drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Mehrere Probleme in OpenVPN
Name: |
Mehrere Probleme in OpenVPN |
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ID: |
USN-3339-1 |
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Distribution: |
Ubuntu |
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Plattformen: |
Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 16.10, Ubuntu 17.04 |
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Datum: |
Fr, 23. Juni 2017, 06:38 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6329
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7479
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7512
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7508
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7521
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7520 |
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Applikationen: |
OpenVPN |
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Originalnachricht |
This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --===============7075291541800693245== Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="gDEIwvense1MLNFcQAogh6Um42VeOvnbs"
This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --gDEIwvense1MLNFcQAogh6Um42VeOvnbs Content-Type: multipart/mixed; boundary="HOGl1vwn18u8IW1HVtFsEb9UvS6tuTbG0"; protected-headers="v1" From: Marc Deslauriers <marc.deslauriers@canonical.com> Reply-To: Ubuntu Security <security@ubuntu.com> To: "ubuntu-security-announce@lists.ubuntu.com" <ubuntu-security-announce@lists.ubuntu.com> Message-ID: <255cfa89-aece-6dae-7131-e086d3174af2@canonical.com> Subject: [USN-3339-1] OpenVPN vulnerabilities
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========================================================================== Ubuntu Security Notice USN-3339-1 June 22, 2017
openvpn vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 17.04 - Ubuntu 16.10 - Ubuntu 16.04 LTS - Ubuntu 14.04 LTS
Summary:
Several security issues were fixed in OpenVPN.
Software Description: - openvpn: virtual private network software
Details:
Karthikeyan Bhargavan and Gaëtan Leurent discovered that 64-bit block ciphers are vulnerable to a birthday attack. A remote attacker could possibly use this issue to recover cleartext data. Fixing this issue requires a configuration change to switch to a different cipher. This update adds a warning to the log file when a 64-bit block cipher is in use. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-6329)
It was discovered that OpenVPN incorrectly handled rollover of packet ids. An authenticated remote attacker could use this issue to cause OpenVPN to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2017-7479)
Guido Vranken discovered that OpenVPN incorrectly handled certain malformed IPv6 packets. A remote attacker could use this issue to cause OpenVPN to crash, resulting in a denial of service. (CVE-2017-7508)
Guido Vranken discovered that OpenVPN incorrectly handled memory. A remote attacker could use this issue to cause OpenVPN to crash, resulting in a denial of service. (CVE-2017-7512)
Guido Vranken discovered that OpenVPN incorrectly handled an HTTP proxy with NTLM authentication. A remote attacker could use this issue to cause OpenVPN clients to crash, resulting in a denial of service, or possibly expose sensitive memory contents. (CVE-2017-7520)
Guido Vranken discovered that OpenVPN incorrectly handled certain x509 extensions. A remote attacker could use this issue to cause OpenVPN to crash, resulting in a denial of service. (CVE-2017-7521)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 17.04: openvpn 2.4.0-4ubuntu1.3
Ubuntu 16.10: openvpn 2.3.11-1ubuntu2.1
Ubuntu 16.04 LTS: openvpn 2.3.10-1ubuntu2.1
Ubuntu 14.04 LTS: openvpn 2.3.2-7ubuntu3.2
In general, a standard system update will make all the necessary changes.
References: https://www.ubuntu.com/usn/usn-3339-1 CVE-2016-6329, CVE-2017-7479, CVE-2017-7508, CVE-2017-7512, CVE-2017-7520, CVE-2017-7521
Package Information: https://launchpad.net/ubuntu/+source/openvpn/2.4.0-4ubuntu1.3 https://launchpad.net/ubuntu/+source/openvpn/2.3.11-1ubuntu2.1 https://launchpad.net/ubuntu/+source/openvpn/2.3.10-1ubuntu2.1 https://launchpad.net/ubuntu/+source/openvpn/2.3.2-7ubuntu3.2
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