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Debian Security Advisory DSA 3673-1 (openssl - security update)

Information

Severity

Severity

High

Family

Family

Debian Local Security Checks

CVSSv2 Base

CVSSv2 Base

7.8

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Solution Type

Solution Type

Vendor Patch

Created

Created

5 years ago

Modified

Modified

7 months ago

Share

Summary

Several vulnerabilities were discovered in OpenSSL: CVE-2016-2177 Guido Vranken discovered that OpenSSL uses undefined pointer arithmetic. CVE-2016-2178 Cesar Pereida, Billy Brumley and Yuval Yarom discovered a timing leak in the DSA code. CVE-2016-2179 / CVE-2016-2181 Quan Luo and the OCAP audit team discovered denial of service vulnerabilities in DTLS. CVE-2016-2180 / CVE-2016-2182 / CVE-2016-6303 Shi Lei discovered an out-of-bounds memory read in TS_OBJ_print_bio() and an out-of-bounds write in BN_bn2dec() and MDC2_Update(). CVE-2016-2183 DES-based cipher suites are demoted from the HIGH group to MEDIUM as a mitigation for the SWEET32 attack. CVE-2016-6302 Shi Lei discovered that the use of SHA512 in TLS session tickets is susceptible to denial of service. CVE-2016-6304 Shi Lei discovered that excessively large OCSP status request may result in denial of service via memory exhaustion. CVE-2016-6306 Shi Lei discovered that missing message length validation when parsing certificates may potentially result in denial of service.

Affected Software

Affected Software

openssl on Debian Linux

Detection Method

Detection Method

This check tests the installed software version using the apt package manager.

Solution

Solution

For the stable distribution (jessie), these problems have been fixed in version 1.0.1t-1+deb8u4. For the unstable distribution (sid), these problems will be fixed soon. We recommend that you upgrade your openssl packages.

Common Vulnerabilities and Exposures (CVE)

References

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1. Download Multipass

sudo snap install multipass

2. Launch a multipass instance

multipass launch -c 2 -m 6G -d 20G -n mageni 20.04 && multipass shell mageni

3. Install Mageni

curl -sL https://www.mageni.net/installation | sudo bash

1. If you don’t have it already, install Brew. Then, to install Multipass simply execute:

brew install --cask multipass

2. Launch a multipass instance

multipass launch -c 2 -m 6G -d 20G -n mageni 20.04 && multipass shell mageni

2. Install Mageni

curl -sL https://www.mageni.net/installation | sudo bash

1. Download the installer for Windows

Note: You need Windows 10 Pro/Enterprise/Education v 1803 or later, or any Windows 10 with VirtualBox

2. Ensure your network is private

Make sure your local network is designated as private, otherwise Windows prevents Multipass from starting.

3. Run the installer

You need to allow the installer to gain Administrator privileges.

4. Launch a multipass instance

multipass launch -c 2 -m 6G -d 20G -n mageni 20.04

5. Log into the multipass instance

multipass shell mageni

6. Install Mageni

curl -sL https://www.mageni.net/installation | sudo bash