SUSE update for openssl-ibmca

1) Observable response discrepancy

EUVDB-ID: #VU75558

Risk: Medium

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

CVE-ID: N/A

CWE-ID: CWE-204 - Observable Response Discrepancy

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform MitM attack.

The vulnerability exists due to observable discrepancy in the IBMCA engine. A remote attacker can perform a timing-based side channel attack in RSA.

Mitigation

Update the affected package openssl-ibmca to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server 12: SP5

openssl-ibmca-debuginfo: before 2.0.3-4.3.1

openssl-ibmca-32bit: before 2.0.3-4.3.1

openssl-ibmca-debugsource: before 2.0.3-4.3.1

openssl-ibmca-debuginfo-32bit: before 2.0.3-4.3.1

openssl-ibmca: before 2.0.3-4.3.1

CPE2.3

• cpe:2.3:o:suse:suse_linux_enterprise_server_12:SP5:*:*:*:*:*:*:*
• cpe:2.3:a:suse:openssl-ibmca-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:openssl-ibmca-32bit:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:openssl-ibmca-debugsource:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:openssl-ibmca-debuginfo-32bit:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:openssl-ibmca:*:*:*:*:*:suse_linux:*:*

External links

https://www.suse.com/support/update/announcement/2023/suse-su-20232047-1/

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.