30 lines
1.3 KiB
Diff
30 lines
1.3 KiB
Diff
From: "Steven M. Schweda" <sms@antinode.info>
|
|
Subject: Fix CVE-2014-9913, buffer overflow in unzip
|
|
Bug: https://sourceforge.net/p/infozip/bugs/27/
|
|
Bug-Debian: https://bugs.debian.org/847485
|
|
Bug-Ubuntu: https://launchpad.net/bugs/387350
|
|
X-Debian-version: 6.0-21
|
|
|
|
--- a/list.c
|
|
+++ b/list.c
|
|
@@ -339,7 +339,18 @@
|
|
G.crec.compression_method == ENHDEFLATED) {
|
|
methbuf[5] = dtype[(G.crec.general_purpose_bit_flag>>1) & 3];
|
|
} else if (methnum >= NUM_METHODS) {
|
|
- sprintf(&methbuf[4], "%03u", G.crec.compression_method);
|
|
+ /* 2013-02-26 SMS.
|
|
+ * http://sourceforge.net/p/infozip/bugs/27/ CVE-2014-9913.
|
|
+ * Unexpectedly large compression methods overflow
|
|
+ * &methbuf[]. Use the old, three-digit decimal format
|
|
+ * for values which fit. Otherwise, sacrifice the
|
|
+ * colon, and use four-digit hexadecimal.
|
|
+ */
|
|
+ if (G.crec.compression_method <= 999) {
|
|
+ sprintf( &methbuf[ 4], "%03u", G.crec.compression_method);
|
|
+ } else {
|
|
+ sprintf( &methbuf[ 3], "%04X", G.crec.compression_method);
|
|
+ }
|
|
}
|
|
|
|
#if 0 /* GRR/Euro: add this? */
|