PT-2020-6100 · Ibm · Db2

Eddie Zhu · Published 2020-06-30 · Updated 2020-07-07 · CVE-2020-4386

Positive Technologies (AI Summary)

CVSS v3.1

4.7

Medium

Base vector

AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) versions 9.7, 10.1, 10.5, 11.1, and 11.5

Description The issue is caused by synchronization errors when using a shared resource, potentially allowing an attacker to gain unauthorized access to protected information. A local user could obtain sensitive information using a race condition of a symbolic link.

Recommendations For versions 9.7, 10.1, 10.5, 11.1, and 11.5, consider restricting access to the symbolic link to minimize the risk of exploitation until a patch is available. As a temporary workaround, consider disabling the use of symbolic links in the affected DB2 versions until the issue is resolved. Avoid using the affected DB2 versions for sensitive information storage until the vulnerability is fixed.

Fix

Race Condition

Weakness Enumeration

CWE-362

Related Identifiers

BDU:2021-03014

CVE-2020-4386

Affected Products

Db2

References · 6

• https://bdu.fstec.ru/vul/2021-03014 · Security Note
• https://exchange.xforce.ibmcloud.com/vulnerabilities/179268 · Vendor Advisory
• https://ibm.com/support/pages/node/6242342 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-4386 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-4386 · Security Note
• https://t.me/cvenotify/4771 · Telegram Post