CVE-2022-23968: High severity xerox versalink firmware vulnerability
Xerox VersaLink devices on specific versions of firmware before 2022-01-26 allow remote attackers to brick the device via a crafted TIFF file in an unauthenticated HTTP POST request. There is a permanent denial of service because image parsing causes a reboot, but image parsing is restarted as soon as the boot process finishes. However, this boot loop can be resolved by a field technician. The TIFF file must have an incomplete Image Directory. Affected firmware versions include xx.42.01 and xx.50.61. NOTE: the 2022-01-24 NeoSmart article included "believed to affect all previous and later versions as of the date of this posting" but a 2022-01-26 vendor statement reports "the latest versions of firmware are not vulnerable to this issue."
Affected Software
Event History
Frequently Asked Questions
What is CVE-2022-23968?
CVE-2022-23968 is a vulnerability that allows remote attackers to brick Xerox VersaLink devices via a crafted TIFF file in an unauthenticated HTTP POST request, causing a permanent denial of service.
Which devices are affected by CVE-2022-23968?
Xerox VersaLink devices on specific versions of firmware before 2022-01-26 are affected by CVE-2022-23968.
How severe is CVE-2022-23968?
CVE-2022-23968 has a severity score of 7.5 (High).
How can I fix CVE-2022-23968?
To fix CVE-2022-23968, update the firmware of your Xerox VersaLink device to version 2022-01-26 or later.
Where can I find more information about CVE-2022-23968?
You can find more information about CVE-2022-23968 at the following references: [Reference 1](https://neosmart.net/blog/2022/xerox-vulnerability-allows-unauthenticated-network-users-to-remotely-brick-printers/), [Reference 2](https://twitter.com/mqudsi/status/1485756915187695618)