SUSE update for the Linux Kernel (Live Patch 21 for SLE 12 SP5)

1) Cryptographic Issues

EUVDB-ID: #VU109316

Risk: Medium

CVSSv4.0: 2.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:H/SI:L/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-3702

CWE-ID: CWE-310 - Cryptographic Issues

Exploit availability: No

Description

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

The vulnerability exists due to improper input validation in WIFI driver(Krook). A remote attacker can temporary disable WPA2 or the WPA/WPA2 mixed-mode encryption and intercept traffic in clear text.

Mitigation

Update the affected package the Linux Kernel (Live Patch 21 for SLE 12 SP5) to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Live Patching: 12-SP5

kgraft-patch-4_12_14-122_83-default: before 6-2.2

kgraft-patch-4_12_14-122_80-default: before 7-2.2

kgraft-patch-4_12_14-122_74-default: before 8-2.2

kgraft-patch-4_12_14-122_71-default: before 10-2.2

kgraft-patch-4_12_14-122_66-default: before 11-2.2

CPE2.3

• cpe:2.3:o:suse:suse_linux_enterprise_live_patching:12-SP5:*:*:*:*:*:*:*
• cpe:2.3:a:suse:kgraft-patch-4_12_14-122_83-default:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kgraft-patch-4_12_14-122_80-default:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kgraft-patch-4_12_14-122_74-default:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kgraft-patch-4_12_14-122_71-default:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kgraft-patch-4_12_14-122_66-default:*:*:*:*:*:suse_linux:*:*

External links

https://www.suse.com/support/update/announcement/2022/suse-su-20220267-1/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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

2) Buffer overflow

EUVDB-ID: #VU59474

Risk: Low

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-42739

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary within the firewire subsystem in the Linux kernel in drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c files. A local privileged user can run a specially crafted program tat calls avc_ca_pmt() function to trigger memory corruption and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package the Linux Kernel (Live Patch 21 for SLE 12 SP5) to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Live Patching: 12-SP5

kgraft-patch-4_12_14-122_83-default: before 6-2.2

kgraft-patch-4_12_14-122_80-default: before 7-2.2

kgraft-patch-4_12_14-122_74-default: before 8-2.2

kgraft-patch-4_12_14-122_71-default: before 10-2.2

kgraft-patch-4_12_14-122_66-default: before 11-2.2

CPE2.3

• cpe:2.3:o:suse:suse_linux_enterprise_live_patching:12-SP5:*:*:*:*:*:*:*
• cpe:2.3:a:suse:kgraft-patch-4_12_14-122_83-default:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kgraft-patch-4_12_14-122_80-default:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kgraft-patch-4_12_14-122_74-default:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kgraft-patch-4_12_14-122_71-default:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:kgraft-patch-4_12_14-122_66-default:*:*:*:*:*:suse_linux:*:*

External links

https://www.suse.com/support/update/announcement/2022/suse-su-20220267-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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