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package/tiff: fix CVE-2022-22844

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LibTIFF 4.3.0 has an out-of-bounds read in _TIFFmemcpy in tif_unix.c in
certain situations involving a custom tag and 0x0200 as the second word
of the DE field.

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Fabrice Fontaine 2022-02-05 15:14:48 +01:00 committed by Peter Korsgaard
parent 9229054bd5
commit 7ec5f99b3a
2 changed files with 47 additions and 0 deletions
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43
package/tiff/0001-tiffset-fix-global-buffer-overflow-for-ASCII-tags.patch Normal file
View File

@ -0,0 +1,43 @@
From 03047a26952a82daaa0792957ce211e0aa51bc64 Mon Sep 17 00:00:00 2001
From: 4ugustus <wangdw.augustus@qq.com>
Date: Tue, 25 Jan 2022 16:25:28 +0000
Subject: [PATCH] tiffset: fix global-buffer-overflow for ASCII tags where
count is required (fixes #355)
[Retrieved from:
https://gitlab.com/libtiff/libtiff/-/commit/03047a26952a82daaa0792957ce211e0aa51bc64]
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
---
tools/tiffset.c | 16 +++++++++++++---
1 file changed, 13 insertions(+), 3 deletions(-)
diff --git a/tools/tiffset.c b/tools/tiffset.c
index 8c9e23c5..e7a88c09 100644
--- a/tools/tiffset.c
+++ b/tools/tiffset.c
@@ -146,9 +146,19 @@ main(int argc, char* argv[])
arg_index++;
if (TIFFFieldDataType(fip) == TIFF_ASCII) {
- if (TIFFSetField(tiff, TIFFFieldTag(fip), argv[arg_index]) != 1)
- fprintf( stderr, "Failed to set %s=%s\n",
- TIFFFieldName(fip), argv[arg_index] );
+ if(TIFFFieldPassCount( fip )) {
+ size_t len;
+ len = strlen(argv[arg_index]) + 1;
+ if (len > UINT16_MAX || TIFFSetField(tiff, TIFFFieldTag(fip),
+ (uint16_t)len, argv[arg_index]) != 1)
+ fprintf( stderr, "Failed to set %s=%s\n",
+ TIFFFieldName(fip), argv[arg_index] );
+ } else {
+ if (TIFFSetField(tiff, TIFFFieldTag(fip),
+ argv[arg_index]) != 1)
+ fprintf( stderr, "Failed to set %s=%s\n",
+ TIFFFieldName(fip), argv[arg_index] );
+ }
} else if (TIFFFieldWriteCount(fip) > 0
|| TIFFFieldWriteCount(fip) == TIFF_VARIABLE) {
int ret = 1;
--
GitLab

4
package/tiff/tiff.mk
View File

@ -11,6 +11,10 @@ TIFF_LICENSE_FILES = COPYRIGHT
TIFF_CPE_ID_VENDOR = libtiff
TIFF_CPE_ID_PRODUCT = libtiff
TIFF_INSTALL_STAGING = YES
# 0001-tiffset-fix-global-buffer-overflow-for-ASCII-tags.patch
TIFF_IGNORE_CVES += CVE-2022-22844
TIFF_CONF_OPTS = \
--disable-cxx \
--without-x