Advisory Details

December 15th, 2020

FreeBSD FTPD Improper Handling of Exceptional Conditions Privilege Escalation Vulnerability

ZDI-20-1431
ZDI-CAN-11632

CVE ID CVE-2020-7468
CVSS SCORE 8.8, (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
AFFECTED VENDORS FreeBSD
AFFECTED PRODUCTS FTPD
VULNERABILITY DETAILS

This vulnerability allows remote attackers to escalate privileges on affected installations of FreeBSD FTPD. Authentication is required to exploit this vulnerability.

The specific flaw exists within the enforcement of permissions. The process does not properly handle exceptional conditions. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of root.

ADDITIONAL DETAILS FreeBSD has issued an update to correct this vulnerability. More details can be found at:
https://security.FreeBSD.org/advisories/FreeBSD-SA-20:30.ftpd.asc
DISCLOSURE TIMELINE
  • 2020-08-21 - Vulnerability reported to vendor
  • 2020-12-15 - Coordinated public release of advisory
CREDIT Anonymous
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