Description

The software supports a session in which more than one behavior must be performed by an actor, but it does not properly ensure that the actor performs the behaviors in the required sequence.

Modes of Introduction:

– Implementation

Likelihood of Exploit:

Related Weaknesses

CWE-691

Consequences

Other: Alter Execution Logic

An attacker could cause the software to skip critical steps or perform them in the wrong order, bypassing its intended business logic. This can sometimes have security implications.

Potential Mitigations

CVE References

• CVE-2011-0348
  • Bypass of access/billing restrictions by sending traffic to an unrestricted destination before sending to a restricted destination.

• CVE-2007-3012
  • Attacker can access portions of a restricted page by canceling out of a dialog.

• CVE-2009-5056
  • Ticket-tracking system does not enforce a permission setting.

• CVE-2004-2164
  • Shopping cart does not close a database connection when user restores a previous order, leading to connection exhaustion.

• CVE-2003-0777
  • Chain: product does not properly handle dropped connections, leading to missing NULL terminator (CWE-170) and segmentation fault.

• CVE-2005-3327
  • Chain: Authentication bypass by skipping the first startup step as required by the protocol.

• CVE-2004-0829
  • Chain: File server crashes when sent a “find next” request without an initial “find first.”

• CVE-2010-2620
  • FTP server allows remote attackers to bypass authentication by sending (1) LIST, (2) RETR, (3) STOR, or other commands without performing the required login steps first.

• CVE-2005-3296
  • FTP server allows remote attackers to list arbitrary directories as root by running the LIST command before logging in.