CVE-2021-3139 Information

Description

In Open-iSCSI tcmu-runner 1.3.x 1.4.x and 1.5.x through 1.5.2 xcopy_locate_udev in tcmur_cmd_handler.c lacks a check for transport-layer restrictions allowing remote attackers to read or write files via directory traversal in an XCOPY request. For example an attack can occur over a network if the attacker has access to one iSCSI LUN. NOTE: relative to CVE-2020-28374 this is a similar mistake in a different algorithm.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Reference

https://bugzilla.suse.com/show_bug.cgi?id=1178372 https://www.openwall.com/lists/oss-security/2021/01/12/12 https://bugzilla.suse.com/attachment.cgi?id=844938 https://github.com/open-iscsi/tcmu-runner/pull/644 http://www.openwall.com/lists/oss-security/2021/01/13/5

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

NONE

Base Severity

8.1