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

CVE-2021-22897

Disclosure Date: June 11, 2021 •
CVE-2021-22897 CVSS v3 Base Score: 5.3
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

Description

curl 7.61.0 through 7.76.1 suffers from exposure of data element to wrong session due to a mistake in the code for CURLOPT_SSL_CIPHER_LIST when libcurl is built to use the Schannel TLS library. The selected cipher set was stored in a single “static” variable in the library, which has the surprising side-effect that if an application sets up multiple concurrent transfers, the last one that sets the ciphers will accidentally control the set used by all transfers. In a worst-case scenario, this weakens transport security significantly.

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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 7.61.0 through 7.76.1
Prerequisites
Unknown
Discovered By
Unknown
PoC Author
Unknown
Metasploit Module
Unknown
Reporter
Unknown

Vendors

  • haxx,
  • netapp,
  • oracle,
  • siemens,
  • splunk

Products

  • cloud backup -,
  • communications cloud native core binding support function 1.11.0,
  • communications cloud native core network function cloud native environment 1.10.0,
  • communications cloud native core network repository function 1.15.0,
  • communications cloud native core network repository function 1.15.1,
  • communications cloud native core network slice selection function 1.8.0,
  • communications cloud native core service communication proxy 1.15.0,
  • curl,
  • essbase,
  • h300e firmware -,
  • h300s firmware -,
  • h410s firmware -,
  • h500e firmware -,
  • h500s firmware -,
  • h700e firmware -,
  • h700s firmware -,
  • hci compute node firmware -,
  • mysql server,
  • sinec infrastructure network services,
  • solidfire & hci management node -,
  • solidfire baseboard management controller firmware -,
  • solidfire, enterprise sds & hci storage node -,
  • universal forwarder,
  • universal forwarder 9.1.0
Technical Analysis