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Red Hat Bugzilla – Attachment 234291 Details for
Bug 327781
CVE-2007-5365 dhcpd stack-based buffer overlow
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[patch]
mms checking code backported from dhcp-3.x
dhcp-CVE-2007-5365-dhcp3.diff (text/plain), 763 bytes, created by
Tomas Hoger
on 2007-10-22 17:49:04 UTC
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Description:
mms checking code backported from dhcp-3.x
Filename:
MIME Type:
Creator:
Tomas Hoger
Created:
2007-10-22 17:49:04 UTC
Size:
763 bytes
patch
obsolete
>diff -pruN dhcp-2.0pl5.orig/common/options.c dhcp-2.0pl5.like_dhcp3/common/options.c >--- dhcp-2.0pl5.orig/common/options.c 2000-06-24 09:24:02.000000000 +0200 >+++ dhcp-2.0pl5.like_dhcp3/common/options.c 2007-10-18 17:16:31.000000000 +0200 >@@ -197,9 +197,13 @@ int cons_options (inpacket, outpacket, m > use up to the minimum IP MTU size (576 bytes). */ > /* XXX if a BOOTP client specifies a max message size, we will > honor it. */ >- if (mms) >+ if (mms) { > main_buffer_size = mms - DHCP_FIXED_LEN; >- else if (bootpp) >+ >+ /* Enforce a minimum packet size... */ >+ if (main_buffer_size < (576 - DHCP_FIXED_LEN)) >+ main_buffer_size = 576 - DHCP_FIXED_LEN; >+ } else if (bootpp) > main_buffer_size = 64; > else > main_buffer_size = 576 - DHCP_FIXED_LEN;
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