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Update PackJPG to version 2.5h.

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Fix missing bounds checking in Delta2.
This commit is contained in:
Moinak Ghosh 2013-12-14 20:58:59 +05:30
parent a851bac247
commit dcc64d9e47
2 changed files with 27 additions and 13 deletions
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5
filters/delta2/delta2.c
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@ -91,8 +91,7 @@
/* /*
* Stride values to be checked. As of this implementation strides only * Stride values to be checked. As of this implementation strides only
* upto 8 bytes (uint64_t) are supported and common type lengths only * upto 8 bytes (uint64_t) are supported.
* are checked.
*/ */
#define NSTRIDES NSTRIDES_EXTRA #define NSTRIDES NSTRIDES_EXTRA
static uchar_t strides[NSTRIDES] = {2, 4, 8, 3, 5, 6, 7}; static uchar_t strides[NSTRIDES] = {2, 4, 8, 3, 5, 6, 7};
@ -480,7 +479,7 @@ delta2_decode(uchar_t *src, uint64_t srclen, uchar_t *dst, uint64_t *dstlen)
} else { } else {
stride = flags; stride = flags;
if (stride > STRIDE_MAX) { if (stride > STRIDE_MAX || stride < STRIDE_MIN) {
log_msg(LOG_ERR, 0, "DELTA2 Decode(delta): Invalid stride length: %d. Corrupt data.\n", stride); log_msg(LOG_ERR, 0, "DELTA2 Decode(delta): Invalid stride length: %d. Corrupt data.\n", stride);
return (-1); return (-1);
} }

27
filters/packjpg/packjpg.cpp
View file

@ -1,5 +1,5 @@
/* /*
packJPG v2.5g (09/14/2013) packJPG v2.5h (12/07/2013)
~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~
packJPG is a compression program specially designed for further packJPG is a compression program specially designed for further
@ -226,6 +226,9 @@ v2.5f (02/24/13) (public)
v2.5g (09/14/13) (public) v2.5g (09/14/13) (public)
- fixed a rare crash bug with manipulated JPEG files - fixed a rare crash bug with manipulated JPEG files
v2.5h (12/07/13) (public)
- added a warning for inefficient huffman coding (thanks to Moinak Ghosh)
Acknowledgements Acknowledgements
~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~
@ -254,7 +257,7 @@ For questions and bug reports:
____________________________________ ____________________________________
packJPG by Matthias Stirner, 09/2013 packJPG by Matthias Stirner, 12/2013
*/ */
#include <stdio.h> #include <stdio.h>
@ -672,10 +675,10 @@ INTERN unsigned char orig_set[ 8 ] = { 0 }; // store array for settings
----------------------------------------------- */ ----------------------------------------------- */
INTERN const unsigned char appversion = 25; INTERN const unsigned char appversion = 25;
INTERN const char* subversion = "g"; INTERN const char* subversion = "h";
INTERN const char* apptitle = "packJPG"; INTERN const char* apptitle = "packJPG";
INTERN const char* appname = "packjpg"; INTERN const char* appname = "packjpg";
INTERN const char* versiondate = "09/14/2013"; INTERN const char* versiondate = "12/07/2013";
INTERN const char* author = "Matthias Stirner / Se"; INTERN const char* author = "Matthias Stirner / Se";
#if !defined(BUILD_LIB) #if !defined(BUILD_LIB)
INTERN const char* website = "http://www.elektronik.htw-aalen.de/packjpg/"; INTERN const char* website = "http://www.elektronik.htw-aalen.de/packjpg/";
@ -2462,6 +2465,12 @@ INTERN bool decode_jpeg( void )
&(htrees[ 1 ][ cmpnfo[cmp].huffdc ]), &(htrees[ 1 ][ cmpnfo[cmp].huffdc ]),
block ); block );
// check for non optimal coding
if ( ( eob > 1 ) && ( block[ eob - 1 ] == 0 ) ) {
sprintf( errormessage, "reconstruction of inefficient coding not supported" );
errorlevel = 1;
}
// fix dc // fix dc
block[ 0 ] += lastdc[ cmp ]; block[ 0 ] += lastdc[ cmp ];
lastdc[ cmp ] = block[ 0 ]; lastdc[ cmp ] = block[ 0 ];
@ -2523,6 +2532,12 @@ INTERN bool decode_jpeg( void )
&(htrees[ 1 ][ cmpnfo[cmp].huffdc ]), &(htrees[ 1 ][ cmpnfo[cmp].huffdc ]),
block ); block );
// check for non optimal coding
if ( ( eob > 1 ) && ( block[ eob - 1 ] == 0 ) ) {
sprintf( errormessage, "reconstruction of inefficient coding not supported" );
errorlevel = 1;
}
// fix dc // fix dc
block[ 0 ] += lastdc[ cmp ]; block[ 0 ] += lastdc[ cmp ];
lastdc[ cmp ] = block[ 0 ]; lastdc[ cmp ] = block[ 0 ];
@ -2590,7 +2605,7 @@ INTERN bool decode_jpeg( void )
if ( ( eob == cs_from ) && ( peobrun > 0 ) && if ( ( eob == cs_from ) && ( peobrun > 0 ) &&
( peobrun < hcodes[ 1 ][ cmpnfo[cmp].huffac ].max_eobrun - 1 ) ) { ( peobrun < hcodes[ 1 ][ cmpnfo[cmp].huffac ].max_eobrun - 1 ) ) {
sprintf( errormessage, sprintf( errormessage,
"reconstruction of non optimal coding not supported" ); "reconstruction of inefficient coding not supported" );
errorlevel = 1; errorlevel = 1;
} }
peobrun = eobrun; peobrun = eobrun;
@ -2630,7 +2645,7 @@ INTERN bool decode_jpeg( void )
if ( ( eob == cs_from ) && ( peobrun > 0 ) && if ( ( eob == cs_from ) && ( peobrun > 0 ) &&
( peobrun < hcodes[ 1 ][ cmpnfo[cmp].huffac ].max_eobrun - 1 ) ) { ( peobrun < hcodes[ 1 ][ cmpnfo[cmp].huffac ].max_eobrun - 1 ) ) {
sprintf( errormessage, sprintf( errormessage,
"reconstruction of non optimal coding not supported" ); "reconstruction of inefficient coding not supported" );
errorlevel = 1; errorlevel = 1;
} }