CVE-2018-1000842 Fat Free CRM vulnerable to Cross-site Scripting

Q: Which versions are affected by CVE-2018-1000842?

10 open source packages ship an affected version, including fat_free_crm. It affects 1 product.

Q: Is CVE-2018-1000842 being exploited?

There is no known exploitation of CVE-2018-1000842 in the wild and no public exploit code.

Q: How do I fix CVE-2018-1000842?

Upgrade fat_free_crm to a fixed version for your release line: 0.14.2, 0.15.2, 0.16.4 or 0.17.3.

Medium 6.1 Published 20 Dec 2018 Updated 16 Sep 2024

Attackers can execute arbitrary JavaScript in user browsers via XSS in FatFreeCRM, potentially leading to session hijacking or data theft.

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: Available

What is CVE-2018-1000842?

CVE-2018-1000842 is a medium-severity cross-site scripting vulnerability in n/a, published on 20 Dec 2018. 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

FatFreeCRM version <=0.14.1, >=0.15.0 <=0.15.1, >=0.16.0 <=0.16.3, >=0.17.0 <=0.17.2, ==0.18.0 contains a Cross Site Scripting (XSS) vulnerability in commit 6d60bc8ed010c4eda05d6645c64849f415f68d65 that can result in Javascript execution. This attack appear to be exploitable via Content with Javascript payload will be executed on end user browsers when they visit the page. This vulnerability appears to have been fixed in 0.18.1, 0.17.3, 0.16.4, 0.15.2, 0.14.2.

Weakness: CWE-79

Which versions are affected by CVE-2018-1000842?

10 open source packages ship an affected version, including fat_free_crm. It affects 1 product.

Package	Affected	Fixed in
`fat_free_crm` RubyGems	All versions	`0.14.2`
`fat_free_crm` RubyGems	All versions	`0.14.2`
`fat_free_crm` RubyGems	From `0.15.0`	`0.15.2`
`fat_free_crm` RubyGems	From `0.15.0`	`0.15.2`
`fat_free_crm` RubyGems	From `0.16.0`	`0.16.4`
`fat_free_crm` RubyGems	From `0.16.0`	`0.16.4`

4 more packages

`fat_free_crm` RubyGems	From `0.17.0`	`0.17.3`
`fat_free_crm` RubyGems	From `0.17.0`	`0.17.3`
`fat_free_crm` RubyGems	From `0.18.0`	`0.18.1`
`fat_free_crm` RubyGems	From `0.18.0`	`0.18.1`

Products include Fatfreecrm Fatfreecrm.

How do I fix CVE-2018-1000842?

Upgrade fat_free_crm to a fixed version for your release line: 0.14.2, 0.15.2, 0.16.4 or 0.17.3.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2018-1000842 being exploited?

There is no known exploitation of CVE-2018-1000842 in the wild and no public exploit code.

CVE-2022-39281 Remote Denial of Service via Tasks endpoint in fat_free_crm Medium 6.5

Sources

Also known as GHSA-j5rj-g695-342r.