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CVE-2019-5188

Published: 8 January 2020

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.

Priority

Medium

Cvss 3 Severity Score

6.7

Score breakdown

Status

Package Release Status
e2fsprogs
Launchpad, Ubuntu, Debian
bionic
Released (1.44.1-1ubuntu1.3)
disco
Released (1.44.6-1ubuntu0.2)
eoan
Released (1.45.3-4ubuntu2.1)
trusty
Released (1.42.9-3ubuntu1.3+esm2)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream
Released (1.45.5-1)
xenial
Released (1.42.13-1ubuntu1.2)
Patches:
upstream: https://git.kernel.org/pub/scm/fs/ext2/e2fsprogs.git/commit/?id=8dd73c149f418238f19791f9d666089ef9734dff
upstream: https://git.kernel.org/pub/scm/fs/ext2/e2fsprogs.git/commit/?id=71ba13755337e19c9a826dfc874562a36e1b24d3

Severity score breakdown

Parameter Value
Base score 6.7
Attack vector Local
Attack complexity Low
Privileges required High
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H