Ubuntu update for nss

Published: 2022-07-07

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2022-22747 CVE-2022-34480
CWE-ID	CWE-20 CWE-824
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Ubuntu Operating systems & Components / Operating system libnss3 (Ubuntu package) Operating systems & Components / Operating system package or component
Vendor	Canonical Ltd.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU59379

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-22747

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of empty pkcs7 sequence, passed as part of the certificate data. A remote attacker can pass specially crafted certificate to the application and perform a denial of service (DoS) attack.

Mitigation

Update the affected package nss to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 22.04

libnss3 (Ubuntu package): before 2:3.68.2-0ubuntu1.1

External links

http://ubuntu.com/security/notices/USN-5506-1

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Access of Uninitialized Pointer

EUVDB-ID: #VU64764