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CVE

CVE-2025-61729

Excessive resource consumption when printing error string for host certificate validation in crypto/x509
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CVE

CVE-2025-61729

Excessive resource consumption when printing error string for host certificate validation in crypto/x509

Within HostnameError.Error(), when constructing an error string, there is no limit to the number of hosts that will be printed out. Furthermore, the error string is constructed by repeated string concatenation, leading to quadratic runtime. Therefore, a certificate provided by a malicious actor can result in excessive resource consumption.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
7.5
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
C
H
U
0
-
C
H
U
-

Related Resources

No items found.

References

https://go.dev/cl/725920, https://go.dev/issue/76445, https://groups.google.com/g/golang-announce/c/8FJoBkPddm4

Severity

7.5

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
7.5
EPSS Probability
0.00015%
EPSS Percentile
0.02316%
Introduced Version
1.25.0,go1.25.0
Fix Available
1.25.5,go1.25.5

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