CVE-2021-22946

high

Description

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.

References

https://hackerone.com/reports/1334111

https://lists.debian.org/debian-lts-announce/2021/09/msg00022.html

https://lists.fedoraproject.org/archives/list/[email protected]/message/RWLEC6YVEM2HWUBX67SDGPSY4CQB72OE/

https://www.oracle.com/security-alerts/cpuoct2021.html

https://security.netapp.com/advisory/ntap-20211029-0003/

https://lists.fedoraproject.org/archives/list/[email protected]/message/APOAK4X73EJTAPTSVT7IRVDMUWVXNWGD/

https://security.netapp.com/advisory/ntap-20220121-0008/

https://www.oracle.com/security-alerts/cpujan2022.html

https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf

https://support.apple.com/kb/HT213183

http://seclists.org/fulldisclosure/2022/Mar/29

https://www.oracle.com/security-alerts/cpuapr2022.html

Details

Source: MITRE

Published: 2021-09-29

Updated: 2022-05-13

Type: CWE-319

Risk Information

CVSS v2

Base Score: 5

Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3

Base Score: 7.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Impact Score: 3.6

Exploitability Score: 3.9

Severity: HIGH