FG-IR-23-183: Proxy mode with deep inspection - Stack-based buffer overflow
First published: Tue Jul 11 2023(Updated: )
A stack-based overflow vulnerability [CWE-124] in FortiOS & FortiProxy may allow a remote attacker to execute arbitrary code or command via crafted packets reaching proxy policies or firewall policies with proxy mode alongside SSL deep packet inspection.## Workaround:Disable HTTP/2 support on SSL inspection profiles used by proxy policies or firewall policies with proxy mode.Example with custom-deep-inspection profile:<br/>config firewall ssl-ssh-profile<br/>edit "custom-deep-inspection"<br/>set supported-alpn http1-1<br/>next<br/>end<br/>https://docs.fortinet.com/document/fortigate/7.0.0/new-features/710924/http-2-support-in-proxy-mode-ssl-inspection
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Fortinet FortiOS IPS Engine | ||
| Fortinet FortiProxy |
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Reference Links
- agent/type
- collector/fortiguard-psirt
- source/FortiGuard
- alias/CVE-2023-33308
- agent/severity
- agent/references
- agent/title
- agent/description
- agent/first-publish-date
- agent/last-modified-date
- collector/fortiguard-psirt-latest
- agent/event
- agent/trending
- agent/source
- agent/softwarecombine
- agent/tags
- agent/guess-ai
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- vendor/fortinet
- canonical/fortinet fortios ips engine
- canonical/fortinet fortiproxy