In ImageMagick 7.0.8-36 Q16, there is a memory leak in the function SVGKeyValuePairs of coders/svg.c, which allows an attacker to cause a denial of service via a crafted image file.
Weakness
The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Imagemagick | Imagemagick | 7.0.8-36-q16 (including) | 7.0.8-36-q16 (including) |
| Imagemagick | Ubuntu | cosmic | * |
| Imagemagick | Ubuntu | devel | * |
| Imagemagick | Ubuntu | disco | * |
| Imagemagick | Ubuntu | trusty | * |
Potential Mitigations
- Choose a language or tool that provides automatic memory management, or makes manual memory management less error-prone.
- For example, glibc in Linux provides protection against free of invalid pointers.
- When using Xcode to target OS X or iOS, enable automatic reference counting (ARC) [REF-391].
- To help correctly and consistently manage memory when programming in C++, consider using a smart pointer class such as std::auto_ptr (defined by ISO/IEC ISO/IEC 14882:2003), std::shared_ptr and std::unique_ptr (specified by an upcoming revision of the C++ standard, informally referred to as C++ 1x), or equivalent solutions such as Boost.
References
- http://www.securityfocus.com/bid/107645
- https://github.com/ImageMagick/ImageMagick/issues/1533
- https://usn.ubuntu.com/4034-1/
- https://www.debian.org/security/2020/dsa-4712
- http://www.securityfocus.com/bid/107645
- https://github.com/ImageMagick/ImageMagick/issues/1533
- https://usn.ubuntu.com/4034-1/
- https://www.debian.org/security/2020/dsa-4712