TCP firewalls could be circumvented by sending a SYN Packets...

Vulnerability Description

TCP firewalls could be circumvented by sending a SYN Packets with other flags (like e.g. RST flag) set, which was not correctly discarded by the Linux TCP stack after firewalling.

References

• http://www.openwall.com/lists/oss-security/2012/05/30/8
• http://www.openwall.com/lists/oss-security/2012/05/30/4
• http://www.openwall.com/lists/oss-security/2012/05/30/12
• http://www.openwall.com/lists/oss-security/2012/05/30/11
• http://www.openwall.com/lists/oss-security/2012/05/30/13
• http://www.openwall.com/lists/oss-security/2012/02/03/7
• http://www.openwall.com/lists/oss-security/2012/05/29/8
• http://www.openwall.com/lists/oss-security/2014/02/12/8
• http://www.openwall.com/lists/oss-security/2012/05/30/9
• http://www.openwall.com/lists/oss-security/2012/05/31/3
• http://www.openwall.com/lists/oss-security/2012/05/30/2
• https://www.kb.cert.org/vuls/id/464113
• https://www.kb.cert.org/vuls/id/464113%2C
• https://bugzilla.suse.com/show_bug.cgi?id=744994%2C
• https://www.openwall.com/lists/oss-security/2012/02/03/7
• https://security.netapp.com/advisory/ntap-20210727-0003/