QID 330108

Date Published: 2022-09-20

QID 330108: IBM AIX Domain Name System (DNS) cache poisoning Vulnerability due to ISC BIND (bind_advisory21)

CVE-2021-25220: A vulnerability in ISC BIND could allow a remote attacker to poison the cache. AIX uses ISC BIND as part of its DNS functions. ISC BIND could allow a remote attacker to bypass security restrictions, caused by an error when using DNS forwarders.

Affected Versions:
AIX 7.1, 7.2,7.3

QID Detection logic:
This QID checks for the vulnerable versions of AIX.

An attacker could exploit this vulnerability to poison the cache with incorrect records leading to queries being made to the wrong servers, which might also result in false information being returned to clients.

CVSS V3 rated as Critical - 8.6 severity.

CVSS V2 rated as Medium - 5 severity.

Solution

The vendor has released fixes to resolve this vulnerability. Refer to AIX bind to obtain more information.

Vendor References

bind_advisory21 - aix.software.ibm.com/aix/efixes/security/bind_advisory21.asc

CVEs related to QID 330108

CVE-2021-25220 |

Software Advisories

Advisory ID	Software	Component	Link
bind_advisory21			aix.software.ibm.com/aix/efixes/security/bind_advisory21.asc

By selecting these links, you may be leaving CVEreport webspace. We have provided these links to other websites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other websites that are more appropriate for your purpose. CVEreport does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, CVEreport does not endorse any commercial products that may be mentioned on these sites. Please address comments about any linked pages to [email protected].