CVE-2017-17840

Name: CVE-2017-17840
Creator: NVD / NIST
Published: 2017-12-27T17:08:19.623+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.45%

Last modified Jun 17, 2026

CVE-2017-17840 is a vulnerability of currently unknown severity. An issue was discovered in Open-iSCSI through 2.0.875. A local attacker can cause the iscsiuio server to abort or potentially execute code by sending messages with incorrect lengths, which (due to lack of checking) can lead to buffer overflows, and result in aborts (with overflow checking enabled) or code execution. EPSS estimates a 0.45% chance of exploitation in the next 30 days.

Description

An issue was discovered in Open-iSCSI through 2.0.875. A local attacker can cause the iscsiuio server to abort or potentially execute code by sending messages with incorrect lengths, which (due to lack of checking) can lead to buffer overflows, and result in aborts (with overflow checking enabled) or code execution. The process_iscsid_broadcast function in iscsiuio/src/unix/iscsid_ipc.c does not validate the payload length before a write operation.

Metrics

EPSS Probability

0.45%

35.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions
Open-Iscsi Project	Open-Iscsi	<= 2.0.875

References

http://www.openwall.com/lists/oss-security/2017/12/13/2Mailing List, Third Party Advisory
https://bugzilla.opensuse.org/show_bug.cgi?id=1072312Issue Tracking, Third Party Advisory
http://www.openwall.com/lists/oss-security/2017/12/13/2Mailing List, Third Party Advisory
https://bugzilla.opensuse.org/show_bug.cgi?id=1072312Issue Tracking, Third Party Advisory

Timeline

Published: Dec 27, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-17840?

How severe is CVE-2017-17840?

Severity scoring for CVE-2017-17840 is pending analysis. The EPSS model estimates a 0.45% probability of exploitation in the next 30 days.

How do I fix CVE-2017-17840?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-17840?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST