Permissions, Privileges, and Access Controls in targetcli-fb - CVE-2020-10699

Vulnerability identifier: #VU27047

CSH Severity: Low

CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2020-10699

CWE-ID: CWE-264

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to improper privilege management the socket used by targetclid was world-writable. A local user can use this flaw to modify the iSCSI configuration and gain elevated privileges on the target system. 

targetcli-fb
Gentoo Linux
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for ARM 64
targetcli (Alpine package)
tcpreplay (Alpine package)
targetcli (Red Hat package)

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

targetcli (Alpine package) - update to 2.1.53-r0
tcpreplay (Alpine package) - update to 4.3.3-r0
targetcli (Red Hat package) - update to 2.1.51-4.el8_2

• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10699
• https://github.com/open-iscsi/targetcli-fb/issues/162
• https://github.com/open-iscsi/targetcli-fb/commit/1e5d2dda904a50c236a03c420db251d94a67e5da
• https://github.com/open-iscsi/targetcli-fb/pull/164

• Privilege escalation in targetcli-fb
• Red Hat Enterprise Linux 8 update for targetcli
• Permissions, Privileges, and Access Controls in targetcli (Alpine package)
• Gentoo update for targetcli-fb