Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
None
Privileges Required
None
Attack Vector
Network
0

CVE-2021-22925

Disclosure Date: August 05, 2021 •
CVE-2021-22925 CVSS v3 Base Score: 5.3
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

Description

curl supports the -t command line option, known as CURLOPT_TELNETOPTIONSin libcurl. This rarely used option is used to send variable=content pairs toTELNET servers.Due to flaw in the option parser for sending NEW_ENV variables, libcurlcould be made to pass on uninitialized data from a stack based buffer to theserver. Therefore potentially revealing sensitive internal information to theserver using a clear-text network protocol.This could happen because curl did not call and use sscanf() correctly whenparsing the string provided by the application.

Add Assessment

No one has assessed this topic. Be the first to add your voice to the community.

CVSS V3 Severity and Metrics
Base Score:
5.3 Medium
Impact Score:
1.4
Exploitability Score:
3.9
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
Low
Integrity (I):
None
Availability (A):
None

General Information

Offensive Application
Unknown
Utility Class
Unknown
Ports
Unknown
OS
Unknown
Vulnerable Versions
https://github.com/curl/curl curl 7.7 to and including 7.77.0
Prerequisites
Unknown
Discovered By
Unknown
PoC Author
Unknown
Metasploit Module
Unknown
Reporter
Unknown

Vendors

  • apple,
  • fedoraproject,
  • haxx,
  • netapp,
  • oracle,
  • siemens,
  • splunk

Products

  • cloud backup -,
  • clustered data ontap -,
  • curl,
  • fedora 33,
  • h300e firmware -,
  • h300s firmware -,
  • h410s firmware -,
  • h500e firmware -,
  • h500s firmware -,
  • h700e firmware -,
  • h700s firmware -,
  • hci management node -,
  • mac os x 10.15.7,
  • macos 11.0,
  • macos 11.0.1,
  • macos 11.1,
  • macos 11.1.0,
  • macos 11.2,
  • macos 11.2.1,
  • macos 11.3,
  • macos 11.3.1,
  • macos 11.4,
  • macos 11.5,
  • mysql server,
  • peoplesoft enterprise peopletools 8.57,
  • peoplesoft enterprise peopletools 8.58,
  • peoplesoft enterprise peopletools 8.59,
  • sinec infrastructure network services,
  • sinema remote connect server,
  • solidfire -,
  • universal forwarder,
  • universal forwarder 9.1.0
Technical Analysis