The read_boot function in boot.c in dosfstools before 4.0 allows attackers to cause a denial of service (crash) via a crafted filesystem, which triggers a heap-based buffer overflow in the (1) read_fat function or an out-of-bounds heap read in (2) get_fat function.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| http://lists.opensuse.org/opensuse-updates/2016-06/msg00001.html | vendor advisory |
| https://github.com/dosfstools/dosfstools/issues/25 | patch vendor advisory |
| https://blog.fuzzing-project.org/44-dosfstools-fsck.vfat-Several-invalid-memory-accesses.html | patch |
| http://www.ubuntu.com/usn/USN-2986-1 | vendor advisory |
| https://github.com/dosfstools/dosfstools/issues/26 | patch vendor advisory |
| http://lists.opensuse.org/opensuse-updates/2016-09/msg00014.html | vendor advisory |
| http://www.securityfocus.com/bid/90311 | vdb entry |
| https://github.com/dosfstools/dosfstools/commit/e8eff147e9da1185f9afd5b25948153a3b97cf52 | |
| https://lists.debian.org/debian-lts-announce/2020/05/msg00028.html | mailing list |