High severity · published Jul 24, 2023
CVE-2023-1386
A flaw was found in the 9p passthrough filesystem (9pfs) implementation in QEMU
7.8
CVSS
0.2%
EPSS
No
On KEV
Description
A flaw was found in the 9p passthrough filesystem (9pfs) implementation in QEMU. When a local user in the guest writes an executable file with SUID or SGID, none of these privileged bits are correctly dropped. As a result, in rare circumstances, this flaw could be used by malicious users in the guest to elevate their privileges within the guest and help a host local user to elevate privileges on the host.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
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 15% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FE
Fedora · Fedoraproject
38 · source: NVD
QE
Qemu · Qemu
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-1386
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-1386
Third Party Advisory
https://access.redhat.com/security/cve/CVE-2023-1386
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2223985
github.com
https://github.com/advisories/GHSA-ppj8-867g-rgjr
github.com
https://github.com/v9fs/linux/issues/29
security.netapp.com
https://security.netapp.com/advisory/ntap-20230831-0005/
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