1) Information disclosure

Risk: Low

CVSSv3: 4.8 [CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-4788

CWE-ID: CWE-200 - Information Exposure

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists in IBM Power9 processors due to unspecified error. A local user can obtain sensitive information from the data in the L1 cache under extenuating circumstances.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

IBM AIX: 7.1, 7.1.1, 7.1.2, 7.1.3, 7.1.4, 7.1.5, 7.2.0, 7.2.1, 7.2.2, 7.2.3, 7.2.4, 7.2.5

CPE

• cpe:/o:ibm_corporation:ibm_aix:7.2.5:
• cpe:/o:ibm_corporation:ibm_aix:7.2.0:
• cpe:/o:ibm_corporation:ibm_aix:7.2.4:
• cpe:/o:ibm_corporation:ibm_aix:7.2.3:
• cpe:/o:ibm_corporation:ibm_aix:7.2.2:
• cpe:/o:ibm_corporation:ibm_aix:7.2.1:
• cpe:/o:ibm_corporation:ibm_aix:7.1.5:
• cpe:/o:ibm_corporation:ibm_aix:7.1.1:
• cpe:/o:ibm_corporation:ibm_aix:7.1.2:
• cpe:/o:ibm_corporation:ibm_aix:7.1:
• cpe:/o:ibm_corporation:ibm_aix:7.1.4:
• cpe:/o:ibm_corporation:ibm_aix:7.1.3:

External links

https://www.ibm.com/support/pages/node/6370729
http://aix.software.ibm.com/aix/efixes/security/power9_advisory.asc

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.