CVE-2021-3139

Publication date 13 January 2021

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

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.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
tcmu	24.04 LTS noble	Vulnerable
	23.10 mantic	Ignored
	23.04 lunar	Ignored
	22.10 kinetic	Ignored
	22.04 LTS jammy	Vulnerable
	21.10 impish	Ignored
	21.04 hirsute	Ignored
	20.10 groovy	Fixed 1.5.2-5ubuntu0.20.10.1
	20.04 LTS focal	Fixed 1.5.2-5ubuntu0.20.04.1
	18.04 LTS bionic	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release

Notes

alexmurray

Related to CVE-2020-28374

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
tcmu	Upstream: b4a986b

Severity score breakdown

Parameter	Value
Base score	8.1 · High
Attack vector	Network
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	None
Vector	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

References

Related Ubuntu Security Notices (USN)

USN-4707-1
TCMU vulnerability
28 January 2021