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RHEL-67050 CVE-2024-46956 ghostscript: Out-of-Bounds Data Access in Ghostscript Leads to Arbitrary Code Execution

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Resolves: RHEL-67050
This commit is contained in:
Zdenek Dohnal 2025-04-16 12:50:34 +02:00
parent 6b149e4539
commit 41770e5cc8
2 changed files with 40 additions and 0 deletions
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36
0001-PostScript-interpreter-fix-buffer-length-check.patch Normal file
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@ -0,0 +1,36 @@
From f4151f12db32cd3ed26c24327de714bf2c3ed6ca Mon Sep 17 00:00:00 2001
From: Zdenek Hutyra <zhutyra@centrum.cz>
Date: Tue, 23 Jul 2024 11:48:39 +0100
Subject: [PATCH] PostScript interpreter - fix buffer length check
Bug 707895
See bug report for details.
CVE-2024-46956
---
psi/zfile.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/psi/zfile.c b/psi/zfile.c
index a4f5439cd..cb056494b 100644
--- a/psi/zfile.c
+++ b/psi/zfile.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2001-2023 Artifex Software, Inc.
+/* Copyright (C) 2001-2024 Artifex Software, Inc.
All Rights Reserved.
This software is provided AS-IS with no warranty, either express or
@@ -443,7 +443,7 @@ file_continue(i_ctx_t *i_ctx_p)
if (code == ~(uint) 0) { /* all done */
esp -= 6; /* pop proc, pfen, scratch, devlen, iodev , mark */
return o_pop_estack;
- } else if (code > len) { /* overran string */
+ } else if (code > len - devlen) { /* overran string */
return_error(gs_error_rangecheck);
}
else if (iodev != iodev_default(imemory)
--
2.49.0

4
ghostscript.spec
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@ -141,6 +141,9 @@ Patch: 0001-Bug-707788-Fix-decode_utf8-to-forbid-overlong-encodi.patch
# RHEL-67050 CVE-2024-46953 ghostscript: Path Traversal and Code Execution via Integer Overflow in Ghostscript
# https://cgit.ghostscript.com/cgi-bin/cgit.cgi/ghostpdl.git/commit/?id=1f21a45df0fa3abec
Patch: 0001-Bug-707793-Check-for-overflow-validating-format-stri.patch
# RHEL-67050 CVE-2024-46956 ghostscript: Out-of-Bounds Data Access in Ghostscript Leads to Arbitrary Code Execution
# https://cgit.ghostscript.com/cgi-bin/cgit.cgi/ghostpdl.git/commit/?id=f4151f12db32cd3
Patch: 0001-PostScript-interpreter-fix-buffer-length-check.patch
# Downstream patches -- these should be always included when doing rebase:
@ -463,6 +466,7 @@ done
- RHEL-67050 CVE-2024-46952 ghostscript: Buffer Overflow in Ghostscript PDF XRef Stream Handling
- RHEL-67050 CVE-2024-46954 ghostscript: Directory Traversal in Ghostscript via Overlong UTF-8 Encoding
- RHEL-67050 CVE-2024-46953 ghostscript: Path Traversal and Code Execution via Integer Overflow in Ghostscript
- RHEL-67050 CVE-2024-46956 ghostscript: Out-of-Bounds Data Access in Ghostscript Leads to Arbitrary Code Execution
* Tue Oct 29 2024 Troy Dawson <tdawson@redhat.com> - 10.02.1-14
- Bump release for October 2024 mass rebuild: