41 lines
1.3 KiB
Diff
41 lines
1.3 KiB
Diff
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Fix CVE-2017-7853:
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https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7853
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https://savannah.gnu.org/support/index.php?109265
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Patch copied from upstream source repository:
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https://git.savannah.gnu.org/cgit/osip.git/commit/?id=1ae06daf3b2375c34af23083394a6f010be24a45
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From 1ae06daf3b2375c34af23083394a6f010be24a45 Mon Sep 17 00:00:00 2001
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From: Aymeric Moizard <amoizard@gmail.com>
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Date: Tue, 21 Feb 2017 17:16:26 +0100
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Subject: [PATCH] * fix bug report: sr #109265: SIP message body length
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underflow in libosip2-4.1.0 https://savannah.gnu.org/support/?109265
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also applicable to current latest version
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---
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src/osipparser2/osip_message_parse.c | 6 ++++++
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1 file changed, 6 insertions(+)
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diff --git a/src/osipparser2/osip_message_parse.c b/src/osipparser2/osip_message_parse.c
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index 1628c60..aa35446 100644
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--- a/src/osipparser2/osip_message_parse.c
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+++ b/src/osipparser2/osip_message_parse.c
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@@ -784,6 +784,12 @@ msg_osip_body_parse (osip_message_t * sip, const char *start_of_buf, const char
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if ('\n' == start_of_body[0] || '\r' == start_of_body[0])
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start_of_body++;
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+ /* if message body is empty or contains a single CR/LF */
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+ if (end_of_body <= start_of_body) {
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+ osip_free (sep_boundary);
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+ return OSIP_SYNTAXERROR;
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+ }
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+
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body_len = end_of_body - start_of_body;
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/* Skip CR before end boundary. */
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--
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2.13.1
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