Vulnerability Description
The ftp client in GNU Inetutils before 2.2 does not validate addresses returned by PASV/LSPV responses to make sure they match the server address. This is similar to CVE-2020-8284 for curl.
CVSS Score
6.5
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Gnu | Inetutils | < 2.2 |
| Debian | Debian Linux | 10.0 |
Related Weaknesses (CWE)
References
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=993476Third Party Advisory
- https://git.savannah.gnu.org/cgit/inetutils.git/commit/?id=58cb043b190fd04effdaePatchVendor Advisory
- https://lists.debian.org/debian-lts-announce/2022/11/msg00033.htmlMailing ListThird Party Advisory
- https://lists.gnu.org/archive/html/bug-inetutils/2021-06/msg00002.htmlMailing ListVendor Advisory
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=993476Third Party Advisory
- https://git.savannah.gnu.org/cgit/inetutils.git/commit/?id=58cb043b190fd04effdaePatchVendor Advisory
- https://lists.debian.org/debian-lts-announce/2022/11/msg00033.htmlMailing ListThird Party Advisory
- https://lists.gnu.org/archive/html/bug-inetutils/2021-06/msg00002.htmlMailing ListVendor Advisory
FAQ
What is CVE-2021-40491?
CVE-2021-40491 is a vulnerability with a CVSS score of 6.5 (MEDIUM). The ftp client in GNU Inetutils before 2.2 does not validate addresses returned by PASV/LSPV responses to make sure they match the server address. This is similar to CVE-2020-8284 for curl.
How severe is CVE-2021-40491?
CVE-2021-40491 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-40491?
Check the references section above for vendor advisories and patch information. Affected products include: Gnu Inetutils, Debian Debian Linux.