CVE-2021-252195.3Medium

CVE-2021-25219: Lame cache can be abused to severely degrade resolver performance

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.

11.2%probability of exploitation in the next 30 days

96th percentile

050100

Higher than 96% of scored CVEs

5.3MediumCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

In BIND 9.3.0 -> 9.11.35, 9.12.0 -> 9.16.21, and versions 9.9.3-S1 -> 9.11.35-S1 and 9.16.8-S1 -> 9.16.21-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.18 of the BIND 9.17 development branch, exploitation of broken authoritative servers using a flaw in response processing can cause degradation in BIND resolver performance. The way the lame cache is currently designed makes it possible for its internal data structures to grow almost infinitely, which may cause significant delays in client query processing.

Affected products1

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

ISC · BIND9Open Source Branches 9.3 through 9.11 9.3.0 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 versions before 9.17…

On the Atlas

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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
Vendor: ISC
Published: October 2021
Band: Likely to be exploited (10% or more), October 2021

CoverageNo articles yet

No CyberSIXT article names CVE-2021-25219 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.