Bug 1831686 (CVE-2020-7043) - CVE-2020-7043 openfortivpn: mishandling of certificate validation
Summary: CVE-2020-7043 openfortivpn: mishandling of certificate validation
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2020-7043
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2020-05-05 13:40 UTC by Dhananjay Arunesh
Modified: 2021-10-28 05:25 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2021-10-28 05:25:53 UTC

Attachments (Terms of Use)

Description Dhananjay Arunesh 2020-05-05 13:40:25 UTC 
An issue was discovered in openfortivpn 1.11.0 when used with OpenSSL before 1.0.2. tunnel.c mishandles certificate validation because hostname comparisons do not consider '\0' characters, as demonstrated by a good.example.com\x00evil.example.com attack.

References:
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00009.html
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00011.html
https://github.com/adrienverge/openfortivpn/commit/cd9368c6a1b4ef91d77bb3fdbe2e5bc34aa6f4c4
https://github.com/adrienverge/openfortivpn/issues/536
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FF6HYIBREQGATRM5COF57MRQWKOKCWZ3/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SRVVNXCNTNMPCIAZIVR4FAGYCSU53FNA/
Note You need to log in before you can comment on or make changes to this bug.