CVE-2021-32732

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://jira.xwiki.org/browse/XWIKI-18408", "name": "https://jira.xwiki.org/browse/XWIKI-18408", "tags": ["Exploit", "Patch", "Vendor Advisory"], "refsource": "MISC"}, {"url": "https://jira.xwiki.org/browse/XWIKI-18384", "name": "https://jira.xwiki.org/browse/XWIKI-18384", "tags": ["Exploit", "Patch", "Vendor Advisory"], "refsource": "MISC"}, {"url": "https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-vh5c-jqfg-mhrh", "name": "https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-vh5c-jqfg-mhrh", "tags": ["Mitigation", "Third Party Advisory"], "refsource": "CONFIRM"}, {"url": "https://github.com/xwiki/xwiki-platform/commit/69548c0320cbd772540cf4668743e69f879812cf", "name": "https://github.com/xwiki/xwiki-platform/commit/69548c0320cbd772540cf4668743e69f879812cf", "tags": ["Patch", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://github.com/xwiki/xwiki-platform/commit/f0440dfcbba705e03f7565cd88893dde57ca3fa8", "name": "https://github.com/xwiki/xwiki-platform/commit/f0440dfcbba705e03f7565cd88893dde57ca3fa8", "tags": ["Patch", "Third Party Advisory"], "refsource": "MISC"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "### Impact It's possible to know if a user has or not an account in a wiki related to an email address, and which username(s) is actually tied to that email by forging a request to the Forgot username page. Note that since this page does not have a CSRF check it's quite easy to perform a lot of those requests. ### Patches This issue has been patched in XWiki 12.10.5 and 13.2RC1. Two different patches are provided: - a first one to fix the CSRF problem - a more complex one that now relies on sending an email for the Forgot username process. ### Workarounds It's possible to fix the problem without uprading by editing the ForgotUsername page in version below 13.x, to use the following code: https://github.com/xwiki/xwiki-platform/blob/69548c0320cbd772540cf4668743e69f879812cf/xwiki-platform-core/xwiki-platform-administration/xwiki-platform-administration-ui/src/main/resources/XWiki/ForgotUsername.xml#L39-L123 In version after 13.x it's also possible to edit manually the forgotusername.vm file, but it's really encouraged to upgrade the version here. ### References * https://jira.xwiki.org/browse/XWIKI-18384 * https://jira.xwiki.org/browse/XWIKI-18408 ### For more information If you have any questions or comments about this advisory: * Open an issue in [Jira XWiki](https://jira.xwiki.org) * Email us at [security ML](mailto:security@xwiki.org)"}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-352"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2021-32732", "ASSIGNER": "security-advisories@github.com"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 4.3, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "MEDIUM", "availabilityImpact": "NONE", "confidentialityImpact": "PARTIAL"}, "severity": "MEDIUM", "acInsufInfo": false, "impactScore": 2.9, "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": true}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 2.8}}, "publishedDate": "2022-02-04T23:15Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:xwiki:xwiki:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "12.10.5"}, {"cpe23Uri": "cpe:2.3:a:xwiki:xwiki:13.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:xwiki:xwiki:13.1:-:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2022-02-10T18:39Z"}