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35 lines
977 B
35 lines
977 B
3 years ago
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From 1c6405d3026e5ceae3d214d63945bba85251af4c Mon Sep 17 00:00:00 2001
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From: Aki Tuomi <aki.tuomi@open-xchange.com>
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Date: Mon, 18 May 2020 12:33:39 +0300
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Subject: [PATCH 2/3] lib-ntlm: Check buffer length on responses
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Add missing check for buffer length.
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If this is not checked, it is possible to send message which
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causes read past buffer bug.
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Broken in c7480644202e5451fbed448508ea29a25cffc99c
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---
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src/lib-ntlm/ntlm-message.c | 5 +++++
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1 file changed, 5 insertions(+)
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diff --git a/src/lib-ntlm/ntlm-message.c b/src/lib-ntlm/ntlm-message.c
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index 160b9f918c..a29413b47e 100644
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--- a/src/lib-ntlm/ntlm-message.c
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+++ b/src/lib-ntlm/ntlm-message.c
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@@ -184,6 +184,11 @@ static bool ntlmssp_check_buffer(const struct ntlmssp_buffer *buffer,
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if (length == 0 && space == 0)
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return 1;
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+ if (length > data_size) {
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+ *error = "buffer length out of bounds";
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+ return 0;
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+ }
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+
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if (offset >= data_size) {
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*error = "buffer offset out of bounds";
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return 0;
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--
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2.11.0
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