CVE-2023-2911
What it is
If the `recursive-clients` quota is reached on a BIND 9 resolver configured with both `stale-answer-enable yes;` and `stale-answer-client-timeout 0;`, a sequence of serve-stale-related lookups could cause `named` to loop and terminate unexpectedly due to a stack overflow. This issue affects BIND 9 versions 9.16.33 through 9.16.41, 9.18.7 through 9.18.15, 9.16.33-S1 through 9.16.41-S1, and 9.18.11-S1 through 9.18.15-S1.
At a glance
- Exploitability
- Can be exploited over the network without logging in. High risk of service disruption.
- Exploit odds
- 2.4% chance of exploitation in the next 30 days (EPSS).
- 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: 2.4% in the next 30 days (EPSS).
- Severity: 7.5 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 2.4% · EPSS, next 30 days
- Weakness
- CWE-787 · Out-of-bounds write
- Record status
- Modified
Affected
- Isc Bind ≤ 9.16.41
- Isc Bind ≤ 9.18.15
- Debian Linux 11.0
- Debian Linux 12.0
- Fedoraproject Fedora 37
- Fedoraproject Fedora 38
- Netapp Active Iq Unified Manager
- Netapp h700s Firmware
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-2023-2911.md and follow it. Check whether this project is affected by CVE-2023-2911. 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
- http://www.openwall.com/lists/oss-security/2023/06/21/6
- https://kb.isc.org/docs/cve-2023-2911
- http://www.openwall.com/lists/oss-security/2023/06/21/6
- https://kb.isc.org/docs/cve-2023-2911
References
- http://www.openwall.com/lists/oss-security/2023/06/21/6
- https://kb.isc.org/docs/cve-2023-2911
- https://lists.fedoraproject.org/archives/list/[email protected]/message/SEFCEVCTYEMKTWA7V7EYPI5YQQ4JWDLI/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/U3K6AJK7RRSR53HRF5GGKPA6PDUDWOD2/
- https://security.netapp.com/advisory/ntap-20230703-0010/
- https://www.debian.org/security/2023/dsa-5439
- http://www.openwall.com/lists/oss-security/2023/06/21/6
- https://kb.isc.org/docs/cve-2023-2911
- https://lists.fedoraproject.org/archives/list/[email protected]/message/SEFCEVCTYEMKTWA7V7EYPI5YQQ4JWDLI/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/U3K6AJK7RRSR53HRF5GGKPA6PDUDWOD2/
- https://security.netapp.com/advisory/ntap-20230703-0010/
- https://www.debian.org/security/2023/dsa-5439