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Vulnerability Details :

CVE-2025-40775

Summary
Assigner-isc
Assigner Org ID-404fd4d2-a609-4245-b543-2c944a302a22
Published At-21 May, 2025 | 12:35
Updated At-23 May, 2025 | 13:11
Rejected At-
Credits

DNS message with invalid TSIG causes an assertion failure

When an incoming DNS protocol message includes a Transaction Signature (TSIG), BIND always checks it. If the TSIG contains an invalid value in the algorithm field, BIND immediately aborts with an assertion failure. This issue affects BIND 9 versions 9.20.0 through 9.20.8 and 9.21.0 through 9.21.7.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:isc
Assigner Org ID:404fd4d2-a609-4245-b543-2c944a302a22
Published At:21 May, 2025 | 12:35
Updated At:23 May, 2025 | 13:11
Rejected At:
▼CVE Numbering Authority (CNA)
DNS message with invalid TSIG causes an assertion failure

When an incoming DNS protocol message includes a Transaction Signature (TSIG), BIND always checks it. If the TSIG contains an invalid value in the algorithm field, BIND immediately aborts with an assertion failure. This issue affects BIND 9 versions 9.20.0 through 9.20.8 and 9.21.0 through 9.21.7.

Affected Products
Vendor
Internet Systems Consortium, Inc.ISC
Product
BIND 9
Default Status
unaffected
Versions
Affected
  • From 9.20.0 through 9.20.8 (custom)
  • From 9.21.0 through 9.21.7 (custom)
Problem Types
TypeCWE IDDescription
CWECWE-232CWE-232 Improper Handling of Undefined Values
Type: CWE
CWE ID: CWE-232
Description: CWE-232 Improper Handling of Undefined Values
Metrics
VersionBase scoreBase severityVector
3.17.5HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Version: 3.1
Base score: 7.5
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
N/ADenial-of-service. By sending specific messages to the server, an attacker can cause `named` to terminate unexpectedly.
CAPEC ID: N/A
Description: Denial-of-service. By sending specific messages to the server, an attacker can cause `named` to terminate unexpectedly.
Solutions

Upgrade to the patched release most closely related to your current version of BIND 9: 9.20.9 or 9.21.8.

Configurations
Workarounds

No workarounds known.

Exploits

This flaw was discovered in internal testing. We are not aware of any active exploits.

Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://kb.isc.org/docs/cve-2025-40775
vendor-advisory
Hyperlink: https://kb.isc.org/docs/cve-2025-40775
Resource:
vendor-advisory
▼Authorized Data Publishers (ADP)
1. CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
2. CVE Program Container
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
http://www.openwall.com/lists/oss-security/2025/05/21/1
N/A
https://security.netapp.com/advisory/ntap-20250523-0001/
N/A
Hyperlink: http://www.openwall.com/lists/oss-security/2025/05/21/1
Resource: N/A
Hyperlink: https://security.netapp.com/advisory/ntap-20250523-0001/
Resource: N/A
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security-officer@isc.org
Published At:21 May, 2025 | 13:16
Updated At:23 May, 2025 | 14:15

When an incoming DNS protocol message includes a Transaction Signature (TSIG), BIND always checks it. If the TSIG contains an invalid value in the algorithm field, BIND immediately aborts with an assertion failure. This issue affects BIND 9 versions 9.20.0 through 9.20.8 and 9.21.0 through 9.21.7.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.17.5HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Type: Secondary
Version: 3.1
Base score: 7.5
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CPE Matches
Weaknesses
CWE IDTypeSource
CWE-232Secondarysecurity-officer@isc.org
CWE ID: CWE-232
Type: Secondary
Source: security-officer@isc.org
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://kb.isc.org/docs/cve-2025-40775security-officer@isc.org
N/A
http://www.openwall.com/lists/oss-security/2025/05/21/1af854a3a-2127-422b-91ae-364da2661108
N/A
https://security.netapp.com/advisory/ntap-20250523-0001/af854a3a-2127-422b-91ae-364da2661108
N/A
Hyperlink: https://kb.isc.org/docs/cve-2025-40775
Source: security-officer@isc.org
Resource: N/A
Hyperlink: http://www.openwall.com/lists/oss-security/2025/05/21/1
Source: af854a3a-2127-422b-91ae-364da2661108
Resource: N/A
Hyperlink: https://security.netapp.com/advisory/ntap-20250523-0001/
Source: af854a3a-2127-422b-91ae-364da2661108
Resource: N/A

Change History

0
Information is not available yet

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