x/vulndb: potential Go vuln in goauthentik.io: CVE-2023-36456

[GoVulnBot]

CVE-2023-36456 references goauthentik.io, which may be a Go module.

Description:
authentik is an open-source Identity Provider. Prior to versions 2023.4.3 and 2023.5.5, authentik does not verify the source of the X-Forwarded-For and X-Real-IP headers, both in the Python code and the go code. Only authentik setups that are directly accessible by users without a reverse proxy are susceptible to this. Possible spoofing of IP addresses in logs, downstream applications proxied by (built in) outpost, IP bypassing in custom flows if used.

This poses a possible security risk when someone has flows or policies that check the user's IP address, e.g. when they want to ignore the user's 2 factor authentication when the user is connected to the company network. A second security risk is that the IP addresses in the logfiles and user sessions are not reliable anymore. Anybody can spoof this address and one cannot verify that the user has logged in from the IP address that is in their account's log. A third risk is that this header is passed on to the proxied application behind an outpost. The application may do any kind of verification, logging, blocking or rate limiting based on the IP address, and this IP address can be overridden by anybody that want to.

Versions 2023.4.3 and 2023.5.5 contain a patch for this issue.

References:

• NIST: https://nvd.nist.gov/vuln/detail/CVE-2023-36456
• JSON: https://github.com/CVEProject/cvelist/tree/828e209dfb581d6eceda267c13df93a30dcc0f89/2023/36xxx/CVE-2023-36456.json
• advisory: GHSA-cmxp-jcw7-jjjv
• fix: goauthentik/authentik@1502674
• fix: goauthentik/authentik@c07a48a
• web: https://goauthentik.io/docs/releases/2023.4#fixed-in-202343
• web: https://goauthentik.io/docs/releases/2023.5#fixed-in-202355
• Imported by: https://pkg.go.dev/goauthentik.io?tab=importedby

Cross references:
No existing reports found with this module or alias.

See doc/triage.md for instructions on how to triage this report.

modules:
    - module: goauthentik.io
      vulnerable_at: 0.0.0-20230706164724-e2bfcf8a6dd7
      packages:
        - package: authentik
description: |-
    authentik is an open-source Identity Provider. Prior to versions 2023.4.3 and
    2023.5.5, authentik does not verify the source of the X-Forwarded-For and
    X-Real-IP headers, both in the Python code and the go code. Only authentik
    setups that are directly accessible by users without a reverse proxy are
    susceptible to this. Possible spoofing of IP addresses in logs, downstream
    applications proxied by (built in) outpost, IP bypassing in custom flows if
    used.

    This poses a possible security risk when someone has flows or policies that
    check the user's IP address, e.g. when they want to ignore the user's 2 factor
    authentication when the user is connected to the company network. A second
    security risk is that the IP addresses in the logfiles and user sessions are not
    reliable anymore. Anybody can spoof this address and one cannot verify that the
    user has logged in from the IP address that is in their account's log. A third
    risk is that this header is passed on to the proxied application behind an
    outpost. The application may do any kind of verification, logging, blocking or
    rate limiting based on the IP address, and this IP address can be overridden by
    anybody that want to.

    Versions 2023.4.3 and 2023.5.5 contain a patch for this issue.
cves:
    - CVE-2023-36456
references:
    - advisory: https://github.com/goauthentik/authentik/security/advisories/GHSA-cmxp-jcw7-jjjv
    - fix: https://github.com/goauthentik/authentik/commit/15026748d19d490eb2baf9a9566ead4f805f7dff
    - fix: https://github.com/goauthentik/authentik/commit/c07a48a3eccbd7b23026f72136d3392bbc6f795a
    - web: https://goauthentik.io/docs/releases/2023.4#fixed-in-202343
    - web: https://goauthentik.io/docs/releases/2023.5#fixed-in-202355

[jba]

Fix to Go code is in an internal package.

[gopherbot]

Change https://go.dev/cl/508456 mentions this issue: data/excluded: batch add 14 excluded reports

[gopherbot]

Change https://go.dev/cl/592761 mentions this issue: data/reports: unexclude 75 reports