Out-of-bounds Read in Isc Bind
CVE-2021-25216
In BIND 9.5.0 -> 9.11.29, 9.12.0 -> 9.16.13, and versions BIND 9.11.3-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 -> 9.17.1 of the BIND 9.17 development branch, BIND se…
Vulnerability class: Buffer Overflow
EPSS: 0.824 (99.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Isc Bind — versions 9.9.3, 9.9.12, 9.9.13
- Isc Bind9 — versions Open Source Branches 9.5 though 9.11 9.5.0 through versions before 9.11.31, Open Source Branches 9.12 though 9.16 9.12.0 through versions before 9.16.14, Supported Preview Branch 9.11-S 9.11.3-S1 through versions before 9.11.31-S1
- Netapp Active_iq_unified_manager
- Netapp Aff_500f
- Netapp Aff_500f_firmware
- Netapp Aff_a250
- Netapp Aff_a250_firmware
- Netapp Cloud_backup
- Netapp H300e
- Netapp H300e_firmware
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-officer@isc.org (x_refsource_CONFIRM, Not Applicable)
- security-officer@isc.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- security-officer@isc.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- security-officer@isc.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- security-officer@isc.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- security-officer@isc.org (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
- security-officer@isc.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- security-officer@isc.org (x_refsource_CONFIRM, Third Party Advisory)
- security-officer@isc.org (VDB Entry, Third Party Advisory, x_refsource_MISC)
- security-officer@isc.org (x_refsource_CONFIRM, Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-25216?
- CVE-2021-25216 is a high-severity vulnerability in Isc Bind, classified under Out-of-bounds Read. CVSS score: 8.1/10. Published 2021-04-29.
- How severe is CVE-2021-25216?
- High severity. CVSS v3 base score is 8.1 out of 10.
- Is CVE-2021-25216 known to be exploited?
- 18 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.