Bug 2258913

Summary:	CVE-2024-0684 coreutils: heap overflow in split --line-bytes with very long lines [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Pádraig Brady <p>
Component:	coreutils	Assignee:	Lukáš Zaoral <lzaoral>
Status:	CLOSED ERRATA	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	39	CC:	eggert, jim, kdudka, mcascell, security-response-team
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	coreutils-9.3-5.fc39	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2024-01-23 00:58:31 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	2258948

Description Pádraig Brady 2024-01-18 00:35:48 UTC

Since coreutils 9.2 https://github.com/coreutils/coreutils/commit/40bf1591b
introduced a heap overflow issue, which can be triggered like:

    { printf '%131070s\n' ''; printf 'x\n'; printf '%131071s\n' ''; } > in
    split -C 131072 ---io=131072 in

That will dump core, but as with all heap overflows is a potential security issue.
I'll leave it up to you to determine whether a CVE is required.

There is already a patch upstream, but it's not flagged as a security issue,
in an abundance of caution, in case this issue in more security sensitive than first envisaged. The upstream patch is:
https://github.com/coreutils/coreutils/commit/c4c5ed8f4.patch

Comment 1 Lukáš Zaoral 2024-01-18 08:53:59 UTC

Thank you for letting us know, Pádraig!
I have to wait for the Security Response Team to finish the analysis.  When the analysis is done, I'll backport your patch to F39 and newer ASAP.

Comment 2 Fedora Update System 2024-01-18 15:02:28 UTC

FEDORA-2024-6b85e8848f has been submitted as an update to Fedora 39. https://bodhi.fedoraproject.org/updates/FEDORA-2024-6b85e8848f

Comment 3 Lukáš Zaoral 2024-01-18 16:32:06 UTC

FEDORA-2024-7e5ca38c70 has been submitted as an update to Fedora 40. https://bodhi.fedoraproject.org/updates/FEDORA-2024-7e5ca38c70

Comment 4 Fedora Update System 2024-01-19 18:04:13 UTC

FEDORA-2024-6b85e8848f has been pushed to the Fedora 39 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2024-6b85e8848f`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2024-6b85e8848f

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 5 Fedora Update System 2024-01-23 00:58:31 UTC

FEDORA-2024-6b85e8848f has been pushed to the Fedora 39 stable repository.
If problem still persists, please make note of it in this bug report.