Detections
Analytics
CVE-2021-22946
critical
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://www.oracle.com/security-alerts/cpuoct2021.html
https://www.oracle.com/security-alerts/cpujul2022.html
https://www.oracle.com/security-alerts/cpujan2022.html
https://www.oracle.com/security-alerts/cpuapr2022.html
https://www.debian.org/security/2022/dsa-5197
https://support.apple.com/kb/HT213183
https://security.netapp.com/advisory/ntap-20220121-0008/
https://security.netapp.com/advisory/ntap-20211029-0003/
https://security.gentoo.org/glsa/202212-01
https://lists.debian.org/debian-lts-announce/2022/08/msg00017.html
https://lists.debian.org/debian-lts-announce/2021/09/msg00022.html
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
Details
Published: 2021-09-29
Updated: 2024-03-27
Risk Information
CVSS v2
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N
Severity: Medium
CVSS v3
Base Score: 7.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Severity: High
CVSS v4
Base Score: 9.3
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Severity: Critical
EPSS
EPSS: 0.00042