- Vulnerability/
- USN-3692-2
USN-3692-2: OpenSSL vulnerabilities
First published: Tue Jun 26 2018(Updated: )
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)
| Affected Software | Affected Version | How to fix |
|---|---|---|
| All of | ||
| ubuntu/libssl1.0.0 | <1.0.1-4ubuntu5.43 | 1.0.1-4ubuntu5.43 |
| Ubuntu OpenSSH Client | =12.04 |
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Reference Links
- https://ubuntu.com/security/CVE-2018-0495
- https://ubuntu.com/security/CVE-2018-0732
- https://ubuntu.com/security/CVE-2018-0737
- https://ubuntu.com/security/notices/USN-3692-1
- https://ubuntu.com/security/notices/USN-3689-2
- https://ubuntu.com/security/notices/USN-3689-1
- https://ubuntu.com/security/notices/USN-3850-1
- https://ubuntu.com/security/notices/USN-3850-2
- https://ubuntu.com/security/notices/USN-3628-1
- https://ubuntu.com/security/notices/USN-3628-2
- https://launchpad.net/ubuntu/+source/openssl/1.0.1-4ubuntu5.43
- https://ubuntu.com/security/notices/USN-3692-2 (Advisory)
Child vulnerabilities
(Contains the following vulnerabilities)
Frequently Asked Questions
What is the vulnerability ID for this advisory?
The vulnerability ID for this advisory is USN-3692-2.
What software is affected by this vulnerability?
The libssl1.0.0 package on Ubuntu 12.04 ESM is affected by this vulnerability.
What is the severity of this vulnerability?
The severity of this vulnerability is not specified in the provided information.
How can I fix this vulnerability?
To fix this vulnerability, update the libssl1.0.0 package to version 1.0.1-4ubuntu5.43.
Where can I find more information about this vulnerability?
You can find more information about this vulnerability in the advisory references: CVE-2018-0495, CVE-2018-0732, and CVE-2018-0737.
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