Debian DSA-2950-1 : openssl - security update

High Nessus Plugin ID 74337

New! Vulnerability Priority Rating (VPR)

Tenable calculates a dynamic VPR for every vulnerability. VPR combines vulnerability information with threat intelligence and machine learning algorithms to predict which vulnerabilities are most likely to be exploited in attacks. Read more about what VPR is and how it's different from CVSS.

VPR Score: 8.5

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: 1.23

Type: local

Agent: unix

Published: 2014/06/06

Updated: 2020/03/12

Dependencies: 12634

Risk Information

Risk Factor: High

VPR Score: 8.5

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

CVSS v3.0

Base Score: 7.4

Temporal Score: 6.9

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Temporal Vector: CVSS:3.0/E:F/RL:O/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

Vulnerability 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