# What is CVE-2022-0011?

> CVE-2022-0011 is a medium-severity flaw (CVSS 6.5) in PAN-OS from Palo Alto Networks, published on 10 February 2022. It is not on the list of flaws known to be exploited today. The latest forecast puts its chance of use in the next 30 days at 0.7%. If you run an affected version, plan in the vendor’s fix.

Canonical page: https://www.precursorintelligence.com/what-is/cve-2022-0011

## At a glance

- **Verdict:** Plan it in. No sign of exploitation and a low forecast. Patch it in your normal update cycle.
- **Precursor Intelligence risk score:** 32 out of 100 (Low); action: Monitor. Kept up to date as the evidence changes.
- **Severity:** Medium (CVSS 6.5 out of 10)
- **Known to be exploited:** No, not on the list of flaws known to be exploited today
- **Chance of use in the next 30 days:** 0.7% (latest exploit-likelihood forecast)
- **Published:** 10 February 2022
- **Record last updated:** 17 February 2022
- **Main product:** PAN-OS from Palo Alto Networks
- **Affected products:** 2

## What is CVE-2022-0011? In plain terms

It can be attacked from anywhere on the internet with an ordinary user account, and nobody has to click anything. If it works, the attacker can change data.

### The official description

PAN-OS software provides options to exclude specific websites from URL category enforcement and those websites are blocked or allowed (depending on your rules) regardless of their associated URL category. This is done by creating a custom URL category list or by using an external dynamic list (EDL) in a URL Filtering profile. When the entries in these lists have a hostname pattern that does not end with a forward slash (/) or a hostname pattern that ends with an asterisk (*), any URL that starts with the specified pattern is considered a match. Entries with a caret (^) at the end of a hostname pattern match any top level domain. This may inadvertently allow or block more URLs than intended and allowing more URLs than intended represents a security risk. For example: example.com will match example.com.website.test example.com.* will match example.com.website.test example.com.^ will match example.com.test You should take special care when using such entries in policy rules that allow traffic. Where possible, use the exact list of hostname names ending with a forward slash (/) instead of using wildcards. PAN-OS 10.1 versions earlier than PAN-OS 10.1.3; PAN-OS 10.0 versions earlier than PAN-OS 10.0.8; PAN-OS 9.1 versions earlier than PAN-OS 9.1.12; all PAN-OS 9.0 versions; PAN-OS 8.1 versions earlier than PAN-OS 8.1.21, and Prisma Access 2.2 and 2.1 versions do not allow customers to change this behavior without changing the URL category list or EDL.

### What kind of flaw is it?

- CWE-436: Interpretation Conflict

### How an attack on it works

- Where an attacker can be: Anywhere on the internet
- How hard it is to pull off: Easy: no special conditions
- Login needed first: An ordinary user account
- Does someone have to click: No, nobody has to do anything
- What an attacker gets: Can change data

Severity vector: `CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N`

## Is CVE-2022-0011 being exploited? Not that we know of

It is not on the list of flaws known to be exploited today. The latest forecast puts the chance of it being used in the next 30 days at 0.7%. That can change at any time, which is why we keep watching.

Exploit likelihood over the last 7 days: 0.7%, 0.7%, 0.7%, 0.7%, 0.7%, 0.7%, 0.7%.

### Timeline

- 10 February 2022: Published
- 17 February 2022: Record last updated

### How Precursor Intelligence ranks it

CVE-2022-0011 scores **32 out of 100 (Low)**, with the action "Monitor".

Every published flaw gets a risk score from 0 to 100, kept up to date as the evidence changes. Four things go into the score, from the one that counts most to the ones that count less:

- Evidence it is being exploited: biggest factor
- How severe it is: strong factor
- How widely exposed it is: smaller factor
- Threat activity around it: smaller factor

85 and above is Critical. Anything confirmed as exploited is always marked for an emergency patch, whatever its score. When this flaw matches software you track, it lands in your list with its score and the reasons behind it.

## Who is affected by CVE-2022-0011?

The published record lists 2 products. Versions are as published: "8.1.0 to before 8.1.21" means from 8.1.0 up to, but not including, 8.1.21.

- [PAN-OS](https://www.precursorintelligence.com/product/paloaltonetworks/pan-os) by [Palo Alto Networks](https://www.precursorintelligence.com/vendors/paloaltonetworks) (Operating system): 8.1.0 to before 8.1.21, 9.0.0 to 9.0.15, 9.1.0 to before 9.1.12, 10.0.0 to before 10.0.8, 10.1.0 to before 10.1.3
- [Prisma Access](https://www.precursorintelligence.com/product/paloaltonetworks/prisma_access) by [Palo Alto Networks](https://www.precursorintelligence.com/vendors/paloaltonetworks) (Application): 2.1, 2.2

## How do I fix CVE-2022-0011?

1. **Check whether you run it.** Compare your versions with the affected products above. Not sure what you run? Precursor Intelligence can work it out from your public website, or you can pick it from a list.
2. **Apply the vendor’s fix.** Install the update named in the vendor’s advisory. We’ve put the advisory first in the list.
3. **If you can’t patch today.** Follow any mitigation the vendor publishes, and limit who can reach the affected system from the internet until the update is in.
4. **Keep an eye on it.** Track the product and we tell you as soon as we spot this flaw on the list of exploited flaws, or a jump in its exploit likelihood.

### References

- [security.paloaltonetworks.com](https://security.paloaltonetworks.com/CVE-2022-0011) (Mitigation, Vendor advisory)

## Questions

### What is CVE-2022-0011?

CVE-2022-0011 is a medium-severity flaw in PAN-OS from Palo Alto Networks, published on 10 February 2022. It can be attacked from anywhere on the internet with an ordinary user account, and nobody has to click anything. If it works, the attacker can change data.

### How serious is CVE-2022-0011?

It scores 6.5 out of 10 on the CVSS severity scale, which is medium. Our risk score for CVE-2022-0011 is 32 out of 100, which is Low. Its action is "Monitor". No sign of exploitation and a low forecast. Patch it in your normal update cycle.

### Is CVE-2022-0011 being exploited?

It is not on the list of flaws known to be exploited today. The latest forecast puts the chance of it being used in the next 30 days at 0.7%. That can change at any time, which is why we keep watching.

### Which versions does CVE-2022-0011 affect?

For PAN-OS from Palo Alto Networks: 8.1.0 to before 8.1.21, 9.0.0 to 9.0.15, 9.1.0 to before 9.1.12, 10.0.0 to before 10.0.8, 10.1.0 to before 10.1.3. The record lists 2 products in all, each with its versions, under "Who is affected" on this page.

### How do I fix CVE-2022-0011?

Install the update the vendor names in its advisory, linked first under "How do I fix" on this page. If you can't patch today, follow the vendor's mitigation and limit who can reach the affected system from the internet.

## Does CVE-2022-0011 affect you?

Precursor Intelligence keeps checking for you:

- **Tell us what you run.** Pick your software from a list, or let us work it out from your website.
- **We match it to every flaw.** Over 400,000 published flaws, checked against your list.
- **Ranked by real-world risk.** Every flaw gets a 0 to 100 risk score, kept up to date, led by evidence criminals are using it.
- **Told as soon as we know.** An alert by email, in the app or by webhook to your own tools.

Start free (no card, nothing to install): https://www.precursorintelligence.com/register
Book a demo: https://www.precursorintelligence.com/contact