CVE-2022-23968
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.90%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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."
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.90% probability · 78th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-835
- Affected
- xerox/versalink firmware
- Source
- cve@mitre.org
References
- https://neosmart.net/blog/2022/xerox-vulnerability-allows-unauthenticated-network-users-to-remotely-brick-printers/Exploit, Third Party Advisory
- https://twitter.com/mqudsi/status/1485756915187695618Third Party Advisory
- https://neosmart.net/blog/2022/xerox-vulnerability-allows-unauthenticated-network-users-to-remotely-brick-printers/Exploit, Third Party Advisory
- https://twitter.com/mqudsi/status/1485756915187695618Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.