CVE-2023-3341
Publication date 20 September 2023
Last updated 24 July 2024
Ubuntu priority
Cvss 3 Severity Score
The code that processes control channel messages sent to `named` calls certain functions recursively during packet parsing. Recursion depth is only limited by the maximum accepted packet size; depending on the environment, this may cause the packet-parsing code to run out of available stack memory, causing `named` to terminate unexpectedly. Since each incoming control channel message is fully parsed before its contents are authenticated, exploiting this flaw does not require the attacker to hold a valid RNDC key; only network access to the control channel's configured TCP port is necessary. This issue affects BIND 9 versions 9.2.0 through 9.16.43, 9.18.0 through 9.18.18, 9.19.0 through 9.19.16, 9.9.3-S1 through 9.16.43-S1, and 9.18.0-S1 through 9.18.18-S1.
Status
Package | Ubuntu Release | Status |
---|---|---|
bind9 | 24.04 LTS noble |
Fixed 1:9.18.18-0ubuntu2
|
22.04 LTS jammy |
Fixed 1:9.18.12-0ubuntu0.22.04.3
|
|
20.04 LTS focal |
Fixed 1:9.16.1-0ubuntu2.16
|
|
18.04 LTS bionic |
Fixed 1:9.11.3+dfsg-1ubuntu1.19+esm2
|
|
16.04 LTS xenial |
Fixed 1:9.10.3.dfsg.P4-8ubuntu1.19+esm7
|
|
14.04 LTS trusty |
Fixed 1:9.9.5.dfsg-3ubuntu0.19+esm11
|
|
isc-dhcp | 24.04 LTS noble |
Not affected
|
22.04 LTS jammy |
Not affected
|
|
20.04 LTS focal |
Not affected
|
|
18.04 LTS bionic |
Needs evaluation
|
|
16.04 LTS xenial |
Not affected
|
|
14.04 LTS trusty |
Not affected
|
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alexmurray
As of isc-dhcp-4.4.3-1, isc-dhcp vendors bind9 libs
mdeslaur
I don't believe this issue applies to the bind9 libs in isc-dhcp, marking as not-affected
Severity score breakdown
Parameter | Value |
---|---|
Base score | 7.5 · High |
Attack vector | Network |
Attack complexity | Low |
Privileges required | None |
User interaction | None |
Scope | Unchanged |
Confidentiality | None |
Integrity impact | None |
Availability impact | High |
Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
References
Related Ubuntu Security Notices (USN)
- USN-6390-1
- Bind vulnerabilities
- 20 September 2023
- USN-6421-1
- Bind vulnerability
- 9 October 2023