--- id: CVE-2021-22922 title: >- When curl is instructed to download content using the metalink feature, thecontents is verified against a hash provided in the metalink XML file.The metalink XML file points out to the client how to get the same contentfrom a set of diff… summary: >- When curl is instructed to download content using the metalink feature, thecontents is verified against a hash provided in the metalink XML file.The metalink XML file points out to the client how to get the same contentfrom a set of diff… severity: medium cvss: 6.5 cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N' cwe: - CWE-840 - CWE-755 vendor: haxx product: curl affected: - 'curl >= 7.27.0, < 7.78.0' - fedora = 33 - cloud_backup - clustered_data_ontap - hci_management_node - solidfire - 'mysql_server >= 5.7.0, <= 5.7.35' - 'mysql_server >= 8.0.0, <= 8.0.26' - sinec_infrastructure_network_services < 1.0.1.1 - h300s_firmware - h500s_firmware - h700s_firmware - h300e_firmware - h500e_firmware - h700e_firmware - h410s_firmware - 'universal_forwarder >= 8.2.0, < 8.2.12' - 'universal_forwarder >= 9.0.0, < 9.0.6' - universal_forwarder = 9.1.0 patched: - curl 7.78.0 - sinec_infrastructure_network_services 1.0.1.1 - universal_forwarder 9.0.6 published: '2021-08-05' updated: '2026-10-14' sourceUpdated: '2026-10-14T11:16:53.360' source: NVD sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2021-22922' references: - url: 'https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf' label: support@hackerone.com - url: 'https://hackerone.com/reports/1213175' label: support@hackerone.com - url: >- https://lists.apache.org/thread.html/r61db8e7dcb56dc000a5387a88f7a473bacec5ee01b9ff3f55308aacc%40%3Cdev.kafka.apache.org%3E label: support@hackerone.com - url: >- https://lists.apache.org/thread.html/r61db8e7dcb56dc000a5387a88f7a473bacec5ee01b9ff3f55308aacc%40%3Cusers.kafka.apache.org%3E label: support@hackerone.com - url: >- https://lists.apache.org/thread.html/rbf4ce74b0d1fa9810dec50ba3ace0caeea677af7c27a97111c06ccb7%40%3Cdev.kafka.apache.org%3E label: support@hackerone.com - url: >- https://lists.apache.org/thread.html/rbf4ce74b0d1fa9810dec50ba3ace0caeea677af7c27a97111c06ccb7%40%3Cusers.kafka.apache.org%3E label: support@hackerone.com - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FRUCW2UVNYUDZF72DQLFQR4PJEC6CF7V/ label: support@hackerone.com - url: 'https://security.gentoo.org/glsa/202212-01' label: support@hackerone.com - url: 'https://security.netapp.com/advisory/ntap-20210902-0003/' label: support@hackerone.com - url: 'https://www.oracle.com/security-alerts/cpuoct2021.html' label: support@hackerone.com - url: 'https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://hackerone.com/reports/1213175' label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.apache.org/thread.html/r61db8e7dcb56dc000a5387a88f7a473bacec5ee01b9ff3f55308aacc%40%3Cdev.kafka.apache.org%3E label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.apache.org/thread.html/r61db8e7dcb56dc000a5387a88f7a473bacec5ee01b9ff3f55308aacc%40%3Cusers.kafka.apache.org%3E label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.apache.org/thread.html/rbf4ce74b0d1fa9810dec50ba3ace0caeea677af7c27a97111c06ccb7%40%3Cdev.kafka.apache.org%3E label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.apache.org/thread.html/rbf4ce74b0d1fa9810dec50ba3ace0caeea677af7c27a97111c06ccb7%40%3Cusers.kafka.apache.org%3E label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FRUCW2UVNYUDZF72DQLFQR4PJEC6CF7V/ label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://security.gentoo.org/glsa/202212-01' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://security.netapp.com/advisory/ntap-20210902-0003/' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://www.oracle.com/security-alerts/cpuoct2021.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://cert-portal.siemens.com/productcert/html/ssa-389290.html' label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e - url: 'https://cert-portal.siemens.com/productcert/html/ssa-398330.html' label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e tags: - nvd epss: 0.04332 epssPercentile: 0.90984 ingestedAt: '2026-10-14T11:27:22.125Z' --- ## Overview When curl is instructed to download content using the metalink feature, thecontents is verified against a hash provided in the metalink XML file.The metalink XML file points out to the client how to get the same contentfrom a set of different URLs, potentially hosted by different servers and theclient can then download the file from one or several of them. In a serial orparallel manner.If one of the servers hosting the contents has been breached and the contentsof the specific file on that server is replaced with a modified payload, curlshould detect this when the hash of the file mismatches after a completeddownload. It should remove the contents and instead try getting the contentsfrom another URL. This is not done, and instead such a hash mismatch is onlymentioned in text and the potentially malicious content is kept in the file ondisk. ## Affected - `curl >= 7.27.0, < 7.78.0` - `fedora = 33` - `cloud_backup` - `clustered_data_ontap` - `hci_management_node` - `solidfire` - `mysql_server >= 5.7.0, <= 5.7.35` - `mysql_server >= 8.0.0, <= 8.0.26` - `sinec_infrastructure_network_services < 1.0.1.1` - `h300s_firmware` - `h500s_firmware` - `h700s_firmware` - `h300e_firmware` - `h500e_firmware` - `h700e_firmware` - `h410s_firmware` - `universal_forwarder >= 8.2.0, < 8.2.12` - `universal_forwarder >= 9.0.0, < 9.0.6` - `universal_forwarder = 9.1.0` ## Remediation Upgrade past the affected range: - `curl 7.78.0` - `sinec_infrastructure_network_services 1.0.1.1` - `universal_forwarder 9.0.6`