#VU63011 Cleartext transmission of sensitive information in cURL

Published: 2022-05-11

Vulnerability identifier: #VU63011

Vulnerability risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-30115


Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
Client/Desktop applications / Other client software

Vendor: curl.haxx.se


The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to an error in HSTS implementation that can allow curl to continue using HTTP protocol instead of HTTPS if the host name in the given URL used a trailing dot while not using one when it built the HSTS cache. A remote attacker with ability to intercept traffic can obtain potentially sensitive information.

Install updates from vendor's website.

Vulnerable software versions

cURL: 7.82.0 - 7.83.0

External links

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

Latest bulletins with this vulnerability