9.6
CVE-2021-43523
- EPSS 2.89%
- Published 10.11.2021 15:15:12
- Last modified 05.05.2025 17:17:27
- Source cve@mitre.org
- Teams watchlist Login
- Open Login
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.
Data is provided by the National Vulnerability Database (NVD)
Uclibc-ng Project ≫ Uclibc-ng Version < 1.0.39
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
| Type | Source | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 2.89% | 0.858 |
| Source | Base Score | Exploit Score | Impact Score | Vector string |
|---|---|---|---|---|
| nvd@nist.gov | 9.6 | 2.8 | 6 |
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
|
| nvd@nist.gov | 6.8 | 8.6 | 6.4 |
AV:N/AC:M/Au:N/C:P/I:P/A:P
|
| 134c704f-9b21-4f2e-91b3-4a467353bcc0 | 9.6 | 2.8 | 6 |
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
|
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.