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.
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Mon, 05 May 2025 17:15:00 +0000
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Status: PUBLISHED
Assigner: mitre
Published: 2021-11-10T14:03:56.000Z
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

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