CVE-2015-8872

The set_fat function in fat.c in dosfstools before 4.0 might allow attackers to corrupt a FAT12 filesystem or cause a denial of service (invalid memory read and crash) by writing an odd number of clusters to the third to last entry on a FAT12 filesystem, which triggers an "off-by-two error."

Score

CVSS 3.0 6.2 Medium

Status

Modified - cve@mitre.org

Published

2016-06-03

Last modified

2024-08-06

Weaknesses

CWE-189

Affected products

• Ubuntu Linux (Canonical)
• Dosfstools (Dosfstools Project)
• Leap (Opensuse)
• Opensuse (Opensuse)

References

• http://lists.opensuse.org/opensuse-updates/2016-06/msg00001.html
• http://lists.opensuse.org/opensuse-updates/2016-09/msg00014.html
• http://www.securityfocus.com/bid/90311
• http://www.ubuntu.com/usn/USN-2986-1
• https://blog.fuzzing-project.org/44-dosfstools-fsck.vfat-Several-invalid-memory-accesses.html
• https://github.com/dosfstools/dosfstools/commit/07908124838afcc99c577d1d3e84cef2dbd39cb7
• https://github.com/dosfstools/dosfstools/issues/12
• https://github.com/dosfstools/dosfstools/releases/tag/v4.0
• https://lists.debian.org/debian-lts-announce/2020/05/msg00028.html