CVE-2023-36456

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Source
https://nvd.nist.gov/vuln/detail/CVE-2023-36456
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-36456.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2023-36456
Aliases
  • GHSA-cmxp-jcw7-jjjv
Published
2023-07-06T18:24:03.308Z
Modified
2025-11-28T09:14:36.120190Z
Severity
  • 8.3 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L CVSS Calculator
Summary
Authentik lacks Proxy IP headers validation
Details

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.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/36xxx/CVE-2023-36456.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-436"
    ]
}
References

Affected packages

Git / github.com/goauthentik/authentik

Affected ranges

Type
GIT
Repo
https://github.com/goauthentik/authentik
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
918355e1c9d616d34e9333cff2529f4b31f7a560
Database specific 
{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "fixed": "2023.4.3"
        }
    ]
}
Type
GIT
Repo
https://github.com/goauthentik/authentik
Events
Introduced
8faec99bd66fda7ee269bc21ec0cc37fc1a578d7
Fixed
b99ac0122805ed0e99da2da71388ad95f5310b02
Database specific 
{
    "versions": [
        {
            "introduced": "2023.5.0"
        },
        {
            "fixed": "2023.5.5"
        }
    ]
}

Affected versions

version/0.*

version/0.0.10-alpha
version/0.0.11-alpha
version/0.0.12-alpha
version/0.0.13-alpha
version/0.0.2-alpha
version/0.0.3-alpha
version/0.0.4-alpha
version/0.0.5-alpha
version/0.0.6-alpha
version/0.0.7-alpha
version/0.0.8-alpha
version/0.0.9-alpha
version/0.1.0-beta
version/0.1.1-beta
version/0.1.10-beta
version/0.1.11-beta
version/0.1.12-beta
version/0.1.13-beta
version/0.1.14-beta
version/0.1.15-beta
version/0.1.16-beta
version/0.1.17-beta
version/0.1.18-beta
version/0.1.19-beta
version/0.1.2-beta
version/0.1.20-beta
version/0.1.21-beta
version/0.1.22-beta
version/0.1.23-beta
version/0.1.24-beta
version/0.1.25-beta
version/0.1.26-beta
version/0.1.27-beta
version/0.1.28-beta
version/0.1.29-beta
version/0.1.3-beta
version/0.1.30-beta
version/0.1.31-beta
version/0.1.32-beta
version/0.1.33-beta
version/0.1.34-beta
version/0.1.35-beta
version/0.1.36-beta
version/0.1.37-beta
version/0.1.38-beta
version/0.1.4-beta
version/0.1.5-beta
version/0.1.6-beta
version/0.1.7-beta
version/0.1.8-beta
version/0.1.9-beta
version/0.10.0-rc1
version/0.10.0-rc2
version/0.10.0-rc3
version/0.10.0-rc4
version/0.10.0-rc5
version/0.10.0-rc6
version/0.10.0-stable
version/0.10.1-stable
version/0.10.2-stable
version/0.10.3-stable
version/0.10.4-stable
version/0.10.5-stable
version/0.10.6-stable
version/0.10.7-stable
version/0.10.8-stable
version/0.10.9-stable
version/0.11.0-stable
version/0.12.0-stable
version/0.12.1-stable
version/0.12.10-stable
version/0.12.11-stable
version/0.12.2-stable
version/0.12.3-stable
version/0.12.4-stable
version/0.12.5-stable
version/0.12.6-stable
version/0.12.7-stable
version/0.12.8-stable
version/0.12.9-stable
version/0.13.0-rc1
version/0.13.0-rc2
version/0.13.0-rc3
version/0.13.0-rc4
version/0.13.0-stable
version/0.13.1-stable
version/0.13.2-stable
version/0.13.3-stable
version/0.2.0-beta
version/0.2.1-beta
version/0.2.2-beta
version/0.2.3-beta
version/0.2.4-beta
version/0.2.5-beta
version/0.2.6-beta
version/0.2.7-beta
version/0.2.8-beta
version/0.3.0-beta
version/0.4.0-beta
version/0.4.1-beta
version/0.4.2-beta
version/0.5.0-beta
version/0.6.0-beta
version/0.6.1-beta
version/0.6.10-beta
version/0.6.11-beta
version/0.6.2-beta
version/0.6.3-beta
version/0.6.4-beta
version/0.6.5-beta
version/0.6.6-beta
version/0.6.7-beta
version/0.6.8-beta
version/0.6.9-beta
version/0.7.0-beta
version/0.7.1-beta
version/0.7.10-beta
version/0.7.11-beta
version/0.7.12-beta
version/0.7.13-beta
version/0.7.14-beta
version/0.7.15-beta
version/0.7.16-beta
version/0.7.17-beta
version/0.7.2-beta
version/0.7.3-beta
version/0.7.4-beta
version/0.7.5-beta
version/0.7.6-beta
version/0.7.7-beta
version/0.7.8-beta
version/0.7.9-beta
version/0.8.0-beta
version/0.8.1-beta
version/0.8.10-beta
version/0.8.11-beta
version/0.8.12-beta
version/0.8.14-beta
version/0.8.15-beta
version/0.8.2-beta
version/0.8.3-beta
version/0.8.4-beta
version/0.8.5-beta
version/0.8.6-beta
version/0.8.7-beta
version/0.8.8-beta
version/0.8.9-beta
version/0.9.0-pre1
version/0.9.0-pre2
version/0.9.0-pre3
version/0.9.0-pre4
version/0.9.0-pre5
version/0.9.0-pre6
version/0.9.0-pre7
version/0.9.0-rc1
version/0.9.0-rc2
version/0.9.0-stable

version/2021.*

version/2021.1.1-rc1
version/2021.1.1-rc2
version/2021.1.1-stable
version/2021.1.2-stable
version/2021.1.3-stable
version/2021.1.4-stable
version/2021.10.1
version/2021.10.1-rc1
version/2021.10.1-rc2
version/2021.10.1-rc3
version/2021.10.2
version/2021.10.3
version/2021.10.4
version/2021.12.1
version/2021.12.1-rc1
version/2021.12.1-rc2
version/2021.12.1-rc3
version/2021.12.1-rc4
version/2021.12.1-rc5
version/2021.12.2
version/2021.12.3
version/2021.12.4
version/2021.12.5
version/2021.2.1-rc1
version/2021.2.1-rc2
version/2021.2.1-stable
version/2021.2.2-stable
version/2021.2.3-stable
version/2021.2.4-stable
version/2021.2.5-stable
version/2021.2.6-stable
version/2021.3.1
version/2021.3.1-rc1
version/2021.3.1-rc2
version/2021.3.2
version/2021.3.3
version/2021.3.4
version/2021.4.1
version/2021.4.1-rc1
version/2021.4.1-rc2
version/2021.4.2
version/2021.4.3
version/2021.4.4
version/2021.4.5
version/2021.5.1
version/2021.5.1-rc1
version/2021.5.1-rc10
version/2021.5.1-rc2
version/2021.5.1-rc3
version/2021.5.1-rc4
version/2021.5.1-rc5
version/2021.5.1-rc6
version/2021.5.1-rc7
version/2021.5.1-rc8
version/2021.5.1-rc9
version/2021.5.2
version/2021.5.3
version/2021.5.4
version/2021.6.1
version/2021.6.1-rc1
version/2021.6.1-rc2
version/2021.6.1-rc3
version/2021.6.1-rc4
version/2021.6.1-rc5
version/2021.6.1-rc6
version/2021.6.2
version/2021.6.3
version/2021.6.4
version/2021.7.1
version/2021.7.1-rc1
version/2021.7.1-rc2
version/2021.7.2
version/2021.7.3
version/2021.8.1
version/2021.8.1-rc1
version/2021.8.1-rc2
version/2021.8.2
version/2021.8.3
version/2021.8.4
version/2021.9.1
version/2021.9.1-rc1
version/2021.9.1-rc2
version/2021.9.1-rc3
version/2021.9.2
version/2021.9.3
version/2021.9.4
version/2021.9.5
version/2021.9.6
version/2021.9.7
version/2021.9.8

version/2022.*

version/2022.1.1
version/2022.1.2
version/2022.1.3
version/2022.1.4
version/2022.1.5
version/2022.10.0
version/2022.10.1
version/2022.11.0
version/2022.11.1
version/2022.11.2
version/2022.11.3
version/2022.11.4
version/2022.12.0
version/2022.12.1
version/2022.12.2
version/2022.2.1
version/2022.3.1
version/2022.3.2
version/2022.3.3
version/2022.4.1
version/2022.5.1
version/2022.5.2
version/2022.5.3
version/2022.6.1
version/2022.6.2
version/2022.6.3
version/2022.7.1
version/2022.7.2
version/2022.7.3
version/2022.8.1
version/2022.8.2
version/2022.9.0

version/2023.*

version/2023.1.0
version/2023.1.1
version/2023.1.2
version/2023.2.0
version/2023.2.1
version/2023.2.2
version/2023.4.0
version/2023.4.1
version/2023.4.2
version/2023.5.0
version/2023.5.1
version/2023.5.2
version/2023.5.3
version/2023.5.4