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==========================================================================
Ubuntu Security Notice USN-5628-1
September 22, 2022

etcd vulnerabilities
==========================================================================

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

- Ubuntu 20.04 LTS

Summary:

Several security issues were fixed in etcd.

Software Description:
- etcd: Transitional package for etcd-client and etcd-server

Details:

It was discovered that etcd incorrectly handled certain specially crafted
WAL files. An attacker could possibly use this issue to cause a denial of
service. (CVE-2020-15106, CVE-2020-15112)

It was discovered that etcd incorrectly handled directory permissions when
trying to create a directory that exists already. An attacker could
possibly use this issue to obtain sensitive information. (CVE-2020-15113)

It was discovered that etcd incorrectly handled endpoint setup. An
attacker could possibly use this issue to cause a denial of
service. (CVE-2020-15114)

Update instructions:

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

Ubuntu 20.04 LTS:
  etcd                            3.2.26+dfsg-6ubuntu0.1
  etcd-client                     3.2.26+dfsg-6ubuntu0.1
  etcd-server                     3.2.26+dfsg-6ubuntu0.1

In general, a standard system update will make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-5628-1
  CVE-2020-15106, CVE-2020-15112, CVE-2020-15113, CVE-2020-15114

Package Information:
  https://launchpad.net/ubuntu/+source/etcd/3.2.26+dfsg-6ubuntu0.1

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