USN-4480-1: OpenStack Keystone vulnerabilities

Releases

• Ubuntu 18.04 ESM

Packages

• keystone - OpenStack identity service

Details

It was discovered that OpenStack Keystone incorrectly handled EC2
credentials. An authenticated attacker with a limited scope could possibly
create EC2 credentials with escalated permissions. (CVE-2020-12689,
CVE-2020-12691)

It was discovered that OpenStack Keystone incorrectly handled the list of
roles provided with OAuth1 access tokens. An authenticated user could
possibly end up with more role assignments than intended. (CVE-2020-12690)

It was discovered that OpenStack Keystone incorrectly handled EC2 signature
TTL checks. A remote attacker could possibly use this issue to reuse
Authorization headers. (CVE-2020-12692)

Update instructions

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

Ubuntu 18.04

• keystone - 2:13.0.4-0ubuntu1
• python-keystone - 2:13.0.4-0ubuntu1

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

References

• CVE-2020-12689
• CVE-2020-12690
• CVE-2020-12691
• CVE-2020-12692