Vulnerability Details : CVE-2021-22946

A user can tell curl >= 7.20.0 and <= 7.78.0 to require a successful upgrade to TLS when speaking to an IMAP, POP3 or FTP server (`--ssl-reqd` on the command line or`CURLOPT_USE_SSL` set to `CURLUSESSL_CONTROL` or `CURLUSESSL_ALL` withlibcurl). This requirement could be bypassed if the server would return a properly crafted but perfectly legitimate response.This flaw would then make curl silently continue its operations **withoutTLS** contrary to the instructions and expectations, exposing possibly sensitive data in clear text over the network.
Published 2021-09-29 20:15:08
Updated 2024-03-27 15:12:52
Source HackerOne
View at NVD,   CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2021-22946

EPSS FAQ
0.30%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 70 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-22946

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
5.0
 MEDIUM AV:N/AC:L/Au:N/C:P/I:N/A:N
10.0
2.9
 NIST
7.5
 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
3.9
3.6
 NIST

CWE ids for CVE-2021-22946

  • The product transmits sensitive or security-critical data in cleartext in a communication channel that can be sniffed by unauthorized actors.
    Assigned by: nvd@nist.gov (Primary)
  • The product does not implement a required step in a cryptographic algorithm, resulting in weaker encryption than advertised by the algorithm.
    Assigned by: support@hackerone.com (Secondary)

References for CVE-2021-22946

Products affected by CVE-2021-22946

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