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Sicherheit: Mehrere Probleme in OpenSSL (Aktualisierung)
Aktuelle Meldungen Distributionen
Name: Mehrere Probleme in OpenSSL (Aktualisierung)
ID: USN-3692-2
Distribution: Ubuntu
Plattformen: Ubuntu 12.04 ESM
Datum: Di, 26. Juni 2018, 17:29
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-0737
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-0495
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-0732
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0737
Applikationen: OpenSSL
Update von: Mehrere Probleme in OpenSSL

Originalnachricht


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==========================================================================
Ubuntu Security Notice USN-3692-2
June 26, 2018

openssl vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 12.04 ESM

Summary:

Several security issues were fixed in OpenSSL.

Software Description:
- openssl: Secure Socket Layer (SSL) cryptographic library and tools

Details:

USN-3692-1 fixed a vulnerability in OpenSSL. This update provides
the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

Keegan Ryan discovered that OpenSSL incorrectly handled ECDSA key
generation. An attacker could possibly use this issue to perform a
cache-timing attack and recover private ECDSA keys. (CVE-2018-0495)

Guido Vranken discovered that OpenSSL incorrectly handled very large
prime values during a key agreement. A remote attacker could possibly
use this issue to consume resources, leading to a denial of service.
(CVE-2018-0732)

Alejandro Cabrera Aldaya, Billy Brumley, Cesar Pereida Garcia and Luis
Manuel Alvarez Tapia discovered that OpenSSL incorrectly handled RSA
key generation. An attacker could possibly use this issue to perform a
cache-timing attack and recover private RSA keys. (CVE-2018-0737)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 12.04 ESM:
libssl1.0.0 1.0.1-4ubuntu5.43

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
https://usn.ubuntu.com/usn/usn-3692-2
https://usn.ubuntu.com/usn/usn-3692-1
CVE-2017-0737, CVE-2018-0495, CVE-2018-0732, CVE-2018-0737
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