| Brad Bishop | 6e60e8b | 2018-02-01 10:27:11 -0500 | [diff] [blame] | 1 | From c501a58f8d5650c8ba21d447c0d6f07eafcb0f15 Mon Sep 17 00:00:00 2001 |
| 2 | From: Chris Liddell <chris.liddell@artifex.com> |
| 3 | Date: Fri, 16 Jun 2017 08:29:25 +0100 |
| 4 | Subject: [PATCH] Bug 698063: Bounds check Ins_JMPR |
| 5 | |
| 6 | --- |
| 7 | base/ttinterp.c | 6 ++++++ |
| 8 | 1 file changed, 6 insertions(+) |
| 9 | |
| 10 | --- end of original header |
| 11 | |
| 12 | CVE: CVE-2017-9739 |
| 13 | |
| 14 | Upstream-Status: Backport [git://git.ghostscript.com/ghostpdl.git] |
| 15 | |
| 16 | Signed-off-by: Joe Slater <joe.slater@windriver.com> |
| 17 | |
| 18 | diff --git a/base/ttinterp.c b/base/ttinterp.c |
| 19 | index af457e8..adf3f0c 100644 |
| 20 | --- a/base/ttinterp.c |
| 21 | +++ b/base/ttinterp.c |
| 22 | @@ -1794,6 +1794,12 @@ static int nInstrCount=0; |
| 23 | |
| 24 | static void Ins_JMPR( INS_ARG ) |
| 25 | { |
| 26 | + if ( BOUNDS(CUR.IP + args[0], CUR.codeSize ) ) |
| 27 | + { |
| 28 | + CUR.error = TT_Err_Invalid_Reference; |
| 29 | + return; |
| 30 | + } |
| 31 | + |
| 32 | CUR.IP += (Int)(args[0]); |
| 33 | CUR.step_ins = FALSE; |
| 34 | |
| 35 | -- |
| 36 | 1.7.9.5 |
| 37 | |