Gentoo Archives: gentoo-announce

From: Thomas Deutschmann <whissi@g.o>
To: gentoo-announce@l.g.o
Subject: [gentoo-announce] [ GLSA 201702-14 ] PyCrypto: Remote execution of arbitrary code
Date: Mon, 20 Feb 2017 23:27:37
Message-Id: bfff9c2c-35fb-6730-2a12-596d74a3ba7f@gentoo.org
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2 Gentoo Linux Security Advisory GLSA 201702-14
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4 https://security.gentoo.org/
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6
7 Severity: Normal
8 Title: PyCrypto: Remote execution of arbitrary code
9 Date: February 20, 2017
10 Bugs: #576494
11 ID: 201702-14
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14
15 Synopsis
16 ========
17
18 A heap-based buffer overflow in PyCrypto might allow remote attackers
19 to execute arbitrary code.
20
21 Background
22 ==========
23
24 The Python Cryptography Toolkit (PyCrypto) is a collection of both
25 secure hash functions (such as SHA256 and RIPEMD160), and various
26 encryption algorithms (AES, DES, RSA, ElGamal, etc.).
27
28 Affected packages
29 =================
30
31 -------------------------------------------------------------------
32 Package / Vulnerable / Unaffected
33 -------------------------------------------------------------------
34 1 dev-python/pycrypto < 2.6.1-r2 >= 2.6.1-r2
35
36 Description
37 ===========
38
39 A heap-based buffer overflow vulnerability has been discovered in
40 PyCrypto. Please review the CVE identifier referenced below for
41 details.
42
43 Impact
44 ======
45
46 A remote attacker, able to control the mode of operation in PyCrypto's
47 AES module, could possibly execute arbitrary code with the privileges
48 of the process or cause a Denial of Service condition.
49
50 Workaround
51 ==========
52
53 There is no known workaround at this time.
54
55 Resolution
56 ==========
57
58 All PyCrypto users should upgrade to the latest version:
59
60 # emerge --sync
61 # emerge --ask --oneshot --verbose ">=dev-python/pycrypto-2.6.1-r2"
62
63 References
64 ==========
65
66 [ 1 ] CVE-2013-7459
67 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-7459
68
69 Availability
70 ============
71
72 This GLSA and any updates to it are available for viewing at
73 the Gentoo Security Website:
74
75 https://security.gentoo.org/glsa/201702-14
76
77 Concerns?
78 =========
79
80 Security is a primary focus of Gentoo Linux and ensuring the
81 confidentiality and security of our users' machines is of utmost
82 importance to us. Any security concerns should be addressed to
83 security@g.o or alternatively, you may file a bug at
84 https://bugs.gentoo.org.
85
86 License
87 =======
88
89 Copyright 2017 Gentoo Foundation, Inc; referenced text
90 belongs to its owner(s).
91
92 The contents of this document are licensed under the
93 Creative Commons - Attribution / Share Alike license.
94
95 http://creativecommons.org/licenses/by-sa/2.5

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