SUSE update for libnettle

1) Input validation error

EUVDB-ID: #VU53978

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-3580

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 in nettle's RSA decryption functions due to insufficient validation of certain ciphertexts. A remote attacker can send specially crafted  data to the server and perform a denial of service (DoS) attack.

Mitigation

Update the affected package libnettle to the latest version.

Vulnerable software versions

SUSE Manager Proxy: 4.0

SUSE Manager Retail Branch Server: 4.0

SUSE Manager Server: 4.0

SUSE Linux Enterprise Server for SAP: 15-SP1 - 15

SUSE Linux Enterprise High Performance Computing: 15-LTSS - 15-SP1-ESPOS

SUSE Enterprise Storage: 6

SUSE CaaS Platform: 4.0

SUSE MicroOS: 5.0

SUSE Linux Enterprise Server: 15-LTSS - 15-SP1-LTSS

SUSE Linux Enterprise Module for Basesystem: 15-SP2 - 15-SP3

libnettle6-32bit-debuginfo: before 3.4.1-4.18.1

libnettle6-32bit: before 3.4.1-4.18.1

libhogweed4-32bit-debuginfo: before 3.4.1-4.18.1

libhogweed4-32bit: before 3.4.1-4.18.1

libnettle-devel: before 3.4.1-4.18.1

libnettle6-debuginfo: before 3.4.1-4.18.1

libnettle6: before 3.4.1-4.18.1

libnettle-debugsource: before 3.4.1-4.18.1

libhogweed4-debuginfo: before 3.4.1-4.18.1

libhogweed4: before 3.4.1-4.18.1

CPE2.3

• cpe:2.3:o:suse:suse_manager_proxy:4.0:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_manager_retail_branch_server:4.0:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_manager_server:4.0:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap:15-SP1:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap:15:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing:15-LTSS:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing:15-ESPOS:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing:15-SP1-LTSS:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_enterprise_storage:6:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_caas_platform:4.0:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_microos:5.0:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server:15-LTSS:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_module_for_basesystem:15-SP2:*:*:*:*:*:*:*
• cpe:2.3:o:suse:libnettle6-32bit-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:libnettle6-32bit:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:libhogweed4-32bit-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:libhogweed4-32bit:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:libnettle-devel:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:libnettle6-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:libnettle6:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:libnettle-debugsource:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:libhogweed4-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:libhogweed4:*:*:*:*:*:suse_linux:*:*

External links

https://www.suse.com/support/update/announcement/2021/suse-su-20212143-1/

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.