[evince] Security bugfixes
mkasik
mkasik at fedoraproject.org
Thu Jan 6 11:00:10 UTC 2011
commit 668e42bc3b14bb5471ed910349cc86023b9b09e7
Author: Marek Kasik <mkasik at redhat.com>
Date: Thu Jan 6 11:57:46 2011 +0100
Security bugfixes
Fixes CVE-2010-2640, CVE-2010-2641, CVE-2010-2642 and CVE-2010-2643
Resolves: #667573
...CVE-2010-2641_CVE-2010-2642_CVE-2010-2643.patch | 96 ++++++++++++++++++++
evince.spec | 10 ++-
2 files changed, 105 insertions(+), 1 deletions(-)
---
diff --git a/evince-CVE-2010-2640_CVE-2010-2641_CVE-2010-2642_CVE-2010-2643.patch b/evince-CVE-2010-2640_CVE-2010-2641_CVE-2010-2642_CVE-2010-2643.patch
new file mode 100644
index 0000000..8d4f504
--- /dev/null
+++ b/evince-CVE-2010-2640_CVE-2010-2641_CVE-2010-2642_CVE-2010-2643.patch
@@ -0,0 +1,96 @@
+commit d4139205b010ed06310d14284e63114e88ec6de2
+Author: José Aliste <jaliste at src.gnome.org>
+Date: Tue Dec 7 15:56:47 2010 -0300
+
+ backends: Fix several security issues in the dvi-backend.
+
+ See CVE-2010-2640, CVE-2010-2641, CVE-2010-2642 and CVE-2010-2643.
+
+diff --git a/backend/dvi/mdvi-lib/afmparse.c b/backend/dvi/mdvi-lib/afmparse.c
+index 164366b..361e23d 100644
+--- a/backend/dvi/mdvi-lib/afmparse.c
++++ b/backend/dvi/mdvi-lib/afmparse.c
+@@ -160,7 +160,7 @@ static char *token(FILE *stream)
+
+ idx = 0;
+ while (ch != EOF && ch != ' ' && ch != lineterm
+- && ch != '\t' && ch != ':' && ch != ';')
++ && ch != '\t' && ch != ':' && ch != ';' && idx < MAX_NAME)
+ {
+ ident[idx++] = ch;
+ ch = fgetc(stream);
+diff --git a/backend/dvi/mdvi-lib/dviread.c b/backend/dvi/mdvi-lib/dviread.c
+index cd8cfa9..d014320 100644
+--- a/backend/dvi/mdvi-lib/dviread.c
++++ b/backend/dvi/mdvi-lib/dviread.c
+@@ -1507,6 +1507,10 @@ int special(DviContext *dvi, int opcode)
+ Int32 arg;
+
+ arg = dugetn(dvi, opcode - DVI_XXX1 + 1);
++ if (arg <= 0) {
++ dvierr(dvi, _("malformed special length\n"));
++ return -1;
++ }
+ s = mdvi_malloc(arg + 1);
+ dread(dvi, s, arg);
+ s[arg] = 0;
+diff --git a/backend/dvi/mdvi-lib/pk.c b/backend/dvi/mdvi-lib/pk.c
+index a579186..08377e6 100644
+--- a/backend/dvi/mdvi-lib/pk.c
++++ b/backend/dvi/mdvi-lib/pk.c
+@@ -469,6 +469,15 @@ static int pk_load_font(DviParams *unused, DviFont *font)
+ }
+ if(feof(p))
+ break;
++
++ /* Although the PK format support bigger char codes,
++ * XeTeX and other extended TeX engines support charcodes up to
++ * 65536, while normal TeX engine supports only charcode up to 255.*/
++ if (cc < 0 || cc > 65536) {
++ mdvi_error (_("%s: unexpected charcode (%d)\n"),
++ font->fontname,cc);
++ goto error;
++ }
+ if(cc < loc)
+ loc = cc;
+ if(cc > hic)
+@@ -512,7 +521,7 @@ static int pk_load_font(DviParams *unused, DviFont *font)
+ }
+
+ /* resize font char data */
+- if(loc > 0 || hic < maxch-1) {
++ if(loc > 0 && hic < maxch-1) {
+ memmove(font->chars, font->chars + loc,
+ (hic - loc + 1) * sizeof(DviFontChar));
+ font->chars = xresize(font->chars,
+diff --git a/backend/dvi/mdvi-lib/tfmfile.c b/backend/dvi/mdvi-lib/tfmfile.c
+index 73ebf26..8c2a30b 100644
+--- a/backend/dvi/mdvi-lib/tfmfile.c
++++ b/backend/dvi/mdvi-lib/tfmfile.c
+@@ -172,7 +172,8 @@ int tfm_load_file(const char *filename, TFMInfo *info)
+ /* We read the entire TFM file into core */
+ if(fstat(fileno(in), &st) < 0)
+ return -1;
+- if(st.st_size == 0)
++ /* according to the spec, TFM files are smaller than 16K */
++ if(st.st_size == 0 || st.st_size >= 16384)
+ goto bad_tfm;
+
+ /* allocate a word-aligned buffer to hold the file */
+diff --git a/backend/dvi/mdvi-lib/vf.c b/backend/dvi/mdvi-lib/vf.c
+index fb49847..a5ae3bb 100644
+--- a/backend/dvi/mdvi-lib/vf.c
++++ b/backend/dvi/mdvi-lib/vf.c
+@@ -165,6 +165,12 @@ static int vf_load_font(DviParams *params, DviFont *font)
+ cc = fuget1(p);
+ tfm = fuget3(p);
+ }
++ if (cc < 0 || cc > 65536) {
++ /* TeX engines do not support char codes bigger than 65535 */
++ mdvi_error(_("(vf) %s: unexpected character %d\n"),
++ font->fontname, cc);
++ goto error;
++ }
+ if(loc < 0 || cc < loc)
+ loc = cc;
+ if(hic < 0 || cc > hic)
diff --git a/evince.spec b/evince.spec
index 726eb55..c0dfa19 100644
--- a/evince.spec
+++ b/evince.spec
@@ -5,7 +5,7 @@
Name: evince
Version: 2.91.3
-Release: 5%{?dist}
+Release: 6%{?dist}
Summary: Document viewer
License: GPLv2+ and GFDL
@@ -15,6 +15,9 @@ Source0: http://download.gnome.org/sources/%{name}/2.91/%{name}-%{version
# https://bugzilla.redhat.com/show_bug.cgi?id=562648
Patch2: evince-t1font-mapping.patch
+# https://bugzilla.redhat.com/show_bug.cgi?id=667573
+Patch3: evince-CVE-2010-2640_CVE-2010-2641_CVE-2010-2642_CVE-2010-2643.patch
+
BuildRequires: gtk3-devel
BuildRequires: glib2-devel >= %{glib2_version}
BuildRequires: poppler-glib-devel >= %{poppler_version}
@@ -107,6 +110,7 @@ It adds an additional tab called "Document" to the file properties dialog.
%prep
%setup -q
%patch2 -p1 -b .t1font-map
+%patch3 -p1 -b .CVE-2010-2640_CVE-2010-2641_CVE-2010-2642_CVE-2010-2643
%build
automake
@@ -240,6 +244,10 @@ glib-compile-schemas %{_datadir}/glib-2.0/schemas ||:
%{_libdir}/nautilus/extensions-2.0/libevince-properties-page.so
%changelog
+* Thu Jan 6 2011 Marek Kasik <mkasik at redhat.com> - 2.91.3-6
+- Fixes CVE-2010-2640, CVE-2010-2641, CVE-2010-2642 and CVE-2010-2643
+- Resolves: #667573
+
* Sat Jan 01 2011 Rex Dieter <rdieter at fedoraproject.org> - 2.91.3-5
- rebuild (poppler)
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