Package Instance

ImageMagick has infinite loop when writing IPTCTEXT leads to denial of service via crafted profile
A crafted profile contain invalid IPTC data may cause an infinite loop when writing it with `IPTCTEXT`.

ImageMagick has uninitialized pointer dereference in JBIG decoder
An uninitialized pointer dereference vulnerability exists in the JBIG decoder due to a missing check.

ImageMagick: Heap Buffer Over-read in WaveletDenoise when processing small images
A heap buffer over-read vulnerability occurs when processing an image with small dimension using the `-wavelet-denoise` operator.

```
==3693336==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x511000001280 at pc 0x5602c8b0cc75 bp 0x7ffcb105d510 sp 0x7ffcb105d500
READ of size 4 at 0x511000001280 thread T0
```

ImageMagick's failure to limit the depth of SVG file reads caused a DoS attack
Using Magick to read a malicious SVG file resulted in a DoS attack.

ImageMagick has heap buffer overflow in WriteXWDImage due to CARD32 arithmetic overflow in bytes_per_line calculation
A 32-bit unsigned integer overflow in the XWD (X Windows) encoder can cause an undersized heap buffer allocation. When writing a extremely large image an out of bounds heap write can occur.

```
=================================================================
==741961==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x5020000083dc at pc 0x56553b4c4245 bp 0x7ffd9d20fef0 sp 0x7ffd9d20fee0
WRITE of size 1 at 0x5020000083dc thread T0
```

ImageMagick has stack write buffer overflow in MNG encoder
A stack buffer overflow vulnerability exists in the MNG encoder. There is a bounds checks missing that could corrupting the stack with attacker-controlled data.

```
==2265506==ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7ffec4971310 at pc 0x55e671b8a072 bp 0x7ffec4970f70 sp 0x7ffec4970f68
WRITE of size 1 at 0x7ffec4971310 thread T0
```

ImageMagick releases an invalid pointer in BilateralBlur when memory allocation fails
The BilateralBlurImage method will allocate a set of double buffers inside AcquireBilateralTLS. But the last element in the set is not properly initialized. This will result in a release of an invalid pointer inside DestroyBilateralTLS when the memory allocation fails.

ImageMagick: Heap overflow in sun decoder on 32-bit systems may result in out of bounds write
An Integer Overflow vulnerability exists in the sun decoder. On 32-bit systems/builds, a carefully crafted image can lead to an out of bounds heap write.

```
=================================================================
==1967675==ERROR: AddressSanitizer: heap-buffer-overflow on address 0xf190b50e at pc 0x5eae8777 bp 0xffb0fdd8 sp 0xffb0fdd0
WRITE of size 1 at 0xf190b50e thread T0
```

ImageMagick's Security Policy Bypass through config/policy-secure.xml via "fd handler" leads to stdin/stdout access
The shipped “secure” security policy includes a rule intended to prevent reading/writing from standard streams:

```xml
<policy domain="path" rights="none" pattern="-"/>
```

However, ImageMagick also supports fd:<n> pseudo-filenames (e.g., fd:0, fd:1). This path form is not blocked by the secure policy templates, and therefore bypasses the protection goal of “no stdin/stdout”.

To resolve this, users can add the following change to their security policy.

```xml
<policy domain="path" rights="none" pattern="fd:*"/>
```

And this will also be included in ImageMagick's more secure policies by default.