Stack-based buffer overflow in Tar - CVE-2023-39804

Vulnerability identifier: #VU84035

CSH Severity: High

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

CVE-ID: CVE-2023-39804

CWE-ID: CWE-121

Exploitation vector: Remote access

Exploit availability: No public exploit available

Affected software:
Tar
Amazon Linux AMI
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Server 12
SUSE Manager Server
SUSE Manager Proxy
SUSE Manager Retail Branch Server
SUSE Linux Enterprise Micro
SUSE Linux Enterprise Micro for Rancher
openSUSE Leap Micro
Ubuntu
Basesystem Module
openSUSE Leap
openEuler
SmartFabric Storage Software
LANTIME Operating System Firmware (LTOS)
IBM Watson Speech Services Cartridge for IBM Cloud Pak for Data
RecoverPoint for Virtual Machines
SmartFabric OS10
ObjectScale
Enterprise SONiC
Storage Resource Manager
tar (Ubuntu package)
tar-debugsource
tar-debuginfo
tar-lang
tar
tar-help
tar-rmt
tar-rmt-debuginfo
tar-tests
tar-tests-debuginfo
tar-doc
tar-backup-scripts
Dell EMC Storage Monitoring and Reporting (SMR)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within the xattr_decoder() function in xheader.c. A remote attacker can trick the victim to open a specially crafted tar/pax archive with an overly long xattr key, trigger a stack-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Install updates from vendor's website.

• https://git.savannah.gnu.org/cgit/tar.git/commit/?id=a339f05cd269013fa133d2f148d73f6f7d4247e4