State Issues in cURL - CVE-2023-27535

Vulnerability identifier: #VU73828

CSH Severity: Low

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

CVE-ID: CVE-2023-27535

CWE-ID: CWE-371

Exploitation vector: Remote access

Exploit availability: No public exploit available

Affected software:
cURL
Event Streams
VMware Tanzu Application Service for VMs
Isolation Segment
Gatekeeper Operator
VolSync
Migration Toolkit for Runtimes
Data Lakehouse
Service Telemetry Framework
cert-manager Operator for Red Hat OpenShift
IBM Spectrum Copy Data Management
Migration Toolkit for Virtualization
Red Hat Advanced Cluster Management for Kubernetes
Red Hat OpenShift Dev Spaces
Red Hat Advanced Cluster Security for Kubernetes
OpenShift Logging
Dell Secure Connect Gateway
IBM MQ
IBM QRadar WinCollect Agent
IBM MQ Operator
IBM MaaS360 Mobile Enterprise Gateway
IBM MaaS360 Cloud Extender Agent
IBM Safer Payments
IBM Security Verify Governance
IBM Robotic Process Automation
Amazon Linux AMI
Gentoo Linux
PowerSC
Oracle Linux
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Software Development Kit 12
SUSE CaaS Platform
SUSE Manager Server
SUSE Manager Retail Branch Server
SUSE Manager Proxy
SUSE Linux Enterprise Micro
SUSE Linux Enterprise Micro for Rancher
openSUSE Leap Micro
SUSE Enterprise Storage
IBM AIX
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for x86_64
Anolis OS
SUSE OpenStack Cloud Crowbar
SUSE OpenStack Cloud
SUSE Linux Enterprise Server 12 SP4 ESPOS
SUSE Linux Enterprise Server 12 SP4 LTSS
Slackware Linux
Ubuntu
SUSE Linux Enterprise High Performance Computing 15 SP1 LTSS
SUSE Linux Enterprise Server 15 SP1 LTSS
Basesystem Module
openSUSE Leap
openEuler
Fedora
Self Node Remediation Operator
Red Hat OpenShift Serverless
Multicluster Engine for Kubernetes
OpenShift Service Mesh
OpenShift Data Foundation (formerly OpenShift Container Storage)
OpenShift Container Platform for Windows Containers
VMware Tanzu Operations Manager
Windows Container Support for Red Hat OpenShift
Secondary Scheduler Operator for Red Hat OpenShift (OSSO)
OpenShift API for Data Protection (OADP)
Network Observability plugin for the Openshift Console
Telemetry Dashboard
Liquidware
IBM Engineering Requirements Management DOORS Next
Citrix Workspace App
Webex App VDI
cflinuxfs3
ObjectScale
IBM MaaS360 Base Module
MaaS360 PKI Certificate Module
MaaS360 Configuration Utility
IBM Cloud Pak for Watson AIOps
Platform Automation Toolkit
Storage Ceph
IBM supplied MQ Advanced container images
Storage Protect Plus Container Agent
EMC Cloud Tiering Appliance
Dell PowerProtect Cyber Recovery
Migration Toolkit for Containers
Red Hat OpenShift Container Platform
VMware Horizon Client
OpenShift Developer Tools and Services
LANTIME Operating System Firmware (LTOS)
Splunk Universal Forwarder
Splunk Enterprise
Cisco Jabber
Cisco Webex Meetings
curl (Ubuntu package)
libcurl3 (Ubuntu package)
libcurl3-nss (Ubuntu package)
libcurl3-gnutls (Ubuntu package)
libcurl4 (Ubuntu package)
libcurl4-debuginfo
curl
libcurl4
curl-debuginfo
libcurl4-32bit
curl-debugsource
libcurl4-debuginfo-32bit
libcurl-devel
libcurl4-32bit-debuginfo
curl (Red Hat package)
curl-minimal
curl-doc
libcurl-minimal
libcurl
curl-help
libcurl-devel-32bit
net-misc/curl
Red Hat OpenShift GitOps
IBM MaaS360 VPN Module

The vulnerability allows a remote attacker to gain unauthorized access to FTP server.

The vulnerability exists due to cURL will reuse a previously created FTP connection even when one or more options had been changed that could have made the effective user a very different one. A remote attacker can connect to the FTP server using credentials supplied by another user and gain access to otherwise restricted functionality.

The settings in questions are CURLOPT_FTP_ACCOUNT, CURLOPT_FTP_ALTERNATIVE_TO_USER, CURLOPT_FTP_SSL_CCC and CURLOPT_USE_SSL level.

Install updates from vendor's website.

• https://curl.haxx.se/docs/CVE-2023-27535.html