CVE-2021-252157.5HighCWE-617

CVE-2021-25215: An assertion check can fail while answering queries for DNAME records that require the DNAME to be processed to resolve itself

ISC · BIND9

Vendor fix available · Affected: ISC BIND9 · Exploitation: likely to be exploited (10% or more)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

11.7%probability of exploitation in the next 30 days

96th percentile

050100

Higher than 96% of scored CVEs

7.5HighCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

In BIND 9.0.0 -> 9.11.29, 9.12.0 -> 9.16.13, and versions BIND 9.9.3-S1 -> 9.11.29-S1 and 9.16.8-S1 -> 9.16.13-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.11 of the BIND 9.17 development branch, when a vulnerable version of named receives a query for a record triggering the flaw described above, the named process will terminate due to a failed assertion check. The vulnerability affects all currently maintained BIND 9 branches (9.11, 9.11-S, 9.16, 9.16-S, 9.17) as well as all other versions of BIND 9.

Affected products1

From the CVE record. A product or version that is not listed is unknown, not unaffected.

ISC · BIND9Open Source Branches 9.0 through 9.11 9.0.0 through version…; Open Source Branches 9.12 through 9.16 9.12.0 through versi…; Supported Preview Branches 9.9-S through 9.11-S 9.9.3-S1 th…; Supported Preview Branch 9.16-S 9.16.8-S1 through versions…; Development Branch 9.17 9.17.0 through versiosn before 9.17…

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Likely to be exploited (10% or more). EPSS gives it a 10% or higher chance of exploitation in the next 30 days.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Reachable Assertion · Denial of Service
Vendor: ISC
Published: April 2021
Band: Likely to be exploited (10% or more), April 2021

CoverageNo articles yet

No CyberSIXT article names CVE-2021-25215 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.