1. Ubuntu Security Notices
  2. USN-5506-1

USN-5506-1: NSS vulnerabilities

Publication date

7 July 2022

Overview

Several security issues were fixed in NSS.

Releases

Packages

  • nss - Network Security Service library

Details

Tavis Ormandy discovered that NSS incorrectly handled an empty pkcs7
sequence. A remote attacker could possibly use this issue to cause NSS to
crash, resulting in a denial of service. This issue only affected Ubuntu
18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 21.10. (CVE-2022-22747)

Ronald Crane discovered that NSS incorrectly handled certain memory
operations. A remote attacker could use this issue to cause NSS to crash,
resulting in a denial of service, or possibly execute arbitrary code.
(CVE-2022-34480)

Tavis Ormandy discovered that NSS incorrectly handled an empty pkcs7
sequence. A remote attacker could possibly use this issue to cause NSS to
crash, resulting in a denial of service. This issue only affected Ubuntu
18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 21.10. (CVE-2022-22747)

Ronald Crane discovered that NSS incorrectly handled certain memory
operations. A remote attacker could use this issue to cause NSS to crash,
resulting in a denial of service, or possibly execute arbitrary code.
(CVE-2022-34480)

Update instructions

After a standard system update you need to restart any applications that use NSS to make all the necessary changes.

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
22.04 jammy libnss3 –  2:3.68.2-0ubuntu1.1
21.10 impish libnss3 –  2:3.68-1ubuntu1.2
20.04 focal libnss3 –  2:3.49.1-1ubuntu1.8
18.04 bionic libnss3 –  2:3.35-2ubuntu2.15

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References

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