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CVE-2017-17840

7.8 · HIGH

An issue was discovered in Open-iSCSI through 2.0.875.

Published Dec 27, 2017CWE-119EPSS 0.45%

Overview

CVE-2017-17840 is a high-severity vulnerability. It was published on December 27, 2017 and has a CVSS 3.0 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.0 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.openwall.com/lists/oss-security/2017/12/13/2Refbugzilla.opensuse.org/show_bug.cgi?id=1072312Refwww.openwall.com/lists/oss-security/2017/12/13/2Refbugzilla.opensuse.org/show_bug.cgi?id=1072312

How CyberStrike helps

Frequently asked questions

What is CVE-2017-17840?

CVE-2017-17840 is a high-severity vulnerability. It was published on December 27, 2017 and has a CVSS 3.0 base score of 7.8 (HIGH).

How severe is CVE-2017-17840?

This vulnerability has a CVSS 3.0 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2017-17840?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2017-17840?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2017-17840 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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