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CVE-2021-3139 PUBLISHED

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.

EPSS 0.91% · 75.7th percentile

Risk Scores

EPSS Score
0.91%
75.7th percentile

Affected Products

VendorProductVersions
Ubuntu:22.04:LTStcmu0, 1.5.4-2, 1.5.2-6
Ubuntu:20.04:LTStcmu1.5.2-3, 1.5.2-4, 1.5.2-5
Ubuntu:25.10tcmu0, 1.5.4-9
Ubuntu:24.04:LTStcmu0, 1.5.4-4.1, 1.5.4-5

Timeline

References

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