- Vulnerability/
- USN-4263-1
USN-4263-1: Sudo vulnerability
First published: Mon Feb 03 2020(Updated: )
Joe Vennix discovered that Sudo incorrectly handled memory operations when the pwfeedback option is enabled. A local attacker could possibly use this issue to obtain unintended access to the administrator account.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| All of | ||
| ubuntu/sudo | <1.8.27-1ubuntu4.1 | 1.8.27-1ubuntu4.1 |
| Ubuntu Linux | =19.10 | |
| All of | ||
| ubuntu/sudo-ldap | <1.8.27-1ubuntu4.1 | 1.8.27-1ubuntu4.1 |
| Ubuntu Linux | =19.10 | |
| All of | ||
| ubuntu/sudo | <1.8.21p2-3ubuntu1.2 | 1.8.21p2-3ubuntu1.2 |
| Ubuntu Linux | =18.04 | |
| All of | ||
| ubuntu/sudo-ldap | <1.8.21p2-3ubuntu1.2 | 1.8.21p2-3ubuntu1.2 |
| Ubuntu Linux | =18.04 | |
| All of | ||
| ubuntu/sudo | <1.8.16-0ubuntu1.9 | 1.8.16-0ubuntu1.9 |
| Ubuntu Linux | =16.04 | |
| All of | ||
| ubuntu/sudo-ldap | <1.8.16-0ubuntu1.9 | 1.8.16-0ubuntu1.9 |
| Ubuntu Linux | =16.04 |
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Reference Links
- https://ubuntu.com/security/CVE-2019-18634
- https://ubuntu.com/security/notices/USN-4263-2
- https://launchpad.net/ubuntu/+source/sudo/1.8.27-1ubuntu4.1
- https://launchpad.net/ubuntu/+source/sudo/1.8.21p2-3ubuntu1.2
- https://launchpad.net/ubuntu/+source/sudo/1.8.16-0ubuntu1.9
- https://ubuntu.com/security/notices/USN-4263-1 (Advisory)
Frequently Asked Questions
What is the severity of USN-4263-1?
The severity of USN-4263-1 is critical due to potential unauthorized access to administrator accounts.
How do I fix USN-4263-1?
To fix USN-4263-1, upgrade the sudo or sudo-ldap package to the recommended version for your Ubuntu release.
Which versions of Ubuntu are affected by USN-4263-1?
USN-4263-1 affects Ubuntu 19.10, 18.04, and 16.04 with specific vulnerable versions of sudo and sudo-ldap.
What is the CVE associated with USN-4263-1?
The CVE associated with USN-4263-1 is CVE-2019-18634.
Who discovered the vulnerability leading to USN-4263-1?
The vulnerability leading to USN-4263-1 was discovered by Joe Vennix.
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