Twenty Year Anniversary

Ubuntu Security Notice USN-3840-1

Ubuntu Security Notice USN-3840-1
Posted Dec 7, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3840-1 - Samuel Weiser discovered that OpenSSL incorrectly handled DSA signing. An attacker could possibly use this issue to perform a timing side-channel attack and recover private DSA keys. Samuel Weiser discovered that OpenSSL incorrectly handled ECDSA signing. An attacker could possibly use this issue to perform a timing side-channel attack and recover private ECDSA keys. This issue only affected Ubuntu 18.04 LTS and Ubuntu 18.10. Various other issues were also addressed.

tags | advisory
systems | linux, ubuntu
advisories | CVE-2018-0734, CVE-2018-0735, CVE-2018-5407
MD5 | 5994d027f01038463cf5bc485763f923

Ubuntu Security Notice USN-3840-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-3840-1
December 06, 2018

openssl, openssl1.0 vulnerabilities
==========================================================================

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

- Ubuntu 18.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in OpenSSL.

Software Description:
- openssl: Secure Socket Layer (SSL) cryptographic library and tools
- openssl1.0: Secure Socket Layer (SSL) cryptographic library and tools

Details:

Samuel Weiser discovered that OpenSSL incorrectly handled DSA signing. An
attacker could possibly use this issue to perform a timing side-channel
attack and recover private DSA keys. (CVE-2018-0734)

Samuel Weiser discovered that OpenSSL incorrectly handled ECDSA signing. An
attacker could possibly use this issue to perform a timing side-channel
attack and recover private ECDSA keys. This issue only affected Ubuntu
18.04 LTS and Ubuntu 18.10. (CVE-2018-0735)

Billy Bob Brumley, Cesar Pereida Garcia, Sohaib ul Hassan, Nicola Tuveri,
and Alejandro Cabrera Aldaya discovered that Simultaneous Multithreading
(SMT) architectures are vulnerable to side-channel leakage. This issue is
known as "PortSmash". An attacker could possibly use this issue to perform
a timing side-channel attack and recover private keys. (CVE-2018-5407)

Update instructions:

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

Ubuntu 18.10:
libssl1.0.0 1.0.2n-1ubuntu6.1
libssl1.1 1.1.1-1ubuntu2.1

Ubuntu 18.04 LTS:
libssl1.0.0 1.0.2n-1ubuntu5.2
libssl1.1 1.1.0g-2ubuntu4.3

Ubuntu 16.04 LTS:
libssl1.0.0 1.0.2g-1ubuntu4.14

Ubuntu 14.04 LTS:
libssl1.0.0 1.0.1f-1ubuntu2.27

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

References:
https://usn.ubuntu.com/usn/usn-3840-1
CVE-2018-0734, CVE-2018-0735, CVE-2018-5407

Package Information:
https://launchpad.net/ubuntu/+source/openssl/1.1.1-1ubuntu2.1
https://launchpad.net/ubuntu/+source/openssl1.0/1.0.2n-1ubuntu6.1
https://launchpad.net/ubuntu/+source/openssl/1.1.0g-2ubuntu4.3
https://launchpad.net/ubuntu/+source/openssl1.0/1.0.2n-1ubuntu5.2
https://launchpad.net/ubuntu/+source/openssl/1.0.2g-1ubuntu4.14
https://launchpad.net/ubuntu/+source/openssl/1.0.1f-1ubuntu2.27

Comments

RSS Feed Subscribe to this comment feed

No comments yet, be the first!

Login or Register to post a comment

File Archive:

December 2018

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Dec 1st
    11 Files
  • 2
    Dec 2nd
    1 Files
  • 3
    Dec 3rd
    18 Files
  • 4
    Dec 4th
    40 Files
  • 5
    Dec 5th
    16 Files
  • 6
    Dec 6th
    50 Files
  • 7
    Dec 7th
    12 Files
  • 8
    Dec 8th
    1 Files
  • 9
    Dec 9th
    1 Files
  • 10
    Dec 10th
    15 Files
  • 11
    Dec 11th
    30 Files
  • 12
    Dec 12th
    25 Files
  • 13
    Dec 13th
    15 Files
  • 14
    Dec 14th
    14 Files
  • 15
    Dec 15th
    2 Files
  • 16
    Dec 16th
    3 Files
  • 17
    Dec 17th
    15 Files
  • 18
    Dec 18th
    15 Files
  • 19
    Dec 19th
    2 Files
  • 20
    Dec 20th
    0 Files
  • 21
    Dec 21st
    0 Files
  • 22
    Dec 22nd
    0 Files
  • 23
    Dec 23rd
    0 Files
  • 24
    Dec 24th
    0 Files
  • 25
    Dec 25th
    0 Files
  • 26
    Dec 26th
    0 Files
  • 27
    Dec 27th
    0 Files
  • 28
    Dec 28th
    0 Files
  • 29
    Dec 29th
    0 Files
  • 30
    Dec 30th
    0 Files
  • 31
    Dec 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2018 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close