IBM Flex System switch firmware products update for Linux Kernel
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2020-12464 |
| CWE-ID | CWE-416 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software |
IBM Flex System CN4093 10Gb Converged Scalable Switch Hardware solutions / Routers & switches, VoIP, GSM, etc IBM Flex System Fabric SI4093 GbFSIM 10Gb Scalable Switch Hardware solutions / Routers & switches, VoIP, GSM, etc IBM Flex System EN2092 1Gb Ethernet Scalable Switch Hardware solutions / Routers & switches, VoIP, GSM, etc Flex System Fabric EN4093/EN4093R 10Gb Scalable Switch Other software / Other software solutions |
| Vendor | IBM Corporation |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Use-after-free
EUVDB-ID: #VU29958
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-2020-12464
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the usb_sg_cancel() function in drivers/usb/core/message.c in the Linux kernel. A local user can trigger a use-after-free error during file transfer to USB driver and execute arbitrary code on the system with elevated privileges.
Install update from vendor's website.
Vulnerable software versionsIBM Flex System CN4093 10Gb Converged Scalable Switch: before 7.8.26.0
Flex System Fabric EN4093/EN4093R 10Gb Scalable Switch: before 7.8.26.0
IBM Flex System Fabric SI4093 GbFSIM 10Gb Scalable Switch: before 7.8.26.0
IBM Flex System EN2092 1Gb Ethernet Scalable Switch: before 7.8.26.0
CPE2.3- cpe:2.3:h:ibm_corporation:ibm_flex_system_cn4093_10gb_converged_scalable_switch:*:*:*:*:*:*:*:*
- cpe:2.3:a:ibm_corporation:flex_system_fabric_en4093_en4093r_10gb_scalable_switch:*:*:*:*:*:*:*:*
- cpe:2.3:h:ibm_corporation:ibm_flex_system_fabric_si4093_gbfsim_10gb_scalable_switch:*:*:*:*:*:*:*:*
- cpe:2.3:h:ibm_corporation:ibm_flex_system_en2092_1gb_ethernet_scalable_switch:*:*:*:*:*:*:*:*
https://www.ibm.com/support/pages/node/6382326
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.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.
The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
