenced text
87 belongs to its owner(s).
88
89 The contents of this document are licensed under the
90 Creative Commons - Attribution / Share Alike license.
91
92 https://creativecommons.org/licenses/by-sa/2.5

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