Double free in i18n/zonemeta.cpp in International Components for Unicode (ICU) for C/C++ through 59.1 allows remote attackers to execute arbitrary code via a crafted string, aka a redundant UVector entry clean up function call issue.
Weakness
The product calls free() twice on the same memory address.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| International_components_for_unicode | Icu-project | * | 59.1 (including) |
| Icu | Ubuntu | artful | * |
| Icu | Ubuntu | devel | * |
| Icu | Ubuntu | esm-infra-legacy/trusty | * |
| Icu | Ubuntu | esm-infra/xenial | * |
| Icu | Ubuntu | trusty | * |
| Icu | Ubuntu | trusty/esm | * |
| Icu | Ubuntu | xenial | * |
| Icu | Ubuntu | zesty | * |
Potential Mitigations
References
- http://bugs.icu-project.org/trac/changeset/40324/trunk/icu4c/source/i18n/zonemeta.cpp
- http://www.sourcebrella.com/blog/double-free-vulnerability-international-components-unicode-icu/
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
- http://bugs.icu-project.org/trac/changeset/40324/trunk/icu4c/source/i18n/zonemeta.cpp
- http://www.sourcebrella.com/blog/double-free-vulnerability-international-components-unicode-icu/
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html