CVE-2021-25215
What it is
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.
At a glance
- Exploitability
- Can be exploited over the network without logging in. High risk of service disruption.
- Exploit odds
- 11.7% chance of exploitation in the next 30 days (EPSS). Higher than most.
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 11.7% in the next 30 days (EPSS).
- Severity: 7.5 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 11.7% · EPSS, next 30 days
- Weakness
- CWE-617
- Record status
- Modified
Affected
- Debian Linux 9.0
- Debian Linux 10.0
- Isc Bind < 9.11.31
- Isc Bind < 9.16.15
- Isc Bind < 9.17.12
- Isc Bind 9.9.3
- Isc Bind 9.9.12
- Isc Bind 9.9.13
Attack profile CVSS 3.1 · 7.5
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2021-25215.md and follow it. Check whether this project is affected by CVE-2021-25215. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
- https://kb.isc.org/v1/docs/cve-2021-25215
- https://www.oracle.com/security-alerts/cpuoct2021.html
- https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
- https://kb.isc.org/v1/docs/cve-2021-25215
- https://www.oracle.com/security-alerts/cpuoct2021.html
References
- http://www.openwall.com/lists/oss-security/2021/04/29/1
- http://www.openwall.com/lists/oss-security/2021/04/29/2
- http://www.openwall.com/lists/oss-security/2021/04/29/3
- http://www.openwall.com/lists/oss-security/2021/04/29/4
- https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
- https://kb.isc.org/v1/docs/cve-2021-25215
- https://lists.debian.org/debian-lts-announce/2021/05/msg00001.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VEC2XG4Q2ODTN2C4CGXEIXU3EUTBMK7L/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZDSRPCJQ7MZC6CENH5PO3VQOFI7VSWBE/
- https://security.netapp.com/advisory/ntap-20210521-0006/
- https://www.debian.org/security/2021/dsa-4909
- https://www.oracle.com/security-alerts/cpuoct2021.html
- http://www.openwall.com/lists/oss-security/2021/04/29/1
- http://www.openwall.com/lists/oss-security/2021/04/29/2
- http://www.openwall.com/lists/oss-security/2021/04/29/3
- http://www.openwall.com/lists/oss-security/2021/04/29/4
- https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
- https://kb.isc.org/v1/docs/cve-2021-25215
- https://lists.debian.org/debian-lts-announce/2021/05/msg00001.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VEC2XG4Q2ODTN2C4CGXEIXU3EUTBMK7L/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZDSRPCJQ7MZC6CENH5PO3VQOFI7VSWBE/
- https://security.netapp.com/advisory/ntap-20210521-0006/
- https://www.debian.org/security/2021/dsa-4909
- https://www.oracle.com/security-alerts/cpuoct2021.html