Debian DSA-2950-1 : openssl - security update

High Nessus Plugin ID 74337

Synopsis

The remote Debian host is missing a security-related update.

Description

Multiple vulnerabilities have been discovered in OpenSSL :

- CVE-2014-0195 Jueri Aedla discovered that a buffer overflow in processing DTLS fragments could lead to the execution of arbitrary code or denial of service.

- CVE-2014-0221 Imre Rad discovered the processing of DTLS hello packets is susceptible to denial of service.

- CVE-2014-0224 KIKUCHI Masashi discovered that carefully crafted handshakes can force the use of weak keys, resulting in potential man-in-the-middle attacks.

- CVE-2014-3470 Felix Groebert and Ivan Fratric discovered that the implementation of anonymous ECDH ciphersuites is suspectible to denial of service.

Additional information can be found at http://www.openssl.org/news/secadv/20140605.txt

Solution

Upgrade the openssl packages.

For the stable distribution (wheezy), these problems have been fixed in version 1.0.1e-2+deb7u10. All applications linked to openssl need to be restarted. You can use the tool checkrestart from the package debian-goodies to detect affected programs or reboot your system.
There's also a forthcoming security update for the Linux kernel later the day (CVE-2014-3153 ), so you need to reboot anyway. Perfect timing, isn't it?

See Also

https://security-tracker.debian.org/tracker/CVE-2014-0195

https://security-tracker.debian.org/tracker/CVE-2014-0221

https://security-tracker.debian.org/tracker/CVE-2014-0224

https://security-tracker.debian.org/tracker/CVE-2014-3470

https://www.openssl.org/news/secadv/20140605.txt

https://security-tracker.debian.org/tracker/CVE-2014-3153

https://packages.debian.org/source/wheezy/openssl

https://www.debian.org/security/2014/dsa-2950

Plugin Details

Severity: High

ID: 74337

File Name: debian_DSA-2950.nasl

Version: 1.21

Type: local

Agent: unix

Published: 2014/06/06

Updated: 2018/11/19

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 9.3

Temporal Score: 7.7

Vector: CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C

Temporal Vector: CVSS2#E:F/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:openssl, cpe:/o:debian:debian_linux:7.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2014/06/05

Exploitable With

Core Impact

Reference Information

CVE: CVE-2014-0195, CVE-2014-0221, CVE-2014-0224, CVE-2014-3470

BID: 67898, 67899, 67900, 67901

DSA: 2950