Out-of-bounds read in QEMU - CVE-2023-4135

Vulnerability identifier: #VU84979

CSH Severity: Low

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2023-4135

CWE-ID: CWE-125

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote user to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition within the NVMe virtual device. A remote administrator can trigger an out-of-bounds read error and read contents of memory on the system.

QEMU
Ubuntu
qemu-system-mips (Ubuntu package)
qemu-system-s390x (Ubuntu package)
qemu-system-sparc (Ubuntu package)
qemu-system-ppc (Ubuntu package)
qemu-system-x86 (Ubuntu package)
qemu-system-x86-xen (Ubuntu package)
qemu (Ubuntu package)
qemu-system-misc (Ubuntu package)
qemu-system-x86-microvm (Ubuntu package)
qemu-system-arm (Ubuntu package)
qemu-system (Ubuntu package)
qemu-system-xen (Ubuntu package)

Install updates from vendor's website.

QEMU - update to 8.1.0
qemu-system-mips (Ubuntu package) - addressed in versions 1:4.2-3ubuntu6.28, 1:4.2-3ubuntu6.29, 1:6.2+dfsg-2ubuntu6.16, 1:6.2+dfsg-2ubuntu6.21, 1:7.2+dfsg-5ubuntu2.4, 1:8.0.4+dfsg-1ubuntu3.23.10.2
qemu-system-s390x (Ubuntu package) - addressed in versions 1:4.2-3ubuntu6.28, 1:4.2-3ubuntu6.29, 1:6.2+dfsg-2ubuntu6.16, 1:6.2+dfsg-2ubuntu6.21, 1:7.2+dfsg-5ubuntu2.4, 1:8.0.4+dfsg-1ubuntu3.23.10.2
qemu-system-sparc (Ubuntu package) - addressed in versions 1:4.2-3ubuntu6.28, 1:4.2-3ubuntu6.29, 1:6.2+dfsg-2ubuntu6.16, 1:6.2+dfsg-2ubuntu6.21, 1:7.2+dfsg-5ubuntu2.4, 1:8.0.4+dfsg-1ubuntu3.23.10.2
qemu-system-ppc (Ubuntu package) - addressed in versions 1:4.2-3ubuntu6.28, 1:4.2-3ubuntu6.29, 1:6.2+dfsg-2ubuntu6.16, 1:6.2+dfsg-2ubuntu6.21, 1:7.2+dfsg-5ubuntu2.4, 1:8.0.4+dfsg-1ubuntu3.23.10.2
qemu-system-x86 (Ubuntu package) - addressed in versions 1:4.2-3ubuntu6.28, 1:4.2-3ubuntu6.29, 1:6.2+dfsg-2ubuntu6.16, 1:6.2+dfsg-2ubuntu6.21, 1:7.2+dfsg-5ubuntu2.4, 1:8.0.4+dfsg-1ubuntu3.23.10.2
qemu-system-x86-xen (Ubuntu package) - addressed in versions 1:4.2-3ubuntu6.28, 1:4.2-3ubuntu6.29, 1:6.2+dfsg-2ubuntu6.16, 1:6.2+dfsg-2ubuntu6.21, 1:7.2+dfsg-5ubuntu2.4, 1:8.0.4+dfsg-1ubuntu3.23.10.2
qemu (Ubuntu package) - addressed in versions 1:4.2-3ubuntu6.28, 1:6.2+dfsg-2ubuntu6.16
qemu-system-misc (Ubuntu package) - addressed in versions 1:4.2-3ubuntu6.28, 1:4.2-3ubuntu6.29, 1:6.2+dfsg-2ubuntu6.16, 1:6.2+dfsg-2ubuntu6.21, 1:7.2+dfsg-5ubuntu2.4, 1:8.0.4+dfsg-1ubuntu3.23.10.2
qemu-system-x86-microvm (Ubuntu package) - addressed in versions 1:4.2-3ubuntu6.28, 1:4.2-3ubuntu6.29, 1:6.2+dfsg-2ubuntu6.16, 1:6.2+dfsg-2ubuntu6.21
qemu-system-arm (Ubuntu package) - addressed in versions 1:4.2-3ubuntu6.28, 1:4.2-3ubuntu6.29, 1:6.2+dfsg-2ubuntu6.16, 1:6.2+dfsg-2ubuntu6.21, 1:7.2+dfsg-5ubuntu2.4, 1:8.0.4+dfsg-1ubuntu3.23.10.2
qemu-system (Ubuntu package) - addressed in versions 1:4.2-3ubuntu6.28, 1:4.2-3ubuntu6.29, 1:6.2+dfsg-2ubuntu6.21, 1:7.2+dfsg-5ubuntu2.4, 1:8.0.4+dfsg-1ubuntu3.23.10.2
qemu-system-xen (Ubuntu package) - addressed in versions 1:7.2+dfsg-5ubuntu2.4, 1:8.0.4+dfsg-1ubuntu3.23.10.2

• https://access.redhat.com/security/cve/CVE-2023-4135
• https://bugzilla.redhat.com/show_bug.cgi?id=2229101
• https://www.zerodayinitiative.com/advisories/ZDI-CAN-21521
• https://security.netapp.com/advisory/ntap-20230915-0012/

• Out-of-bounds read in QEMU
• Ubuntu update for qemu
• Ubuntu update for qemu