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Ubuntu Security Notice USN-4677-1

Ubuntu Security Notice USN-4677-1
Posted Jan 5, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4677-1 - David Cook discovered that p11-kit incorrectly handled certain memory operations. An attacker could use this issue to cause p11-kit to crash, resulting in a denial of service, or possibly execute arbitrary code.

tags | advisory, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2020-29361
MD5 | 21b501626a34f8159219ffcf33d54c15

Ubuntu Security Notice USN-4677-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-4677-1
January 05, 2021

p11-kit vulnerabilities
==========================================================================

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

- Ubuntu 20.10
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in p11-kit.

Software Description:
- p11-kit: p11-glue utilities

Details:

David Cook discovered that p11-kit incorrectly handled certain memory
operations. An attacker could use this issue to cause p11-kit to crash,
resulting in a denial of service, or possibly execute arbitrary code.

Update instructions:

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

Ubuntu 20.10:
libp11-kit0 0.23.21-2ubuntu0.1
p11-kit 0.23.21-2ubuntu0.1
p11-kit-modules 0.23.21-2ubuntu0.1

Ubuntu 20.04 LTS:
libp11-kit0 0.23.20-1ubuntu0.1
p11-kit 0.23.20-1ubuntu0.1
p11-kit-modules 0.23.20-1ubuntu0.1

Ubuntu 18.04 LTS:
libp11-kit0 0.23.9-2ubuntu0.1
p11-kit 0.23.9-2ubuntu0.1
p11-kit-modules 0.23.9-2ubuntu0.1

Ubuntu 16.04 LTS:
libp11-kit0 0.23.2-5~ubuntu16.04.2
p11-kit 0.23.2-5~ubuntu16.04.2
p11-kit-modules 0.23.2-5~ubuntu16.04.2

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

References:
https://usn.ubuntu.com/4677-1
CVE-2020-29361, CVE-2020-29362, CVE-2020-29363

Package Information:
https://launchpad.net/ubuntu/+source/p11-kit/0.23.21-2ubuntu0.1
https://launchpad.net/ubuntu/+source/p11-kit/0.23.20-1ubuntu0.1
https://launchpad.net/ubuntu/+source/p11-kit/0.23.9-2ubuntu0.1
https://launchpad.net/ubuntu/+source/p11-kit/0.23.2-5~ubuntu16.04.2
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