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CVE-2021-22924

CVE-2021-22924

CVSS 3.7 LOWEPSS 6.3%CWE-20
Vexday Risk Score
8Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 3.7EPSS 6.3%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado
Lifecycle
05 Aug 2021Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
libcurl keeps previously used connections in a connection pool for subsequenttransfers to reuse, if one of them matches the setup.Due to errors in the logic, the config matching function did not take 'issuercert' into account and it compared the involved paths *case insensitively*,which could lead to libcurl reusing wrong connections.File paths are, or can be, case sensitive on many systems but not all, and caneven vary depending on used file systems.The comparison also didn't include the 'issuer cert' which a transfer can setto qualify how to verify the server certificate.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Affected products
n/a · https://github.com/curl/curl

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References
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdfhttps://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdfhttps://cert-portal.siemens.com/productcert/pdf/ssa-732250.pdfhttps://hackerone.com/reports/1223565https://lists.apache.org/thread.html/r61db8e7dcb56dc000a5387a88f7a473bacec5ee01b9ff3f55308aacc%40%3Cdev.kafka.apache.org%3Ehttps://lists.apache.org/thread.html/r61db8e7dcb56dc000a5387a88f7a473bacec5ee01b9ff3f55308aacc%40%3Cusers.kafka.apache.org%3Ehttps://lists.apache.org/thread.html/rbf4ce74b0d1fa9810dec50ba3ace0caeea677af7c27a97111c06ccb7%40%3Cdev.kafka.apache.org%3Ehttps://lists.apache.org/thread.html/rbf4ce74b0d1fa9810dec50ba3ace0caeea677af7c27a97111c06ccb7%40%3Cusers.kafka.apache.org%3Ehttps://lists.debian.org/debian-lts-announce/2021/08/msg00017.htmlhttps://lists.debian.org/debian-lts-announce/2022/08/msg00017.htmlhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FRUCW2UVNYUDZF72DQLFQR4PJEC6CF7V/https://security.netapp.com/advisory/ntap-20210902-0003/