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.
References
Link | Resource |
---|---|
https://github.com/wbx-github/uclibc-ng/commit/0f822af0445e5348ce7b7bd8ce1204244f31d174 | Patch Third Party Advisory |
https://uclibc-ng.org/ | Vendor Advisory |
https://www.openwall.com/lists/oss-security/2021/11/09/1 | Exploit Mailing List Third Party Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: mitre
Published: 2021-11-10T14:03:56
Updated: 2021-11-10T14:03:56
Reserved: 2021-11-08T00:00:00
Link: CVE-2021-43523
JSON object: View
NVD Information
Status : Analyzed
Published: 2021-11-10T15:15:12.213
Modified: 2021-11-15T14:19:43.070
Link: CVE-2021-43523
JSON object: View
Redhat Information
No data.
CWE