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70 lines
2.1 KiB
70 lines
2.1 KiB
7 months ago
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From 649fe647114ca5dee84b0c55106ee58a9703984f Mon Sep 17 00:00:00 2001
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From: Jon Maloy <jmaloy@redhat.com>
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Date: Fri, 16 Feb 2024 10:48:05 -0500
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Subject: [PATCH 15/15] NetworkPkg: Dhcp6Dxe: Packet-Length is not updated
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before appending
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RH-Author: Jon Maloy <jmaloy@redhat.com>
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RH-MergeRequest: 56: Pixiefail issues in NetworkPkg package
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RH-Jira: RHEL-21840 RHEL-21844 RHEL-21846 RHEL-21848 RHEL-21850 RHEL-21852
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RH-Acked-by: Gerd Hoffmann <None>
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RH-Acked-by: Oliver Steffen <osteffen@redhat.com>
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RH-Commit: [15/15] bc7ef287311bb3f757bc26f8921875566bcb5917
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JIRA: https://issues.redhat.com/browse/RHEL-21840
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CVE: CVE-2023-45229
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Upstream: Merged
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commit 75deaf5c3c0d164c61653258c331151241bb69d8
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Author: Doug Flick <dougflick@microsoft.com>
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Date: Tue Feb 13 10:46:02 2024 -0800
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NetworkPkg: Dhcp6Dxe: Packet-Length is not updated before appending
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In order for Dhcp6AppendIaAddrOption (..) to safely append the IA
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Address option, the Packet-Length field must be updated before appending
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the option.
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Cc: Saloni Kasbekar <saloni.kasbekar@intel.com>
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Cc: Zachary Clark-williams <zachary.clark-williams@intel.com>
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Signed-off-by: Doug Flick [MSFT] <doug.edk2@gmail.com>
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Reviewed-by: Saloni Kasbekar <saloni.kasbekar@intel.com>
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Reviewed-by: Leif Lindholm <quic_llindhol@quicinc.com>
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Signed-off-by: Jon Maloy <jmaloy@redhat.com>
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---
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NetworkPkg/Dhcp6Dxe/Dhcp6Utility.c | 10 +++++-----
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1 file changed, 5 insertions(+), 5 deletions(-)
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diff --git a/NetworkPkg/Dhcp6Dxe/Dhcp6Utility.c b/NetworkPkg/Dhcp6Dxe/Dhcp6Utility.c
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index e172ffc2a2..c23eff8766 100644
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--- a/NetworkPkg/Dhcp6Dxe/Dhcp6Utility.c
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+++ b/NetworkPkg/Dhcp6Dxe/Dhcp6Utility.c
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@@ -948,6 +948,11 @@ Dhcp6AppendIaOption (
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*PacketCursor += sizeof (T2);
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}
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+ //
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+ // Update the packet length
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+ //
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+ Packet->Length += BytesNeeded;
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+
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//
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// Fill all the addresses belong to the Ia
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//
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@@ -959,11 +964,6 @@ Dhcp6AppendIaOption (
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}
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}
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- //
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- // Update the packet length
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- //
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- Packet->Length += BytesNeeded;
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-
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//
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// Fill the value of Ia option length
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//
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--
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2.39.3
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