CVE-2022-3094
published 2023-01-26CVE-2022-3094: Sending a flood of dynamic DNS updates may cause `named` to allocate large amounts of memory. This, in turn, may cause `named` to exit due to a lack of free…
PriorityP350high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
13.11%
95.9th percentile
Sending a flood of dynamic DNS updates may cause `named` to allocate large amounts of memory. This, in turn, may cause `named` to exit due to a lack of free memory. We are not aware of any cases where this has been exploited.
Memory is allocated prior to the checking of access permissions (ACLs) and is retained during the processing of a dynamic update from a client whose access credentials are accepted. Memory allocated to clients that are not permitted to send updates is released immediately upon rejection. The scope of this vulnerability is limited therefore to trusted clients who are permitted to make dynamic zone changes.
If a dynamic update is REFUSED, memory will be released again very quickly. Therefore it is only likely to be possible to degrade or stop `named` by sending a flood of unaccepted dynamic updates comparable in magnitude to a query flood intended to achieve the same detrimental outcome.
BIND 9.11 and earlier branches are also affected, but through exhaustion of internal resources rather than memory constraints. This may reduce performance but should not be a significant problem for most servers. Therefore we don't intend to address this for BIND versions prior to BIND 9.16.
This issue affects BIND 9 versions 9.16.0 through 9.16.36, 9.18.0 through 9.18.10, 9.19.0 through 9.19.8, and 9.16.8-S1 through 9.16.36-S1.
Affected
33 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | bind9 | < bind9 1:9.18.11-1 (bookworm) | bind9 1:9.18.11-1 (bookworm) |
| isc | bind | — | — |
| isc | bind | — | — |
| isc | bind | — | — |
| isc | bind | — | — |
| isc | bind | — | — |
| isc | bind | — | — |
| isc | bind | — | — |
| isc | bind | >= 0 < 9.16.37-r0 | 9.16.37-r0 |
| isc | bind | >= 0 < 9.16.37-r0 | 9.16.37-r0 |
| isc | bind | >= 0 < 9.16.37-r0 | 9.16.37-r0 |
| isc | bind | >= 0 < 9.18.11-r0 | 9.18.11-r0 |
| isc | bind | >= 0 < 9.18.11-r0 | 9.18.11-r0 |
| isc | bind | >= 0 < 9.18.11-r0 | 9.18.11-r0 |
| isc | bind | >= 0 < 9.18.11-r0 | 9.18.11-r0 |
| isc | bind | >= 0 < 9.18.11-r0 | 9.18.11-r0 |
| isc | bind | >= 0 < 9.18.11-r0 | 9.18.11-r0 |
| isc | bind | >= 0 < 9.18.11-r0 | 9.18.11-r0 |
| isc | bind | >= 9.16.0 < 9.16.37 | 9.16.37 |
| isc | bind | >= 9.18.0 < 9.18.11 | 9.18.11 |
| isc | bind | >= 9.19.0 < 9.19.9 | 9.19.9 |
| isc | bind9 | >= 0 < 1:9.16.37-1~deb11u1 | 1:9.16.37-1~deb11u1 |
| isc | bind9 | >= 0 < 1:9.18.11-1 | 1:9.18.11-1 |
| isc | bind9 | >= 0 < 1:9.18.11-1 | 1:9.18.11-1 |
| isc | bind9 | >= 0 < 1:9.18.11-1 | 1:9.18.11-1 |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
osv7.5HIGH
vendor_debian7.5HIGH
vendor_msrc7.5HIGH
vendor_redhat7.5HIGH
vendor_ubuntu7.5HIGH
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Ubuntu
Bind vulnerabilities
vendor_ubuntu·2023-01-25·CVSS 7.5
CVE-2022-3094 [HIGH] Bind vulnerabilities
Title: Bind vulnerabilities
Summary: Several security issues were fixed in Bind.
Rob Schulhof discovered that Bind incorrectly handled a large number of
UPDATE messages. A remote attacker could possibly use this issue to cause
Bind to consume resources, resulting in a denial of service.
(CVE-2022-3094)
Borja Marcos discovered that Bind incorrectly handled certain RRSIG
queries. A remote attacker could possibly use this issue to cause Bind to
crash, resulting in a denial of service. This issue only affected Ubuntu
22.04 LTS and Ubuntu 22.10. (CVE-2022-3736)
Maksym Odinintsev discovered that Bind incorrectly handled certain answers
from stale cache. A remote attacker could possibly use this issue to cause
Bind to crash, resulting in a denial of service. This issue only affected
Ubuntu 22
Red Hat
bind: flooding with UPDATE requests may lead to DoS
vendor_redhat·2023-01-25·CVSS 7.5
CVE-2022-3094 [HIGH] CWE-20 bind: flooding with UPDATE requests may lead to DoS
bind: flooding with UPDATE requests may lead to DoS
Sending a flood of dynamic DNS updates may cause `named` to allocate large amounts of memory. This, in turn, may cause `named` to exit due to a lack of free memory. We are not aware of any cases where this has been exploited.
Memory is allocated prior to the checking of access permissions (ACLs) and is retained during the processing of a dynamic update from a client whose access credentials are accepted. Memory allocated to clients that are not permitted to send updates is released immediately upon rejection. The scope of this vulnerability is limited therefore to trusted clients who are permitted to make dynamic zone changes.
If a dynamic update is REFUSED, memory will be released again very quickly. Therefore it is only likely to be po
Microsoft
An UPDATE message flood may cause named to exhaust all available memory
vendor_msrc·2023-01-10·CVSS 7.5
CVE-2022-3094 [HIGH] CWE-416 An UPDATE message flood may cause named to exhaust all available memory
An UPDATE message flood may cause named to exhaust all available memory
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 Releases
Reference: h
Debian
CVE-2022-3094: bind9 - Sending a flood of dynamic DNS updates may cause `named` to allocate large amoun...
vendor_debian·2022·CVSS 7.5
CVE-2022-3094 [HIGH] CVE-2022-3094: bind9 - Sending a flood of dynamic DNS updates may cause `named` to allocate large amoun...
Sending a flood of dynamic DNS updates may cause `named` to allocate large amounts of memory. This, in turn, may cause `named` to exit due to a lack of free memory. We are not aware of any cases where this has been exploited. Memory is allocated prior to the checking of access permissions (ACLs) and is retained during the processing of a dynamic update from a client whose access credentials are accepted. Memory allocated to clients that are not permitted to send updates is released immediately upon rejection. The scope of this vulnerability is limited therefore to trusted clients who are permitted to make dynamic zone changes. If a dynamic update is REFUSED, memory will be released again very quickly. Therefore it is only likely to be possible to degrade or stop `named` by sending a flood
OSV
CVE-2022-3094: Sending a flood of dynamic DNS updates may cause `named` to allocate large amounts of memory
osv·2023-01-26·CVSS 7.5
CVE-2022-3094 [HIGH] CVE-2022-3094: Sending a flood of dynamic DNS updates may cause `named` to allocate large amounts of memory
Sending a flood of dynamic DNS updates may cause `named` to allocate large amounts of memory. This, in turn, may cause `named` to exit due to a lack of free memory. We are not aware of any cases where this has been exploited.
Memory is allocated prior to the checking of access permissions (ACLs) and is retained during the processing of a dynamic update from a client whose access credentials are accepted. Memory allocated to clients that are not permitted to send updates is released immediately upon rejection. The scope of this vulnerability is limited therefore to trusted clients who are permitted to make dynamic zone changes.
If a dynamic update is REFUSED, memory will be released again very quickly. Therefore it is only likely to be possible to degrade or stop `named` by sending a floo
OSV
CVE-2022-3094: Sending a flood of dynamic DNS updates may cause `named` to allocate large amounts of memory
osv·2023-01-26·CVSS 7.5
CVE-2022-3094 [HIGH] CVE-2022-3094: Sending a flood of dynamic DNS updates may cause `named` to allocate large amounts of memory
Sending a flood of dynamic DNS updates may cause `named` to allocate large amounts of memory. This, in turn, may cause `named` to exit due to a lack of free memory. We are not aware of any cases where this has been exploited. Memory is allocated prior to the checking of access permissions (ACLs) and is retained during the processing of a dynamic update from a client whose access credentials are accepted. Memory allocated to clients that are not permitted to send updates is released immediately upon rejection. The scope of this vulnerability is limited therefore to trusted clients who are permitted to make dynamic zone changes. If a dynamic update is REFUSED, memory will be released again very quickly. Therefore it is only likely to be possible to degrade or stop `named` by sending a flood
GHSA
GHSA-8f7f-g9cj-hq6g: Sending a flood of dynamic DNS updates may cause `named` to allocate large amounts of memory
ghsa_unreviewed·2023-01-26
CVE-2022-3094 [HIGH] CWE-400 GHSA-8f7f-g9cj-hq6g: Sending a flood of dynamic DNS updates may cause `named` to allocate large amounts of memory
Sending a flood of dynamic DNS updates may cause `named` to allocate large amounts of memory. This, in turn, may cause `named` to exit due to a lack of free memory. We are not aware of any cases where this has been exploited. Memory is allocated prior to the checking of access permissions (ACLs) and is retained during the processing of a dynamic update from a client whose access credentials are accepted. Memory allocated to clients that are not permitted to send updates is released immediately upon rejection. The scope of this vulnerability is limited therefore to trusted clients who are permitted to make dynamic zone changes. If a dynamic update is REFUSED, memory will be released again very quickly. Therefore it is only likely to be possible to degrade or stop `named` by sending a flood
OSV
bind9 vulnerabilities
osv·2023-01-25·CVSS 7.5
CVE-2022-3094 [HIGH] bind9 vulnerabilities
bind9 vulnerabilities
Rob Schulhof discovered that Bind incorrectly handled a large number of
UPDATE messages. A remote attacker could possibly use this issue to cause
Bind to consume resources, resulting in a denial of service.
(CVE-2022-3094)
Borja Marcos discovered that Bind incorrectly handled certain RRSIG
queries. A remote attacker could possibly use this issue to cause Bind to
crash, resulting in a denial of service. This issue only affected Ubuntu
22.04 LTS and Ubuntu 22.10. (CVE-2022-3736)
Maksym Odinintsev discovered that Bind incorrectly handled certain answers
from stale cache. A remote attacker could possibly use this issue to cause
Bind to crash, resulting in a denial of service. This issue only affected
Ubuntu 22.04 LTS and Ubuntu 22.10. (CVE-2022-3924)
No detection rules found.
No public exploits indexed.
2023-01-26
Published