CVE-2023-39953

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2023-39953
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-39953.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2023-39953
Aliases
  • GHSA-xx3h-v363-q36j
Published
2023-08-10T13:55:19Z
Modified
2026-08-12T03:51:32Z
Severity
  • 4.8 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
Summary
Issuer not verified from obtained token in user_oidc
Details

user_oidc provides the OIDC connect user backend for Nextcloud, an open-source cloud platform. Starting in version 1.0.0 and prior to version 1.3.3, missing verification of the issuer would have allowed an attacker to perform a man-in-the-middle attack returning corrupted or known token they also have access to. user_oidc 1.3.3 contains a patch. No known workarounds are available.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-303"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/39xxx/CVE-2023-39953.json"
}
References

Affected packages

Git / github.com/nextcloud/user_oidc

Affected ranges

Type
GIT
Repo
https://github.com/nextcloud/user_oidc
Events
Introduced
2b27bd81899d8607f82ad41c2831bef91db835a5
Fixed
3ff24f81b96792d96a2647d7b1f857b891c84643
Database specific
Show details 
{
    "cpe":  "cpe:2.3:a:nextcloud:user_oidc:*:*:*:*:*:*:*:*",
    "extracted_events":  [
        {
            "introduced":  "1.0.0"
        },
        {
            "fixed":  "1.3.3"
        }
    ],
    "source":  [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ]
}

Affected versions

v1.*
v1.0.0
v1.1.0
v1.2.0
v1.2.1
v1.3.0
v1.3.1
v1.3.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-39953.json"