SUSE update for the Linux Kernel (Live Patch 37 for SLE 12 SP3)

1) Use of insufficiently random values

EUVDB-ID: #VU63839

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-20322

CWE-ID: CWE-330 - Use of Insufficiently Random Values

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to an error when processing received ICMP errors. A remote attacker can effectively bypass the source port UDP randomization to gain access to sensitive information.

Mitigation

Update the affected package the Linux Kernel (Live Patch 37 for SLE 12 SP3) to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server for SAP: 12-SP3

SUSE Linux Enterprise Server: 12-SP3-LTSS

kgraft-patch-4_4_180-94_147-default-debuginfo: before 6-2.1

kgraft-patch-4_4_180-94_147-default: before 6-2.1

kgraft-patch-4_4_180-94_144-default-debuginfo: before 9-2.1

kgraft-patch-4_4_180-94_144-default: before 9-2.1

kgraft-patch-4_4_180-94_141-default-debuginfo: before 12-2.2

kgraft-patch-4_4_180-94_141-default: before 12-2.2

kgraft-patch-4_4_180-94_138-default-debuginfo: before 13-2.2

kgraft-patch-4_4_180-94_138-default: before 13-2.2

CPE2.3

• cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap:12-SP3:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server:12-SP3-LTSS:*:*:*:*:*:*:*
• cpe:2.3:a:suse:kgraft-patch-4_4_180-94_147-default-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kgraft-patch-4_4_180-94_147-default:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kgraft-patch-4_4_180-94_144-default-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kgraft-patch-4_4_180-94_144-default:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kgraft-patch-4_4_180-94_141-default-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kgraft-patch-4_4_180-94_141-default:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kgraft-patch-4_4_180-94_138-default-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kgraft-patch-4_4_180-94_138-default:*:*:*:*:*:suse_linux:*:*

External links

https://www.suse.com/support/update/announcement/2021/suse-su-20214057-1/

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.