Bug 1790048 (CVE-2019-5188) - CVE-2019-5188 e2fsprogs: Out-of-bounds write in e2fsck/rehash.c
Summary: CVE-2019-5188 e2fsprogs: Out-of-bounds write in e2fsck/rehash.c
Keywords:
Status: NEW
Alias: CVE-2019-5188
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1792193 1790049
Blocks: 1790051
TreeView+ depends on / blocked
 
Reported: 2020-01-11 14:47 UTC by Pedro Sampaio
Modified: 2020-01-17 09:26 UTC (History)
7 users (show)

Fixed In Version: e2fsprogs 1.45.5
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Description Pedro Sampaio 2020-01-11 14:47:02 UTC
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.

References:

https://talosintelligence.com/vulnerability_reports/TALOS-2019-0973

Upstream patches:

https://github.com/tytso/e2fsprogs/commit/8dd73c149f418238f19791f9d666089ef9734dff
https://github.com/tytso/e2fsprogs/commit/71ba13755337e19c9a826dfc874562a36e1b24d3

Comment 1 Pedro Sampaio 2020-01-11 14:47:20 UTC
Created e2fsprogs tracking bugs for this issue:

Affects: fedora-all [bug 1790049]


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