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High severity · published Nov 3, 2023
CVE-2023-5088
A bug in QEMU could cause a guest I/O operation otherwise addressed to an arbitrary disk offset to be targeted to offset 0 instead (potentially overwriting the VM's boot code)
7.0
CVSS
0.2%
EPSS
No
On KEV
Description
A bug in QEMU could cause a guest I/O operation otherwise addressed to an arbitrary disk offset to be targeted to offset 0 instead (potentially overwriting the VM's boot code). This could be used, for example, by L2 guests with a virtual disk (vdiskL2) stored on a virtual disk of an L1 (vdiskL1) hypervisor to read and/or write data to LBA 0 of vdiskL1, potentially gaining control of L1 at its next reboot.
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 14% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EL
Enterprise Linux · Redhat
8.0; 8.0; 9.0 · source: NVD
QE
Qemu · Qemu
before 8.2.0 · source: NVD
Affected product
QE
Qemu
Qemu
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-5088
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-5088
access.redhat.com
https://access.redhat.com/errata/RHSA-2024:2135
access.redhat.com
https://access.redhat.com/errata/RHSA-2024:2962
Third Party Advisory
https://access.redhat.com/security/cve/CVE-2023-5088
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2247283
Mailing List
https://lore.kernel.org/all/20230921160712.99521-1-simon.rowe@nutanix.com/T/
lists.debian.org
https://lists.debian.org/debian-lts-announce/2024/03/msg00012.html
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