In ImageMagick before 7.0.8-25, a memory leak exists in ReadSIXELImage in coders/sixel.c.
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 | * | 6.9.10-25 (excluding) |
| Imagemagick | Imagemagick | 7.0.0-0 (including) | 7.0.8-25 (excluding) |
| Imagemagick | Ubuntu | bionic | * |
| Imagemagick | Ubuntu | cosmic | * |
| Imagemagick | Ubuntu | devel | * |
| Imagemagick | Ubuntu | disco | * |
| Imagemagick | Ubuntu | esm-infra-legacy/xenial | * |
| Imagemagick | Ubuntu | esm-infra/bionic | * |
| Imagemagick | Ubuntu | esm-infra/xenial | * |
| Imagemagick | Ubuntu | xenial | * |
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://lists.opensuse.org/opensuse-security-announce/2019-04/msg00034.html
- http://www.securityfocus.com/bid/106849
- https://github.com/ImageMagick/ImageMagick/commit/748a03651e5b138bcaf160d15133de2f4b1b89ce
- https://github.com/ImageMagick/ImageMagick/issues/1452
- https://usn.ubuntu.com/4034-1/
- https://www.debian.org/security/2020/dsa-4712
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00034.html
- http://www.securityfocus.com/bid/106849
- https://github.com/ImageMagick/ImageMagick/commit/748a03651e5b138bcaf160d15133de2f4b1b89ce
- https://github.com/ImageMagick/ImageMagick/issues/1452
- https://usn.ubuntu.com/4034-1/
- https://www.debian.org/security/2020/dsa-4712