Bug 1917446 (CVE-2020-29443) - CVE-2020-29443 QEMU: ide: atapi: OOB access while processing read commands
Summary: CVE-2020-29443 QEMU: ide: atapi: OOB access while processing read commands
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2020-29443
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: 1917447 1917449 1917450 1917451 1917452 1921387 1921405 1921409 1929009 1937852
Blocks: 1893745
TreeView+ depends on / blocked
 
Reported: 2021-01-18 14:03 UTC by Prasad Pandit
Modified: 2021-06-23 14:16 UTC (History)
25 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
An out-of-bounds read-access flaw was found in the ATAPI Emulator of QEMU. This issue occurs while processing the ATAPI read command if the logical block address(LBA) is set to an invalid value. A guest user may use this flaw to crash the QEMU process on the host resulting in a denial of service.
Clone Of:
Environment:
Last Closed: 2021-05-18 14:37:47 UTC

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2021:2322 0 None None None 2021-06-08 22:35:21 UTC
Red Hat Product Errata RHSA-2021:2529 0 None None None 2021-06-23 14:16:35 UTC

Description Prasad Pandit 2021-01-18 14:03:08 UTC 
An out-of-bounds read access issue was found in the ATAPI Emulator of QEMU. It occurs while processing ATAPI read command if logical block address(LBA) is set an invalid value. A guest user may use this flaw to crash the QEMU process on the host resulting in DoS scenario.

Upstream patch:
---------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2021-01/msg04255.html
  -> https://git.qemu.org/?p=qemu.git;a=commit;h=813212288970c39b1800f63e83ac6e96588095c6
Comment 1 Prasad Pandit 2021-01-18 14:03:16 UTC 
Acknowledgments:

Name: Wenxiang Qian (Tencent Blade Team)
Comment 2 Prasad Pandit 2021-01-18 14:04:12 UTC 
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1917447]
Comment 4 Prasad Pandit 2021-01-19 09:44:20 UTC 
External References:

https://www.openwall.com/lists/oss-security/2021/01/18/2
Comment 9 Product Security DevOps Team 2021-05-18 14:37:47 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-2020-29443
Comment 10 errata-xmlrpc 2021-05-18 14:51:52 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:1762 https://access.redhat.com/errata/RHSA-2021:1762
Comment 11 errata-xmlrpc 2021-06-08 22:35:17 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2021:2322 https://access.redhat.com/errata/RHSA-2021:2322
Comment 12 errata-xmlrpc 2021-06-23 14:16:28 UTC 
This issue has been addressed in the following products:

  Red Hat Virtualization 4 for Red Hat Enterprise Linux 7
  Red Hat Virtualization Engine 4.3

Via RHSA-2021:2529 https://access.redhat.com/errata/RHSA-2021:2529
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