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Ubuntu Security Notice USN-5257-1
January 31, 2022
ldns vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.04 LTS
- Ubuntu 16.04 ESM
Summary:
ldns could be made to expose sensitive information if it received
a specially crafted input.
Software Description:
- ldns: ldns library for DNS programming
Details:
It was discovered that ldns incorrectly handled certain inputs.
An attacker could possibly use this issue to expose sensitive information.
(CVE-2020-19860, CVE-2020-19861)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 18.04 LTS:
libldns2 1.7.0-3ubuntu4.1
Ubuntu 16.04 ESM:
libldns1 1.6.17-8ubuntu0.1+esm1
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-5257-1
CVE-2020-19860, CVE-2020-19861
Package Information:
https://launchpad.net/ubuntu/+source/ldns/1.7.0-3ubuntu4.1
