CVE-2021-3639

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Source
https://nvd.nist.gov/vuln/detail/CVE-2021-3639
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3639.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2021-3639
Downstream
Related
Published
2022-08-22T15:15:13Z
Modified
2025-10-21T06:27:22.860564Z
Severity
  • 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N CVSS Calculator
Summary
[none]
Details

A flaw was found in modauthmellon where it does not sanitize logout URLs properly. This issue could be used by an attacker to facilitate phishing attacks by tricking users into visiting a trusted web application URL that redirects to an external and potentially malicious server. The highest threat from this liability is to confidentiality and integrity.

References

Affected packages

Git / github.com/latchset/mod_auth_mellon

Affected ranges

Type
GIT
Repo
https://github.com/latchset/mod_auth_mellon
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
42a11261b9dad2e48d70bdff7c53dd57a12db6f5

Affected versions

v0.*

v0.10.0
v0.11.0
v0.12.0
v0.13.0
v0.13.1
v0.14.0
v0.14.1
v0.14.2
v0.15.0
v0.17.0
v0.4.0
v0.5.0
v0.6.0
v0.6.0-rc1
v0.6.1
v0.7.0
v0.8.0
v0.9.0
v0.9.1

Other

v0_16_0

Database specific

vanir_signatures

[
    {
        "signature_type": "Function",
        "digest": {
            "function_hash": "83105587025666378258602412050770007892",
            "length": 455.0
        },
        "deprecated": false,
        "signature_version": "v1",
        "target": {
            "function": "am_check_url",
            "file": "auth_mellon_util.c"
        },
        "source": "https://github.com/latchset/mod_auth_mellon/commit/42a11261b9dad2e48d70bdff7c53dd57a12db6f5",
        "id": "CVE-2021-3639-06f962b5"
    },
    {
        "signature_type": "Line",
        "digest": {
            "line_hashes": [
                "280196004057991006795901954659145925227",
                "61501412547766912992816068119698943885",
                "121989369976254605987379571555865310157",
                "28373241189536936529294675472970530512",
                "210226503878164329466142730749373246164",
                "144331043775858122924234340824680977387"
            ],
            "threshold": 0.9
        },
        "deprecated": false,
        "signature_version": "v1",
        "target": {
            "file": "auth_mellon_util.c"
        },
        "source": "https://github.com/latchset/mod_auth_mellon/commit/42a11261b9dad2e48d70bdff7c53dd57a12db6f5",
        "id": "CVE-2021-3639-cc818928"
    }
]