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OBS-URL: https://build.opensuse.org/package/show/graphics/libexif?expand=0&rev=35

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Marcus Meissner 2020-05-18 16:08:22 +00:00 committed by Git OBS Bridge
parent c564b8969a
commit b1940fc096
2 changed files with 0 additions and 80 deletions
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60
CVE-2016-6328.patch
View File

@ -1,60 +0,0 @@
From 41bd04234b104312f54d25822f68738ba8d7133d Mon Sep 17 00:00:00 2001
From: Marcus Meissner <marcus@jet.franken.de>
Date: Tue, 25 Jul 2017 23:44:44 +0200
Subject: [PATCH] fixes some (not all) buffer overreads during decoding pentax
makernote entries.
This should fix:
https://sourceforge.net/p/libexif/bugs/125/ CVE-2016-6328
---
libexif/pentax/mnote-pentax-entry.c | 16 +++++++++++++---
1 file changed, 13 insertions(+), 3 deletions(-)
diff --git a/libexif/pentax/mnote-pentax-entry.c b/libexif/pentax/mnote-pentax-entry.c
index d03d159..ea0429a 100644
--- a/libexif/pentax/mnote-pentax-entry.c
+++ b/libexif/pentax/mnote-pentax-entry.c
@@ -425,24 +425,34 @@ mnote_pentax_entry_get_value (MnotePentaxEntry *entry,
case EXIF_FORMAT_SHORT:
{
const unsigned char *data = entry->data;
- size_t k, len = strlen(val);
+ size_t k, len = strlen(val), sizeleft;
+
+ sizeleft = entry->size;
for(k=0; k<entry->components; k++) {
+ if (sizeleft < 2)
+ break;
vs = exif_get_short (data, entry->order);
snprintf (val+len, maxlen-len, "%i ", vs);
len = strlen(val);
data += 2;
+ sizeleft -= 2;
}
}
break;
case EXIF_FORMAT_LONG:
{
const unsigned char *data = entry->data;
- size_t k, len = strlen(val);
+ size_t k, len = strlen(val), sizeleft;
+
+ sizeleft = entry->size;
for(k=0; k<entry->components; k++) {
+ if (sizeleft < 4)
+ break;
vl = exif_get_long (data, entry->order);
snprintf (val+len, maxlen-len, "%li", (long int) vl);
len = strlen(val);
data += 4;
+ sizeleft -= 4;
}
}
break;
@@ -455,5 +465,5 @@ mnote_pentax_entry_get_value (MnotePentaxEntry *entry,
break;
}
- return (val);
+ return val;
}

20
CVE-2017-7544.patch
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@ -1,20 +0,0 @@
Index: libexif/exif-data.c
===================================================================
RCS file: /cvsroot/libexif/libexif/libexif/exif-data.c,v
retrieving revision 1.131
diff -u -r1.131 exif-data.c
--- libexif/exif-data.c 12 Jul 2012 17:28:26 -0000 1.131
+++ libexif/exif-data.c 25 Jul 2017 21:34:06 -0000
@@ -255,6 +255,12 @@
exif_mnote_data_set_offset (data->priv->md, *ds - 6);
exif_mnote_data_save (data->priv->md, &e->data, &e->size);
e->components = e->size;
+ if (exif_format_get_size (e->format) != 1) {
+ /* e->format is taken from input code,
+ * but we need to make sure it is a 1 byte
+ * entity due to the multiplication below. */
+ e->format = EXIF_FORMAT_UNDEFINED;
+ }
}
}