What’s Vulnerable › Vulnerabilities

CVE-2021-3139

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-01-13 · updated 2026-06-17
• Weakness: CWE-22

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 products

• Tcmu-Runner Project Tcmu-Runner: from 1.3.0 through 1.5.2

References

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

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