CVE-2022-42916
In curl before 7.86.0, the HSTS check could be bypassed to trick it into staying with HTTP.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.81%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In curl before 7.86.0, the HSTS check could be bypassed to trick it into staying with HTTP. Using its HSTS support, curl can be instructed to use HTTPS directly (instead of using an insecure cleartext HTTP step) even when HTTP is provided in the URL. This mechanism could be bypassed if the host name in the given URL uses IDN characters that get replaced with ASCII counterparts as part of the IDN conversion, e.g., using the character UTF-8 U+3002 (IDEOGRAPHIC FULL STOP) instead of the common ASCII full stop of U+002E (.). The earliest affected version is 7.77.0 2021-05-26.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 1.81% probability · 77th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-319
- Affected
- haxx/curl · fedoraproject/fedora · apple/macos · splunk/universal forwarder
- Source
- cve@mitre.org
References
- http://seclists.org/fulldisclosure/2023/Jan/19Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2023/Jan/20Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2022/12/21/1Mailing List, Third Party Advisory
- https://curl.se/docs/CVE-2022-42916.htmlVendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/37YEVVC6NAF6H7UHH6YAUY5QEVY6LIH2/Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HVU3IMZCKR4VE6KJ4GCWRL2ILLC6OV76/Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Q27V5YYMXUVI6PRZQVECON32XPVWTKDK/Mailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202212-01Third Party Advisory
- https://security.netapp.com/advisory/ntap-20221209-0010/Broken Link
- https://support.apple.com/kb/HT213604Third Party Advisory
- https://support.apple.com/kb/HT213605Third Party Advisory
- http://seclists.org/fulldisclosure/2023/Jan/19Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2023/Jan/20Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2022/12/21/1Mailing List, Third Party Advisory
- https://curl.se/docs/CVE-2022-42916.htmlVendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/37YEVVC6NAF6H7UHH6YAUY5QEVY6LIH2/Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HVU3IMZCKR4VE6KJ4GCWRL2ILLC6OV76/Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Q27V5YYMXUVI6PRZQVECON32XPVWTKDK/Mailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202212-01Third Party Advisory
- https://security.netapp.com/advisory/ntap-20221209-0010/Broken Link
- https://support.apple.com/kb/HT213604Third Party Advisory
- https://support.apple.com/kb/HT213605Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.