USN-5355-1: zlib vulnerability

Published Mar 30, 2022
·
Updated

Danilo Ramos discovered that zlib incorrectly handled memory when performing certain deflating operations. An attacker could use this issue to cause zlib to crash, resulting in a denial of service, or possibly execute arbitrary code.

Affected Software

24 affected componentsFixes available
All of the following
ubuntu/lib64z1<1:1.2.11.dfsg-2ubuntu7.1
1:1.2.11.dfsg-2ubuntu7.1
Ubuntu Ubuntu=21.10
All of the following
ubuntu/libx32z1<1:1.2.11.dfsg-2ubuntu7.1
1:1.2.11.dfsg-2ubuntu7.1
Ubuntu Ubuntu=21.10
All of the following
ubuntu/lib32z1<1:1.2.11.dfsg-2ubuntu7.1
1:1.2.11.dfsg-2ubuntu7.1
Ubuntu Ubuntu=21.10
All of the following
ubuntu/zlib1g<1:1.2.11.dfsg-2ubuntu7.1
1:1.2.11.dfsg-2ubuntu7.1
Ubuntu Ubuntu=21.10
All of the following
ubuntu/lib64z1<1:1.2.11.dfsg-2ubuntu1.3
1:1.2.11.dfsg-2ubuntu1.3
Ubuntu Ubuntu=20.04
All of the following
ubuntu/libx32z1<1:1.2.11.dfsg-2ubuntu1.3
1:1.2.11.dfsg-2ubuntu1.3
Ubuntu Ubuntu=20.04
All of the following
ubuntu/lib32z1<1:1.2.11.dfsg-2ubuntu1.3
1:1.2.11.dfsg-2ubuntu1.3
Ubuntu Ubuntu=20.04
All of the following
ubuntu/zlib1g<1:1.2.11.dfsg-2ubuntu1.3
1:1.2.11.dfsg-2ubuntu1.3
Ubuntu Ubuntu=20.04
All of the following
ubuntu/lib64z1<1:1.2.11.dfsg-0ubuntu2.1
1:1.2.11.dfsg-0ubuntu2.1
Ubuntu Ubuntu=18.04
All of the following
ubuntu/libx32z1<1:1.2.11.dfsg-0ubuntu2.1
1:1.2.11.dfsg-0ubuntu2.1
Ubuntu Ubuntu=18.04
All of the following
ubuntu/lib32z1<1:1.2.11.dfsg-0ubuntu2.1
1:1.2.11.dfsg-0ubuntu2.1
Ubuntu Ubuntu=18.04
All of the following
ubuntu/zlib1g<1:1.2.11.dfsg-0ubuntu2.1
1:1.2.11.dfsg-0ubuntu2.1
Ubuntu Ubuntu=18.04

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade ubuntu/lib64z1 to a version that resolves this vulnerability.

    Fixed in 1:1.2.11.dfsg-2ubuntu7.1
  2. Upgrade

    Upgrade ubuntu/libx32z1 to a version that resolves this vulnerability.

    Fixed in 1:1.2.11.dfsg-2ubuntu7.1
  3. Upgrade

    Upgrade ubuntu/lib32z1 to a version that resolves this vulnerability.

    Fixed in 1:1.2.11.dfsg-2ubuntu7.1
  4. Upgrade

    Upgrade ubuntu/zlib1g to a version that resolves this vulnerability.

    Fixed in 1:1.2.11.dfsg-2ubuntu7.1
  5. Upgrade

    Upgrade ubuntu/lib64z1 to a version that resolves this vulnerability.

    Fixed in 1:1.2.11.dfsg-2ubuntu1.3
  6. Upgrade

    Upgrade ubuntu/libx32z1 to a version that resolves this vulnerability.

    Fixed in 1:1.2.11.dfsg-2ubuntu1.3
  7. Upgrade

    Upgrade ubuntu/lib32z1 to a version that resolves this vulnerability.

    Fixed in 1:1.2.11.dfsg-2ubuntu1.3
  8. Upgrade

    Upgrade ubuntu/zlib1g to a version that resolves this vulnerability.

    Fixed in 1:1.2.11.dfsg-2ubuntu1.3
  9. Upgrade

    Upgrade ubuntu/lib64z1 to a version that resolves this vulnerability.

    Fixed in 1:1.2.11.dfsg-0ubuntu2.1
  10. Upgrade

    Upgrade ubuntu/libx32z1 to a version that resolves this vulnerability.

    Fixed in 1:1.2.11.dfsg-0ubuntu2.1
  11. Upgrade

    Upgrade ubuntu/lib32z1 to a version that resolves this vulnerability.

    Fixed in 1:1.2.11.dfsg-0ubuntu2.1
  12. Upgrade

    Upgrade ubuntu/zlib1g to a version that resolves this vulnerability.

    Fixed in 1:1.2.11.dfsg-0ubuntu2.1

Event History

Mar 30, 2022
Advisory Published
via Ubuntu·12:00 AM

Child vulnerabilities

Contains the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of USN-5355-1?

The severity of USN-5355-1 is significant as it can lead to a denial of service or potentially allow for arbitrary code execution.

2

How do I fix USN-5355-1?

To fix USN-5355-1, update the affected packages to the recommended versions listed in the Ubuntu security notices.

3

What affected software is listed in USN-5355-1?

USN-5355-1 affects several packages including lib64z1, libx32z1, lib32z1, and zlib1g on specified versions of Ubuntu.

4

Is there a risk of exploit with USN-5355-1?

Yes, if USN-5355-1 is not addressed, there is a risk that attackers could exploit the vulnerability to crash the system or execute malicious code.

5

What should I do if I'm using an affected version described in USN-5355-1?

If using an affected version, it is crucial to apply the provided patches and upgrade your system as soon as possible.

Company

Resources

Contact

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