Package: exiv2 Version: 0.24-4.1 Severity: grave Tags: security patch There is a buffer overflow condition with some AVI files. I am not fully sure but maybe it could be used for a code execution.
However, the bug is fixed upstream. See also report [0]. I extracted and tested the patch from upstream and added it to this report. This bug affects also many other packages that uses libexiv2. Namely geeqie and digikam. -- System Information: Debian Release: 8.0 APT prefers unstable APT policy: (800, 'unstable'), (110, 'experimental') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 3.17.5 (SMP w/8 CPU cores) Locale: LANG=de_DE, LC_CTYPE=de_DE (charmap=ISO-8859-1) (ignored: LC_ALL set to de_DE) Shell: /bin/sh linked to /bin/dash Init: sysvinit (via /sbin/init) Versions of packages exiv2 depends on: ii libc6 2.19-13 ii libexiv2-13 0.24-4.1 ii libgcc1 1:4.9.2-9 ii libstdc++6 4.9.2-9 exiv2 recommends no packages. exiv2 suggests no packages. -- no debconf information [0] http://dev.exiv2.org/issues/1002 -- Klaus Ethgen http://www.ethgen.ch/ pub 4096R/4E20AF1C 2011-05-16 Klaus Ethgen <[email protected]> Fingerprint: 85D4 CA42 952C 949B 1753 62B3 79D0 B06F 4E20 AF1C
>From ed36a4692058f745a06d87bdaf107bc43c7d2359 Mon Sep 17 00:00:00 2001
From: badola <badola@b7c8b350-86e7-0310-a4b4-de8f6a8f16a3>
Date: Thu, 19 Jun 2014 20:28:44 +0000
Subject: [PATCH] #960: Added a Buffer Overflow Fix in INFO tags of
RIFFVIDEO.CPP
git-svn-id: svn://dev.exiv2.org/svn/trunk@3264 b7c8b350-86e7-0310-a4b4-de8f6a8f16a3
---
src/riffvideo.cpp | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/src/riffvideo.cpp b/src/riffvideo.cpp
index 4545bc3..0dcd291 100644
--- a/src/riffvideo.cpp
+++ b/src/riffvideo.cpp
@@ -856,7 +856,7 @@ namespace Exiv2 {
void RiffVideo::infoTagsHandler()
{
- const long bufMinSize = 100;
+ const long bufMinSize = 10000;
DataBuf buf(bufMinSize);
buf.pData_[4] = '\0';
io_->seek(-12, BasicIo::cur);
@@ -879,10 +879,14 @@ namespace Exiv2 {
if(infoSize >= 0) {
size -= infoSize;
io_->read(buf.pData_, infoSize);
+ if(infoSize < 4)
+ buf.pData_[infoSize] = '\0';
}
if(tv)
xmpData_[exvGettext(tv->label_)] = buf.pData_;
+ else
+ continue;
}
io_->seek(cur_pos + size_external, BasicIo::beg);
} // RiffVideo::infoTagsHandler
--
2.1.4
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