PT-2017-15038 · Open Iscsi+1 · Open-Iscsi+1

Published 2017-12-22 · Updated 2018-12-21 · CVE-2017-17840

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Open-iSCSI versions prior to 2.0.876

Description A local attacker can cause the iscsiuio server to abort or potentially execute code by sending messages with incorrect lengths. This is due to a lack of checking, which can lead to buffer overflows. The process iscsid broadcast function in iscsiuio/src/unix/iscsid ipc.c does not validate the payload length before a write operation.

Recommendations For Open-iSCSI versions prior to 2.0.876, update to version 2.0.876 or later to resolve the issue. As a temporary workaround, consider restricting access to the iscsiuio server to minimize the risk of exploitation.

Fix

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

ALT-PU-2018-2938

CVE-2017-17840

Affected Products

Alt Linux

Open-Iscsi

References · 12

• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-17840 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2017-17840 · Vendor Advisory
• https://errata.altlinux.org/ALT-PU-2018-2938 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2017-17840 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2017-17840 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2017-17840 · Security Note
• https://ubuntu.com/security/CVE-2017-17840 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2017-17840 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2017-17840 · Security Note
• https://bugzilla.opensuse.org/show_bug.cgi?id=1072312 · Note
• https://packages.altlinux.org/ru/vuln/CVE-2017-17840 · Note
• http://openwall.com/lists/oss-security/2017/12/13/2 · Note