Home/CVE/The code that processes control channel messages sent to `named` calls certain functions recursively during packet parsi
CVE

CVE-2023-3341

The code that processes control channel messages sent to `named` calls certain functions recursively during packet parsi

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.

HIGH · CVSS 7.5 EPSS 0.00247
Schedule remediation
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-1325Improperly Controlled Sequential Memory Allocation
CWE-787Out-of-bounds Write
▤

Affected Products & Versions

6
isc bind>= 9.2.0 and < 9.16.44
isc bind>= 9.18.0 and < 9.18.19
isc bind>= 9.19.0 and < 9.19.17
isc bindall versions
fedoraproject fedoraall versions
debian linuxall versions
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · security-officer@isc.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD20 Sep 2023 · 01:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

23
siemens-csafSSA-915275
msrcCVE-2023-3341
suse-csafopenSUSE-SU-2024:13249-1
rhsaRHSA-2025:0039Important
usnUSN-6421-1
🔗

References & Sources

8
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.openwall.com/lists/oss-security/2023/09/20/2Mailing ListPatch
https://kb.isc.org/docs/cve-2023-3341Vendor Advisory
https://lists.debian.org/debian-lts-announce/2024/01/msg00021.htmlThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IPJLLTJCSDJJII7IIZPLTBQNWP7MZH7F/Mailing List
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/U35OARLQCPMVCBBPHWBXY5M6XJLD2TZ5/Mailing List
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VSK5V4W4OHPM3JTJGWAQD6CZW7SFD75B/Mailing ListThird Party Advisory
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