1From 27b0cd89656d39266da7dcab7eb1812dcfc34192 Mon Sep 17 00:00:00 2001
 2From: "Steven M. Schweda" <sms@antinode.info>
 3Date: Sat, 15 Jun 2019 18:13:11 -0700
 4Subject: [PATCH] Fix CVE-2014-9913, buffer overflow in unzip
 5
 6---
 7 list.c | 13 ++++++++++++-
 8 1 file changed, 12 insertions(+), 1 deletion(-)
 9
10diff --git a/list.c b/list.c
11index 5de41e5..e488109 100644
12--- a/list.c
13+++ b/list.c
14@@ -339,7 +339,18 @@ int list_files(__G)    /* return PK-type error code */
15                 G.crec.compression_method == ENHDEFLATED) {
16                 methbuf[5] = dtype[(G.crec.general_purpose_bit_flag>>1) & 3];
17             } else if (methnum >= NUM_METHODS) {
18-                sprintf(&methbuf[4], "%03u", G.crec.compression_method);
19+                /* 2013-02-26 SMS.
20+                 * http://sourceforge.net/p/infozip/bugs/27/  CVE-2014-9913.
21+                 * Unexpectedly large compression methods overflow
22+                 * &methbuf[].  Use the old, three-digit decimal format
23+                 * for values which fit.  Otherwise, sacrifice the
24+                 * colon, and use four-digit hexadecimal.
25+                 */
26+                if (G.crec.compression_method <= 999) {
27+                    sprintf( &methbuf[ 4], "%03u", G.crec.compression_method);
28+                } else {
29+                    sprintf( &methbuf[ 3], "%04X", G.crec.compression_method);
30+                }
31             }
32 
33 #if 0       /* GRR/Euro:  add this? */
34-- 
352.20.1
36