Advisory Details

August 24th, 2023

HP Color LaserJet Pro M479fdw cacheddata_http_handler Stack-based Buffer Overflow Remote Code Execution Vulnerability

ZDI-23-1172
ZDI-CAN-19900

CVE ID CVE-2023-27972
CVSS SCORE 8.8, AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS HP
AFFECTED PRODUCTS Color LaserJet Pro M479fdw
VULNERABILITY DETAILS

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of HP Color LaserJet Pro M479fdw printers. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the cacheddata_http_handler method. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root.

ADDITIONAL DETAILS HP has issued an update to correct this vulnerability. More details can be found at:
https://support.hp.com/us-en/document/ish_7920078-7920104-16/hpsbpi03840
DISCLOSURE TIMELINE
  • 2023-01-26 - Vulnerability reported to vendor
  • 2023-08-24 - Coordinated public release of advisory
CREDIT Angelboy (@scwuaptx) from DEVCORE Research Team
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