d46ba1c027
- [server] Fernando Arnaboldi from IOActive found several DoS/code execution vulnerabilities for malicious fwknop clients that manage to get past the authentication stage (so a such a client must be in possession of a valid access.conf encryption key). These vulnerbilities manifested themselves in the handling of malformed access requests, and both the fwknopd server code along with libfko now perform stronger input validation of access request data. These vulnerabilities affect pre-2.0.3 fwknop releases. - [test suite] Added a new fuzzing capability to ensure proper server-side input validation. Fuzzing data is constructed with modified fwknop client code that is designed to emulate malicious behavior.
61 lines
2.5 KiB
Plaintext
61 lines
2.5 KiB
Plaintext
Jonathan Bennett
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- Contributed OpenWRT support - see the extras/openwrt/ directory.
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Sebastien Jeanquier
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- Assisted with getting fwknop included in BackTrack Linux - the choice
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distro for pentation testers.
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Ozmart
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- Suggested the idea for setting an access stanza expiration time.
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- Suggested the abiliy to have certain incoming connections automatically
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NAT'd through to specific internal systems. The result was the FORCE_NAT
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mode.
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- Assisted with getting fwknop running under the Pentoo Linux distro.
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Max Kastanas
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- Contributed both an Android and an iPhone fwknop client port - see the
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top level android/ and iphone/ directories.
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Ted Wynnychenko
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- Helped test fwknop PF support on OpenBSD.
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Andy Rowland
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- Reported a bug where the same encryption key used for two stanzas in the
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access.conf file would result in access requests that matched the second
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stanza to always be treated as a replay attack. This has been fixed for
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the fwknop-2.0.1 release.
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C Anthony Risinger
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- Caught a bug where the default PCAP_LOOP_SLEEP value was 1/100th of a
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second instead of the intended default of 1/10th of a second.
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Franck Joncourt
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- fwknop Debian package maintainer.
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- Contributed a new Debian init script.
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Jonathan Schulz
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- Submitted patches to change HTTP connection type to 'close' for -R mode
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in the client and fix a bug for recv() calls against returned HTTP data.
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Aldan Beaubien
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- Reported an issue with the Morpheus client sending SPA packets with NULL
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IP addresses, and code was added to fwknopd to better validate incoming
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SPA data as a result of this report.
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Geoff Carstairs
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- Suggested a way to redirect valid connection requests to a specific
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internal service via NAT, configurable by each stanza in access.conf.
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This allows for better access control for multple users requiring access
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to multiple internal systems, in a manner that is transparent to the
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user. The result was the FORCE_NAT mode.
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Hank Leininger
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- For iptables firewalls, suggested a check for the 'comment' match to
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ensure the local environment will properly support fwknopd operations.
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The result is the new ENABLE_IPT_COMMENT_CHECK functionality.
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Fernando Arnaboldi (IOActive)
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- Found important buffer overflow conditions for authenticated SPA clients
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in the fwknopd server (pre-2.0.3). These findings enabled fixes to be
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developed along with a new fuzzing capability in the test suite.
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