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CVE-2021-43523 PUBLISHED CVSS 6.800000190734863 MEDIUM

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.

EPSS 2.96% · 86.4th percentile

Risk Scores

CVSS v2.0
6.800000190734863
EPSS Score
2.96%
86.4th percentile

Affected Products

VendorProductVersions
uclibcuclibc0
n/an/an/a
uclibc-ng_projectuclibc-ng0

Timeline

References

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