CVE-2021-44052
An improper link resolution before file access ('Link Following') vulnerability has been reported to affect QNAP device running QuTScloud, QuTS hero, and QTS.
Impact
An improper link resolution before file access ('Link Following') vulnerability has been reported to affect QNAP device running QuTScloud, QuTS hero, and QTS. If exploited, this vulnerability allows remote attackers to traverse the file system to unintended locations and read or overwrite the contents of unexpected files. We have already fixed this vulnerability in the following versions of QuTScloud, QuTS hero, and QTS: QuTScloud c5.0.1.1998 and later QuTS hero h4.5.4.1971 build 20220310 and later QuTS hero h5.0.0.1986 build 20220324 and later QTS 4.3.4.1976 build 20220303 and later QTS 4.3.3.1945 build 20220303 and later QTS 4.2.6 build 20220304 and later QTS 4.3.6.1965 build 20220302 and later QTS 5.0.0.1986 build 20220324 and later QTS 4.5.4.1991 build 20220329 and later
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Qnap | Qts | from 5.0.0.1716 before 5.0.0.1986 from 4.3.3.0174 before 4.3.3.1945 from 4.3.4.0899 before 4.3.4.1976 from 4.3.6.0895 before 4.3.6.1965 from 4.4.0.0883 before 4.5.4.1991 Version 4.2.6 |
| Qnap | Quts Hero | before h4.5.4.1771 from h5.0.0.1772 before h5.0.0.1986 |
| Qnap | Qutscloud | before c5.0.1.1998 |