Bug 1903232 (CVE-2020-29367)

Summary:	CVE-2020-29367 blosc: heap-based buffer overflow when there is a lack of space to write compressed data
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	bmontgom, dbecker, dramseur, eparis, jburrell, jhunter, jjoyce, jminter, jokerman, jschluet, kmitts, lhh, lpeer, mburns, mgala, mjudeiki, nstielau, sclewis, slinaber, slong, sponnaga, thibault, zbyszek
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A heap-based buffer overflow vulnerability was found in the blosc library. Depending on how the library is used, if there is a lack of space to write compressed data, an attacker can exploit this flaw to crash the program or potentially execute arbitrary code. The highest threat from this vulnerability is to confidentiality and system availability.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-02-09 22:09:41 UTC	Type:	---
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:	1903233, 1903234, 1903235, 1903871, 1903872
Bug Blocks:	1903237

Description Guilherme de Almeida Suckevicz 2020-12-01 16:53:51 UTC

blosc2.c in Blosc C-Blosc2 through 2.0.0.beta.5 has a heap-based buffer overflow when there is a lack of space to write compressed data.

Reference:
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26442

Upstream patch:
https://github.com/Blosc/c-blosc2/commit/c4c6470e88210afc95262c8b9fcc27e30ca043ee

Comment 1 Guilherme de Almeida Suckevicz 2020-12-01 16:54:17 UTC

Created blosc tracking bugs for this issue:

Affects: epel-all [bug 1903234]
Affects: fedora-all [bug 1903233]
Affects: openstack-rdo [bug 1903235]

Comment 5 Summer Long 2021-02-09 05:36:06 UTC

Statement:

OpenShift Container Platform (OCP) 4 temporarily shipped one version of the blosc package in OCP 4.3.0. Updates to the blosc package, which is used in the ironic-hardware-inventory-recorder-image container are consumed from OpenStack Platform 16 repositories.

In Red Hat OpenStack Platform, because the flaw has a lower impact and the fix would require a substantial amount of development, no update will be provided at this time for the RHOSP blosc package.

Comment 6 Product Security DevOps Team 2021-02-09 22:09:41 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2020-29367