(address . guix-patches@gnu.org)
d779b7c331b9e8dbf63288a4ca742f4092ff95e0.1531798424.git.leo@famulari.name
* gnu/packages/ghostscript.scm (ghostscript)[replacement]: New field.
(ghostscript/fixed): New variable.
* gnu/packages/patches/ghostscript-CVE-2018-10194.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
---
gnu/local.mk | 1 +
gnu/packages/ghostscript.scm | 11 ++++
.../patches/ghostscript-CVE-2018-10194.patch | 52 +++++++++++++++++++
3 files changed, 64 insertions(+)
create mode 100644 gnu/packages/patches/ghostscript-CVE-2018-10194.patch
Toggle diff (101 lines)
diff --git a/gnu/local.mk b/gnu/local.mk
index d40b1963d..20a7d17e7 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -713,6 +713,7 @@ dist_patch_DATA = \
%D%/packages/patches/geoclue-config.patch \
%D%/packages/patches/ghc-8.0-fall-back-to-madv_dontneed.patch \
%D%/packages/patches/ghc-dont-pass-linker-flags-via-response-files.patch \
+ %D%/packages/patches/ghostscript-CVE-2018-10194.patch \
%D%/packages/patches/ghostscript-no-header-id.patch \
%D%/packages/patches/ghostscript-no-header-uuid.patch \
%D%/packages/patches/ghostscript-no-header-creationdate.patch \
diff --git a/gnu/packages/ghostscript.scm b/gnu/packages/ghostscript.scm
index 0a6043ba6..1240b1dc1 100644
--- a/gnu/packages/ghostscript.scm
+++ b/gnu/packages/ghostscript.scm
@@ -132,6 +132,7 @@ printing, and psresize, for adjusting page sizes.")
(define-public ghostscript
(package
(name "ghostscript")
+ (replacement ghostscript/fixed)
(version "9.23")
(source
(origin
@@ -250,6 +251,16 @@ output file formats and printers.")
(home-page "https://www.ghostscript.com/")
(license license:agpl3+)))
+(define-public ghostscript/fixed
+ (hidden-package
+ (package
+ (inherit ghostscript)
+ (source
+ (origin
+ (inherit (package-source ghostscript))
+ (patches (append (origin-patches (package-source ghostscript))
+ (search-patches "ghostscript-CVE-2018-10194.patch"))))))))
+
(define-public ghostscript/x
(package/inherit ghostscript
(name (string-append (package-name ghostscript) "-with-x"))
diff --git a/gnu/packages/patches/ghostscript-CVE-2018-10194.patch b/gnu/packages/patches/ghostscript-CVE-2018-10194.patch
new file mode 100644
index 000000000..242e57c27
--- /dev/null
+++ b/gnu/packages/patches/ghostscript-CVE-2018-10194.patch
@@ -0,0 +1,52 @@
+Fix CVE-2018-10194:
+
+https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-10194
+https://bugs.ghostscript.com/show_bug.cgi?id=699255
+
+Patch copied from upstream source repository:
+
+https://git.ghostscript.com/?p=ghostpdl.git;a=commit;h=39b1e54b2968620723bf32e96764c88797714879
+
+From 39b1e54b2968620723bf32e96764c88797714879 Mon Sep 17 00:00:00 2001
+From: Ken Sharp <ken.sharp@artifex.com>
+Date: Wed, 18 Apr 2018 15:46:32 +0100
+Subject: [PATCH] pdfwrite - Guard against trying to output an infinite number
+
+Bug #699255 " Buffer overflow on pprintg1 due to mishandle postscript file data to pdf"
+
+The file uses an enormous parameter to xyxhow, causing an overflow in
+the calculation of text positioning (value > 1e39).
+
+Since this is basically a nonsense value, and PostScript only supports
+real values up to 1e38, this patch follows the same approach as for
+a degenerate CTM, and treats it as 0.
+
+Adobe Acrobat Distiller throws a limitcheck error, so we could do that
+instead if this approach proves to be a problem.
+---
+ devices/vector/gdevpdts.c | 7 ++++++-
+ 1 file changed, 6 insertions(+), 1 deletion(-)
+
+diff --git a/devices/vector/gdevpdts.c b/devices/vector/gdevpdts.c
+index 848ad781f..172fe6bc3 100644
+--- a/devices/vector/gdevpdts.c
++++ b/devices/vector/gdevpdts.c
+@@ -103,9 +103,14 @@ append_text_move(pdf_text_state_t *pts, double dw)
+ static int
+ set_text_distance(gs_point *pdist, double dx, double dy, const gs_matrix *pmat)
+ {
+- int code = gs_distance_transform_inverse(dx, dy, pmat, pdist);
++ int code;
+ double rounded;
+
++ if (dx > 1e38 || dy > 1e38)
++ code = gs_error_undefinedresult;
++ else
++ code = gs_distance_transform_inverse(dx, dy, pmat, pdist);
++
+ if (code == gs_error_undefinedresult) {
+ /* The CTM is degenerate.
+ Can't know the distance in user space.
+--
+2.18.0
+
--
2.18.0