NULL pointer dereference in Vim - CVE-2023-1355

Vulnerability identifier: #VU74499

CSH Severity: Low

CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

CVE-ID: CVE-2023-1355

CWE-ID: CWE-476

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in within the class_object_index() function in vim9class.c in Vim. A remote attacker can perform a denial of service (DoS) attack.

Vim
Amazon Linux AMI
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Manager Proxy
SUSE Manager Retail Branch Server
SUSE Manager Server
SUSE Linux Enterprise Micro
SUSE Linux Enterprise Micro for Rancher
openSUSE Leap Micro
SUSE Linux Enterprise Server 12 SP2 BCL
Desktop Applications Module
Basesystem Module
openSUSE Leap
Fedora
ObjectScale
RecoverPoint for VMs
Dell EMC VxRail Appliance
vim
vim-data-common
vim-debuginfo
vim-debugsource
vim-small
vim-small-debuginfo
vim-data
gvim
gvim-debuginfo
xxd
Dell EMC NetWorker vProxy

Install update from vendor's website.

Vim - update to 9.0.1402
ObjectScale - update to 1.4.0
RecoverPoint for VMs - update to 6.0.SP1.P1
Dell EMC VxRail Appliance - update to 8.0.101
vim - update to 9.0.1403-1.76
vim - update to 9.0.1407-1.fc36
vim - addressed in versions 9.0.1443-150000.5.40.1, 9.0.1572-17.18.1
vim-data-common - addressed in versions 9.0.1443-150000.5.40.1, 9.0.1572-17.18.1
vim-debuginfo - addressed in versions 9.0.1443-150000.5.40.1, 9.0.1572-17.18.1
vim-debugsource - addressed in versions 9.0.1443-150000.5.40.1, 9.0.1572-17.18.1
vim-small - update to 9.0.1443-150000.5.40.1
vim-small-debuginfo - update to 9.0.1443-150000.5.40.1
vim-data - addressed in versions 9.0.1443-150000.5.40.1, 9.0.1572-17.18.1
gvim - addressed in versions 9.0.1443-150000.5.40.1, 9.0.1572-17.18.1
gvim-debuginfo - addressed in versions 9.0.1443-150000.5.40.1, 9.0.1572-17.18.1
xxd - update to 9.0.1443-150000.5.40.1
Dell EMC NetWorker vProxy - addressed in versions 19.9.0.4, 19.10

• https://github.com/vim/vim/commit/d13dd30240e32071210f55b587182ff48757ea46
• https://huntr.dev/bounties/4d0a9615-d438-4f5c-8dd6-aa22f4b716d9
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IE44W6WMMREYCW3GJHPSYP7NK2VT5NY6/

• Denial of service in Vim
• Amazon Linux AMI update for vim
• SUSE update for vim
• Multiple vulnerabilities in Dell EMC VxRail Appliance
• Fedora 36 update for vim
• SUSE update for vim
• Dell EMC NetWorker vProxy update for third-party components
• Amazon Linux AMI update for vim
• Multiple vulnerabilities in Dell ObjectScale
• Multiple vulnerabilities in Dell RecoverPoint for Virtual Machines