A NSS security update has been released for Ubuntu 18.04 LTS, 20.04 LTS, 21.10, and 22.04 LTS.
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Ubuntu Security Notice USN-5506-1
July 07, 2022
nss vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 22.04 LTS
- Ubuntu 21.10
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
Summary:
Several security issues were fixed in NSS.
Software Description:
- 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)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 22.04 LTS:
libnss3 2:3.68.2-0ubuntu1.1
Ubuntu 21.10:
libnss3 2:3.68-1ubuntu1.2
Ubuntu 20.04 LTS:
libnss3 2:3.49.1-1ubuntu1.8
Ubuntu 18.04 LTS:
libnss3 2:3.35-2ubuntu2.15
After a standard system update you need to restart any applications that
use NSS to make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-5506-1
CVE-2022-22747, CVE-2022-34480
Package Information:
https://launchpad.net/ubuntu/+source/nss/2:3.68.2-0ubuntu1.1
https://launchpad.net/ubuntu/+source/nss/2:3.68-1ubuntu1.2
https://launchpad.net/ubuntu/+source/nss/2:3.49.1-1ubuntu1.8
https://launchpad.net/ubuntu/+source/nss/2:3.35-2ubuntu2.15
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