| 1 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 2 |
Gentoo Linux Security Advisory GLSA 200912-01 |
| 3 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 4 |
http://security.gentoo.org/ |
| 5 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 6 |
|
| 7 |
Severity: Normal |
| 8 |
Title: OpenSSL: Multiple vulnerabilities |
| 9 |
Date: December 01, 2009 |
| 10 |
Bugs: #270305, #280591, #292022 |
| 11 |
ID: 200912-01 |
| 12 |
|
| 13 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 14 |
|
| 15 |
Synopsis |
| 16 |
======== |
| 17 |
|
| 18 |
Multiple vulnerabilities in OpenSSL might allow remote attackers to |
| 19 |
conduct multiple attacks, including the injection of arbitrary data |
| 20 |
into encrypted byte streams. |
| 21 |
|
| 22 |
Background |
| 23 |
========== |
| 24 |
|
| 25 |
OpenSSL is an Open Source toolkit implementing the Secure Sockets Layer |
| 26 |
(SSL v2/v3) and Transport Layer Security (TLS v1) as well as a general |
| 27 |
purpose cryptography library. |
| 28 |
|
| 29 |
Affected packages |
| 30 |
================= |
| 31 |
|
| 32 |
------------------------------------------------------------------- |
| 33 |
Package / Vulnerable / Unaffected |
| 34 |
------------------------------------------------------------------- |
| 35 |
1 dev-libs/openssl < 0.9.8l-r2 >= 0.9.8l-r2 |
| 36 |
|
| 37 |
Description |
| 38 |
=========== |
| 39 |
|
| 40 |
Multiple vulnerabilities have been reported in OpenSSL: |
| 41 |
|
| 42 |
* Marsh Ray of PhoneFactor and Martin Rex of SAP independently |
| 43 |
reported that the TLS protocol does not properly handle session |
| 44 |
renegotiation requests (CVE-2009-3555). |
| 45 |
|
| 46 |
* The MD2 hash algorithm is no longer considered to be |
| 47 |
cryptographically strong, as demonstrated by Dan Kaminsky. |
| 48 |
Certificates using this algorithm are no longer accepted |
| 49 |
(CVE-2009-2409). |
| 50 |
|
| 51 |
* Daniel Mentz and Robin Seggelmann reported the following |
| 52 |
vulnerabilities related to DTLS: A use-after-free flaw |
| 53 |
(CVE-2009-1379) and a NULL pointer dereference (CVE-2009-1387) in the |
| 54 |
dtls1_retrieve_buffered_fragment() function in src/d1_both.c, |
| 55 |
multiple memory leaks in the dtls1_process_out_of_seq_message() |
| 56 |
function in src/d1_both.c (CVE-2009-1378), and a processing error |
| 57 |
related to a large amount of DTLS records with a future epoch in the |
| 58 |
dtls1_buffer_record() function in ssl/d1_pkt.c (CVE-2009-1377). |
| 59 |
|
| 60 |
Impact |
| 61 |
====== |
| 62 |
|
| 63 |
A remote unauthenticated attacker, acting as a Man in the Middle, could |
| 64 |
inject arbitrary plain text into a TLS session, possibly leading to the |
| 65 |
ability to send requests as if authenticated as the victim. A remote |
| 66 |
attacker could furthermore send specially crafted DTLS packages to a |
| 67 |
service using OpenSSL for DTLS support, possibly resulting in a Denial |
| 68 |
of Service. Also, a remote attacker might be able to create rouge |
| 69 |
certificates, facilitated by a MD2 collision. NOTE: The amount of |
| 70 |
computation needed for this attack is still very large. |
| 71 |
|
| 72 |
Workaround |
| 73 |
========== |
| 74 |
|
| 75 |
There is no known workaround at this time. |
| 76 |
|
| 77 |
Resolution |
| 78 |
========== |
| 79 |
|
| 80 |
All OpenSSL users should upgrade to the latest version: |
| 81 |
|
| 82 |
# emerge --sync |
| 83 |
# emerge --ask --oneshot --verbose ">=dev-libs/openssl-0.9.8l-r2" |
| 84 |
|
| 85 |
References |
| 86 |
========== |
| 87 |
|
| 88 |
[ 1 ] CVE-2009-1377 |
| 89 |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1377 |
| 90 |
[ 2 ] CVE-2009-1378 |
| 91 |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1378 |
| 92 |
[ 3 ] CVE-2009-1379 |
| 93 |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1379 |
| 94 |
[ 4 ] CVE-2009-1387 |
| 95 |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1387 |
| 96 |
[ 5 ] CVE-2009-2409 |
| 97 |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2409 |
| 98 |
[ 6 ] CVE-2009-3555 |
| 99 |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3555 |
| 100 |
|
| 101 |
Availability |
| 102 |
============ |
| 103 |
|
| 104 |
This GLSA and any updates to it are available for viewing at |
| 105 |
the Gentoo Security Website: |
| 106 |
|
| 107 |
http://security.gentoo.org/glsa/glsa-200912-01.xml |
| 108 |
|
| 109 |
Concerns? |
| 110 |
========= |
| 111 |
|
| 112 |
Security is a primary focus of Gentoo Linux and ensuring the |
| 113 |
confidentiality and security of our users machines is of utmost |
| 114 |
importance to us. Any security concerns should be addressed to |
| 115 |
security@g.o or alternatively, you may file a bug at |
| 116 |
https://bugs.gentoo.org. |
| 117 |
|
| 118 |
License |
| 119 |
======= |
| 120 |
|
| 121 |
Copyright 2009 Gentoo Foundation, Inc; referenced text |
| 122 |
belongs to its owner(s). |
| 123 |
|
| 124 |
The contents of this document are licensed under the |
| 125 |
Creative Commons - Attribution / Share Alike license. |
| 126 |
|
| 127 |
http://creativecommons.org/licenses/by-sa/2.5 |
Archives