CVE-2023-23915

A cleartext transmission of sensitive information vulnerability exists in curl <v7.88.0 that could cause HSTS functionality to behave incorrectly when multiple URLs are requested in parallel. Using its HSTS support, curl can be instructed to use HTTPS instead of using an insecure clear-text HTTP step even when HTTP is provided in the URL. This HSTS mechanism would however surprisingly fail when multiple transfers are done in parallel as the HSTS cache file gets overwritten by the most recentlycompleted transfer. A later HTTP-only transfer to the earlier host name would then *not* get upgraded properly to HSTS.

Affected products

Alt Linux, Debian, Linuxmint, Red Os, Suse, Ubuntu, Curl

Haxx Curl

< 7.88.0

Fix

Available

CVSS 3.1

6.5 MEDIUM

EPSS

0.9% (55th percentile)

Weakness

CWE-319

NVD status

Modified

Published

2023-02-23

No exploit for CVE-2023-23915 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.