CVE-2022-27781

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.9% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2022-06-02 · updated 2026-10-14
Weakness: CWE-400

Description

libcurl provides the `CURLOPT_CERTINFO` option to allow applications torequest details to be returned about a server's certificate chain.Due to an erroneous function, a malicious server could make libcurl built withNSS get stuck in a never-ending busy-loop when trying to retrieve thatinformation.

Affected products

Debian Linux: 10.0, 11.0
curl: before 7.83.1 — fixed in 7.83.1
Clustered Data ONTAP: all versions
NetApp H300S Firmware: all versions
NetApp H410S Firmware: all versions
NetApp H500S Firmware: all versions
NetApp H700S Firmware: all versions
NetApp Hci Bootstrap Os: all versions
NetApp Hci Compute Node: all versions
NetApp Solidfire, Enterprise Sds & Hci Storage Node: all versions
NetApp Solidfire & Hci Management Node: all versions
Splunk Universal Forwarder: from 8.2.0 before 8.2.12; from 9.0.0 before 9.0.6; 9.1.0 — fixed in 8.2.12, 9.0.6

How to fix

Upgrade to a fixed version: curl 7.83.1; Splunk Universal Forwarder 8.2.12, 9.0.6. Check the vendor advisory for mitigations.

References

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