lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date:	Mon, 10 Dec 2007 23:18:07 +0100
From:	Thomas Graf <tgraf@...g.ch>
To:	davem@...emloft.net, herbert@...dor.apana.org.au
Cc:	netdev@...r.kernel.org
Subject: [IPv6] ESP: Discard dummy packets introduced in rfc4303

RFC4303 introduces dummy packets with a nexthdr value of 59
to implement traffic confidentiality. Such packets need to
be dropped silently and the payload may not be attempted to
be parsed as it consists of random chunk.

Signed-off-by: Thomas Graf <tgraf@...g.ch>

Index: net-2.6.25/net/ipv6/esp6.c
===================================================================
--- net-2.6.25.orig/net/ipv6/esp6.c	2007-12-10 16:06:02.000000000 +0100
+++ net-2.6.25/net/ipv6/esp6.c	2007-12-10 16:08:02.000000000 +0100
@@ -238,6 +238,12 @@
 		}
 		/* ... check padding bits here. Silly. :-) */
 
+		/* RFC4303: Drop dummy packets without any error */
+		if (nexthdr[1] == IPPROTO_NONE) {
+			ret = -EINVAL;
+			goto out;
+		}
+
 		pskb_trim(skb, skb->len - alen - padlen - 2);
 		ret = nexthdr[1];
 	}
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Powered by blists - more mailing lists