In uClibc and uClibc-ng before 1.0.39, incorrect handling of special characters in domain names returned by DNS servers via gethostbyname, getaddrinfo, gethostbyaddr, and getnameinfo can lead to output of wrong hostnames (leading to domain hijacking) or injection into applications (leading to remote code execution, XSS, applications crashes, etc.). In other words, a validation step, which is expected in any stub resolver, does not occur.
Metrics
Affected Vendors & Products
Advisories
| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2021-30452 | In uClibc and uClibc-ng before 1.0.39, incorrect handling of special characters in domain names returned by DNS servers via gethostbyname, getaddrinfo, gethostbyaddr, and getnameinfo can lead to output of wrong hostnames (leading to domain hijacking) or injection into applications (leading to remote code execution, XSS, applications crashes, etc.). In other words, a validation step, which is expected in any stub resolver, does not occur. |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Mon, 05 May 2025 17:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2025-05-05T16:46:05.077Z
Reserved: 2021-11-08T00:00:00.000Z
Link: CVE-2021-43523
Updated: 2024-08-04T03:55:29.258Z
Status : Modified
Published: 2021-11-10T15:15:12.213
Modified: 2025-05-05T17:17:27.460
Link: CVE-2021-43523
No data.
OpenCVE Enrichment
No data.
EUVD