1Integer overflow in src/zm.c:zsdata() causes crash in sz and can leak information to receiver.
2
3Patch taken from Fedora.
4
5CVE: CVE-2018-10195
6Upstream-Status: Inappropriate (dead upstream)
7Signed-off-by: Ross Burton <ross.burton@intel.com>
8
9diff -urN lrzsz-0.12.20/src/zm.c lrzsz-0.12.20.new/src/zm.c
10--- lrzsz-0.12.20/src/zm.c	Tue Dec 29 09:48:38 1998
11+++ lrzsz-0.12.20.new/src/zm.c	Tue Oct  8 12:46:58 2002
12@@ -431,10 +431,12 @@
13 	VPRINTF(3,("zsdata: %lu %s", (unsigned long) length,
14 		Zendnames[(frameend-ZCRCE)&3]));
15 	crc = 0;
16-	do {
17-		zsendline(*buf); crc = updcrc((0377 & *buf), crc);
18-		buf++;
19-	} while (--length>0);
20+
21+	for( ; length; length--) {
22+	  zsendline(*buf); crc = updcrc((0377 & *buf), crc);
23+	  buf++;
24+	}
25+
26 	xsendline(ZDLE); xsendline(frameend);
27 	crc = updcrc(frameend, crc);
28