A code execution vulnerability exists in the directory rehashing functionality of E2fsprogs e2fsck 1.45.4. A specially crafted ext4 directory can cause an out-of-bounds write on the stack, resulting in code execution. An attacker can corrupt a partition to trigger this vulnerability.
https://talosintelligence.com/vulnerability_reports/TALOS-2019-0973
https://usn.ubuntu.com/4249-1/
http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00004.html
https://lists.debian.org/debian-lts-announce/2020/03/msg00030.html
https://lists.debian.org/debian-lts-announce/2020/07/msg00021.html
Source: MITRE
Published: 2020-01-08
Updated: 2022-05-12
Type: CWE-787
Base Score: 4.4
Vector: AV:L/AC:M/Au:N/C:P/I:P/A:P
Impact Score: 6.4
Exploitability Score: 3.4
Severity: MEDIUM
Base Score: 6.7
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 0.8
Severity: MEDIUM