Under the default configuration, Devise-Two-Factor versions >= 2.2.0 & < 6.0.0 generate TOTP shared secrets that are 120 bits instead of the 128-bit minimum defined by RFC 4226. Using a shared secret shorter than the minimum to generate a multi-factor authentication code could make it easier for an attacker to guess the shared secret and generate valid TOTP codes.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Under the default configuration, Devise-Two-Factor versions >= 2.2.0 & < 6.0.0 generate TOTP shared     secrets that are 120 bits instead of the 128-bit minimum defined by RFC 4226. Using a shared secret     shorter than the minimum to generate a multi-factor authentication code could make it easier for an     attacker to guess the shared secret and generate valid TOTP codes. (CVE-2024-8796)

Note that Nessus relies on the presence of the package as reported by the vendor.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - Under the default configuration, Devise-Two-Factor versions >= 2.2.0 & < 6.0.0 generate TOTP shared
    secrets that are 120 bits instead of the 128-bit minimum defined by RFC 4226. Using a shared secret
    shorter than the minimum to generate a multi-factor authentication code could make it easier for an
    attacker to guess the shared secret and generate valid TOTP codes. (CVE-2024-8796)

The remote Ubuntu 20.04 LTS / 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7050-1 advisory.

    Benoit Ct-Jodoin and Michael Nipper discovered that Devise-Two-Factor incorrectly handled one-time     password validation. An attacker could possibly use this issue to intercept and re-use a one-time     password. (CVE-2021-43177)

    Garrett Rappaport discovered that Devise-Two-Factor incorrectly handled generating multi-factor     authentication codes. An attacker could possibly use this issue to generate valid multi-factor     authentication codes. (CVE-2024-8796)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Type	Severity
256297	Linux Distros Unpatched Vulnerability : CVE-2024-8796	Nessus	Misc.	Local	medium
418190	SCA: security update for devise-two-factor (GHSA-qjxf-mc72-wjr2)	Tenable Cloud Security	SCA Checks	Local	medium
418190	SCA: security update for devise-two-factor (GHSA-qjxf-mc72-wjr2)	Tenable Self-Hosted Container Security	SCA Checks	Local	medium
207993	Ubuntu 20.04 LTS / 22.04 LTS : Devise-Two-Factor vulnerabilities (USN-7050-1)	Nessus	Ubuntu Local Security Checks	Local	medium

Detections

Analytics

CVE-2024-8796

medium

Tenable Plugins

medium

medium

medium

medium