Buffer overflow in IBM Spectrum Copy Data Management

1) Buffer overflow

EUVDB-ID: #VU56240

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-29650

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error within the netfilter subsystem in net/netfilter/x_tables.c and include/linux/netfilter/x_tables.h. A local user can trigger memory corruption upon the assignment of a new table value and cause denial of service.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM Spectrum Copy Data Management: 2.2.0 - 2.2.13

External links

http://www.ibm.com/blogs/psirt/security-bulletin-vulnerability-in-linux-kernel-affects-ibm-spectrum-copy-data-management-cve-2021-29650/
http://www.ibm.com/support/pages/node/6539448

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.