Vulnerability in Isc Bind
CVE-2021-25214
In BIND 9.8.5 -> 9.8.8, 9.9.3 -> 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 9 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 malformed IXFR triggering the flaw described above, the named process will terminate due to a failed assertion the next time the transferred secondary zone is refreshed.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.062 (93.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 93.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.060 · newest: 0.062 · change: +0.002
Affected products
- Isc Bind — versions 9.9.3, 9.9.12, 9.9.13
- Isc Bind9 — versions Open Source Branch 9.8 9.8.5 through 9.8.8, Open Source Branches 9.9 through 9.11 9.9.3 through versions before 9.11.30, Open Source Branches 9.12 through 9.16 9.12.0 through versions before 9.16.14
- 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
- kb.isc.org/v1/docs/cve-2021-25214 (Vendor Advisory)
- www.openwall.com/lists/oss-security/2021/04/29/1 (mailing-list, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2021/04/29/2 (mailing-list, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2021/04/29/3 (mailing-list, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2021/04/29/4 (mailing-list, Mailing List, Third Party Advisory)
- www.debian.org/security/2021/dsa-4909 (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2021/05/msg00001.html (mailing-list, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- security.netapp.com/advisory/ntap-20210521-0006/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-25214?
- CVE-2021-25214 is a medium-severity vulnerability in Isc Bind, classified under Reachable Assertion. CVSS score: 6.5/10. Published 2021-04-29.
- How severe is CVE-2021-25214?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2021-25214 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.