CVE Tools
Sign in

CVE-2021-40491

Published: Sep 3, 2021Updated: Nov 21, 2024 Sources: CVE List NVDCWE-345
NVD MITRE
6.5CVSSMEDIUM
EPSS Score
0.9%
Top 44.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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 Vector Breakdown

AV:NAC:LPR:NUI:RS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-345

Affected Products

n/an/a
inetutilsgnuOSS Libraries
debian linuxdebian
On-premOS
Operating Systems / linux-distro
gnuoss-projectUSOSS Librariesaka g. nu
debianoss-projectGBOperating Systemsaka debian gnu/linux

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=993476
bugs.debian.org
https://git.savannah.gnu.org/cgit/inetutils.git/commit/?id=58cb043b190fd04effdaea7c9403416b436e50dd
git.savannah.gnu.org
https://lists.gnu.org/archive/html/bug-inetutils/2021-06/msg00002.html
lists.gnu.org
and 1 more references View all →

Timeline

Published
Sep 3, 2021
Last Updated
Nov 21, 2024

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2021-40491 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows