CVE-2021-3139

HIGH
8.1
CVSS Score
Published: January 13, 2021 at 03:33 PM UTC
Updated: June 17, 2026 at 04:04 AM UTC
1 product affected across 1 vendorTcmu Runner

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Severity
HIGH8.1
Exploit prediction
EPSS 3%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

1.3.0 ≤ v ≤ 1.5.2

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (5)

Mailing Listx_refsource_MLISTMitigationThird Party Advisory
http://www.openwall.com/lists/oss-security/2021/01/13/5
x_refsource_MISCIssue TrackingThird Party Advisory
https://bugzilla.suse.com/attachment.cgi?id=844938
x_refsource_MISCIssue TrackingThird Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=1178372
x_refsource_CONFIRMPatchThird Party Advisory
https://github.com/open-iscsi/tcmu-runner/pull/644
x_refsource_MISCMailing ListThird Party Advisory
https://www.openwall.com/lists/oss-security/2021/01/12/12

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-22

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