Heap-based buffer overflow in the verify_vbr_checksum function in exfatfsck in exfat-utils before 1.2.1 allows remote attackers to cause a denial of service (infinite loop) or possibly execute arbitrary code via a crafted filesystem.
https://security.gentoo.org/glsa/201612-31
https://github.com/relan/exfat/issues/5
https://github.com/relan/exfat/commit/2e86ae5f81da11f11673d0546efb525af02b7786
https://blog.fuzzing-project.org/25-Heap-overflow-and-endless-loop-in-exfatfsck-exfat-utils.html
http://www.securityfocus.com/bid/77307
http://www.openwall.com/lists/oss-security/2015/10/29/13
Source: Mitre, NVD
Published: 2017-03-27
Updated: 2025-04-20
Base Score: 6.8
Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P
Severity: Medium
Base Score: 7.8
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Severity: High
EPSS: 0.01251