Vulnerability Report

CVE-2023-2911

Title: Serve-stale-related lookups cause named to loop and terminate unexpectedly due to a stack overflow in BIND 9

DoS

Proof Of Concept

No public PoC currently indexed for CVE-2023-2911.

CWE Category CWE-787
Published Date Jun 21, 2023
Modified Date Nov 21, 2024
Exploit Status Not Found
Score 7.5 CVSS v3.1
Exploit Probability (EPSS)
0.18%

Vulnerability Summary

CVE-2023-2911: 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.

Impacted Vendors

I
isc 1
N
netapp 6
S
sercomm 1

Reference Links

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
CVSS v3.1
Source Entity [email protected]
Severity HIGH
7.5
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2023-2911 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Stack

No specific products linked.