CVE-2021-40642 Information disclosure in n/a

Medium 4.3 Published 29 Jun 2022 Updated 4 Aug 2024

Attackers can steal session cookies transmitted over HTTP due to missing Secure flag, potentially leading to account takeover.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2021-40642?

CVE-2021-40642 is a medium-severity vulnerability in n/a, published on 29 Jun 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Textpattern CMS v4.8.7 and older vulnerability exists through Sensitive Cookie in HTTPS Session Without 'Secure' Attribute via textpattern/lib/txplib_misc.php. The secure flag is not set for txp_login session cookie in the application. If the secure flag is not set, then the cookie will be transmitted in clear-text if the user visits any HTTP URLs within the cookie's scope. An attacker may be able to induce this event by feeding a user suitable links, either directly or via another web site.

Weakness: CWE-311

Which versions are affected by CVE-2021-40642?

It affects 1 product.

Products include Textpattern Textpattern.

How do I fix CVE-2021-40642?

No fix has been published for CVE-2021-40642 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-40642 being exploited?

There is no known exploitation of CVE-2021-40642 in the wild and no public exploit code.

Sources

Also known as GHSA-w43v-qr8x-xq75.