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.
History

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2021-11-10T14:03:56

Updated: 2024-08-04T03:55:29.258Z

Reserved: 2021-11-08T00:00:00

Link: CVE-2021-43523

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2021-11-10T15:15:12.213

Modified: 2021-11-15T14:19:43.070

Link: CVE-2021-43523

cve-icon Redhat

No data.