The chmd_init_decomp function in chmd.c in libmspack before 0.5 does not properly validate the reset interval, which allows remote attackers to cause a denial of service (divide-by-zero error and application crash) via a crafted CHM file.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Libmspack | Libmspack_project | * | 0.4-3 (including) |
| Libmspack | Ubuntu | esm-infra-legacy/trusty | * |
| Libmspack | Ubuntu | trusty | * |
| Libmspack | Ubuntu | trusty/esm | * |
| Libmspack | Ubuntu | upstream | * |
| Libmspack | Ubuntu | utopic | * |
References
- http://anonscm.debian.org/cgit/collab-maint/libmspack.git/diff/debian/patches/fix-division-by-zero.patch?id=a25bb144795e526748b57884daf365732c7e2295
- http://openwall.com/lists/oss-security/2015/02/03/11
- http://www.securityfocus.com/bid/72488
- https://bugs.debian.org/774725
- http://anonscm.debian.org/cgit/collab-maint/libmspack.git/diff/debian/patches/fix-division-by-zero.patch?id=a25bb144795e526748b57884daf365732c7e2295
- http://openwall.com/lists/oss-security/2015/02/03/11
- http://www.securityfocus.com/bid/72488
- https://bugs.debian.org/774725