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Ubuntu Security Notice USN-5872-1

Ubuntu Security Notice USN-5872-1
Posted Feb 15, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5872-1 - 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. 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.

tags | advisory, remote, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2022-22747, CVE-2022-34480
SHA-256 | de3eb59d3c62619fa7c1f1b9d8e86595187b3ae424b2453806af525f6ce5427e

Ubuntu Security Notice USN-5872-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-5872-1
February 15, 2023

nss vulnerabilities
==========================================================================

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

- Ubuntu 16.04 ESM
- Ubuntu 14.04 ESM

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. (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 16.04 ESM:
libnss3 2:3.28.4-0ubuntu0.16.04.14+esm3

Ubuntu 14.04 ESM:
libnss3 2:3.28.4-0ubuntu0.14.04.5+esm11

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-5872-1
<https://ubuntu.com/security/notices/USN-5872-1>
CVE-2022-22747, CVE-2022-34480
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