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Permissive Regular Expression in tacquito

High severity GitHub Reviewed Published Oct 18, 2024 in facebookincubator/tacquito • Updated Oct 18, 2024

Package

gomod github.com/facebookincubator/tacquito (Go)

Affected versions

< 0.0.0-20241011192817-07b49d1358e6

Patched versions

0.0.0-20241011192817-07b49d1358e6

Description

Impact

The CVE is for a software vulnerability. Network admins who have deployed tacquito (or versions of tacquito) in their production environments and use tacquito to perform command authorization for network devices should be impacted.

Tacquito code prior to commit 07b49d1358e6ec0b5aa482fcd284f509191119e2 was performing regex matches on authorized commands and arguments in a more permissive than intended manner. Configured allowed commands/arguments were intended to require a match on the entire string, but instead only enforced a match on a sub-string. This behaviour could potentially allowed unauthorized commands to be executed.

Patches

The problem has been patched, and users should update to the latest github repo commit to get the patch.

Workarounds

Users should be able to add boundary conditions anchors '^' and '$' to their command configs to remediate the vulnerability without the upgrade

References

@RollerMatic RollerMatic published to facebookincubator/tacquito Oct 18, 2024
Published to the GitHub Advisory Database Oct 18, 2024
Reviewed Oct 18, 2024
Last updated Oct 18, 2024

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
Network
Attack complexity
Low
Privileges required
Low
User interaction
Required
Scope
Unchanged
Confidentiality
Low
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:N/AC:L/PR:L/UI:R/S:U/C:L/I:H/A:H

Weaknesses

CVE ID

No known CVE

GHSA ID

GHSA-p5wf-cmr4-xrwr

Source code

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