0018-Fix-CVE-2014-9913-buffer-overflow-in-unzip.patch (1457B)
- From 27b0cd89656d39266da7dcab7eb1812dcfc34192 Mon Sep 17 00:00:00 2001
- From: "Steven M. Schweda" <sms@antinode.info>
- Date: Sat, 15 Jun 2019 18:13:11 -0700
- Subject: [PATCH] Fix CVE-2014-9913, buffer overflow in unzip
- ---
- list.c | 13 ++++++++++++-
- 1 file changed, 12 insertions(+), 1 deletion(-)
- diff --git a/list.c b/list.c
- index 5de41e5..e488109 100644
- --- a/list.c
- +++ b/list.c
- @@ -339,7 +339,18 @@ int list_files(__G) /* return PK-type error code */
- 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? */
- --
- 2.20.1