CVE-2021-25214
published 2021-04-29CVE-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…
PriorityP339medium6.5CVSS 3.1
AVNACLPRLUINSUCNINAH
EPSS
5.94%
92.4th percentile
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.
Affected
43 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | bind9 | < bind9 1:9.16.15-1 (bookworm) | bind9 1:9.16.15-1 (bookworm) |
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| fedoraproject | fedora | — | — |
| fedoraproject | fedora | — | — |
| isc | bind | — | — |
| isc | bind | — | — |
| isc | bind | — | — |
| isc | bind | — | — |
| isc | bind | — | — |
| isc | bind | — | — |
| isc | bind | — | — |
| isc | bind | — | — |
| isc | bind | — | — |
| isc | bind | — | — |
| isc | bind | — | — |
| isc | bind | — | — |
| isc | bind | — | — |
| isc | bind | — | — |
| isc | bind | — | — |
| isc | bind | — | — |
| isc | bind | — | — |
| isc | bind | >= 9.12.0 < 9.16.15 | 9.16.15 |
| isc | bind | >= 9.17.0 < 9.17.12 | 9.17.12 |
| isc | bind | 9.8.5 – 9.8.8 | — |
CVSS provenance
nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
nvdv2.04.0MEDIUMAV:N/AC:L/Au:S/C:N/I:N/A:P
osv6.5MEDIUM
vendor_debian6.5MEDIUM
vendor_msrc6.5MEDIUM
vendor_redhat6.5MEDIUM
vendor_ubuntu6.5MEDIUM
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GHSA
GHSA-pqmv-mqwc-wmr3: In BIND 9
ghsa_unreviewed·2022-05-24
CVE-2021-25214 [MEDIUM] CWE-617 GHSA-pqmv-mqwc-wmr3: In BIND 9
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.
OSV
bind9 vulnerabilities
osv·2021-04-29·CVSS 6.5
CVE-2021-25214 [MEDIUM] bind9 vulnerabilities
bind9 vulnerabilities
Greg Kuechle discovered that Bind incorrectly handled certain incremental
zone updates. A remote attacker could possibly use this issue to cause Bind
to crash, resulting in a denial of service. (CVE-2021-25214)
Siva Kakarla discovered that Bind incorrectly handled certain DNAME
records. A remote attacker could possibly use this issue to cause Bind to
crash, resulting in a denial of service. (CVE-2021-25215)
It was discovered that Bind incorrectly handled GSSAPI security policy
negotiation. A remote attacker could use this issue to cause Bind to crash,
resulting in a denial of service, or possibly execute arbitrary code.
(CVE-2021-25216)
OSV
CVE-2021-25214: In BIND 9
osv·2021-04-29·CVSS 6.5
CVE-2021-25214 [MEDIUM] CVE-2021-25214: In BIND 9
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.
Ubuntu
Bind vulnerabilities
vendor_ubuntu·2025-09-08·CVSS 6.5
CVE-2021-25215 [MEDIUM] Bind vulnerabilities
Title: Bind vulnerabilities
Summary: Several security issues were fixed in Bind.
Greg Kuechle discovered that Bind incorrectly handled certain incremental
zone updates. A remote attacker could possibly use this issue to cause Bind
to crash, resulting in a denial of service. (CVE-2021-25214)
Siva Kakarla discovered that Bind incorrectly handled certain DNAME
records. A remote attacker could possibly use this issue to cause Bind to
crash, resulting in a denial of service. (CVE-2021-25215)
It was discovered that Bind incorrectly handled GSSAPI security policy
negotiation. A remote attacker could use this issue to cause Bind to crash,
resulting in a denial of service, or possibly execute arbitrary code.
(CVE-2021-25216)
Instructions: In general, a standard system update will make all the
CISA ICS
Siemens SINEC INS
cisa_ics·2022-03-10·CVSS 5.9
[MEDIUM] Siemens SINEC INS
## Archived Content In an effort to keep CISA.gov current, the archive contains outdated information that may not reflect current policy or programs.
ICS Advisory
##
Siemens SINEC INS
Last RevisedMarch 10, 2022
Alert CodeICSA-22-069-09
## 1. EXECUTIVE SUMMARY
- CVSS v3 9.8
- ATTENTION: Exploitable remotely/low attack complexity
- Vendor: Siemens
- Equipment: SINEC INS
- Vulnerability: Using Components with Known Vulnerabilities
## 2. RISK EVALUATION
Successful exploitation of this vulnerability in third-party components could allow an attacker to interfere with the affected product in various ways.
## 3. TECHNICAL DETAILS
## 3.1 AFFECTED PRODUCTS
Siemens reports this vulnerability affects the following SINEC INS (Infrastructure Netw
Red Hat
bind: Broken inbound incremental zone update (IXFR) can cause named to terminate unexpectedly
vendor_redhat·2021-04-28·CVSS 6.5
CVE-2021-25214 [MEDIUM] CWE-617 bind: Broken inbound incremental zone update (IXFR) can cause named to terminate unexpectedly
bind: Broken inbound incremental zone update (IXFR) can cause named to terminate unexpectedly
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.
Incremental zone transfers (IXFR) provide a way of transferring changed portion(s) of a zone between servers. An IXFR stream containing SOA records with an owner name other than the transferred zone's apex may cause the receiving named se
Microsoft
A broken inbound incremental zone update (IXFR) can cause named to terminate unexpectedly
vendor_msrc·2021-04-13·CVSS 6.5
CVE-2021-25214 [MEDIUM] CWE-617 A broken inbound incremental zone update (IXFR) can cause named to terminate unexpectedly
A broken inbound incremental zone update (IXFR) can cause named to terminate unexpectedly
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
isc: isc
Customer Action Required: Yes
Remediation: CBL-Mariner Rele
Debian
CVE-2021-25214: bind9 - In BIND 9.8.5 -> 9.8.8, 9.9.3 -> 9.11.29, 9.12.0 -> 9.16.13, and versions BIND 9...
vendor_debian·2021·CVSS 6.5
CVE-2021-25214 [MEDIUM] CVE-2021-25214: bind9 - In BIND 9.8.5 -> 9.8.8, 9.9.3 -> 9.11.29, 9.12.0 -> 9.16.13, and versions BIND 9...
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.
Scope: local
bookworm: resolved (fixed in 1:9.16.15-1)
bullseye: resolved (fixed in 1:9.16.15-1)
forky: resolved (fixed in 1:9.16.15-1)
sid: resolved (fixed in 1:9.16.15-1)
trixie: resolved (fixed in 1:9.16.15-1)
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
http://www.openwall.com/lists/oss-security/2021/04/29/1http://www.openwall.com/lists/oss-security/2021/04/29/2http://www.openwall.com/lists/oss-security/2021/04/29/3http://www.openwall.com/lists/oss-security/2021/04/29/4https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdfhttps://kb.isc.org/v1/docs/cve-2021-25214https://lists.debian.org/debian-lts-announce/2021/05/msg00001.htmlhttps://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-4909http://www.openwall.com/lists/oss-security/2021/04/29/1http://www.openwall.com/lists/oss-security/2021/04/29/2http://www.openwall.com/lists/oss-security/2021/04/29/3http://www.openwall.com/lists/oss-security/2021/04/29/4https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdfhttps://kb.isc.org/v1/docs/cve-2021-25214https://lists.debian.org/debian-lts-announce/2021/05/msg00001.htmlhttps://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
2021-04-29
Published