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Ghidra untrusted search path in Jython

High
emteere published GHSA-pr2h-5qhx-9544 Jan 6, 2023

Package

Ghidra (ghidra)

Affected versions

< 10.2

Patched versions

10.2 and above

Description

Impact

When the Ghidra Python Interpreter is first launched on Windows, the underlying Jython library runs cmd.exe /c ver to try to get the current version of Windows. Because cmd.exe is not specified with an absolute path, it is possible to drop a malicious cmd.exe into Ghidra's working directory which will get launched instead.

This Jython issue has been fixed in Jython 2.7.3, which Ghidra 10.2 and later uses.

Upgrading Existing Installation

References

The details of the vulnerability can be found here:

For more information

If you have any additional questions, comments, or concerns about this advisory and how it impacts Ghidra, please do not hesitate to open an issue in the Ghidra project's discussions or issues.

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Local
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVE ID

CVE-2019-17664

Weaknesses

Untrusted Search Path

The product searches for critical resources using an externally-supplied search path that can point to resources that are not under the product's direct control. Learn more on MITRE.

Credits