iscsi-initiator-utils: Heap-based buffer overflow in process_iscsid_broadcast()
Published Dec 22, 2017
7.8
HIGHCVSS 3.0
EPSS 0.45%
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.
Affected products
No data.
- ≤ 2.0.875
No data.
Red Hat Enterprise Linux 5
iscsi-initiator-utils
Will not fix
Red Hat Enterprise Linux 6
iscsi-initiator-utils
Will not fix
Red Hat Enterprise Linux 7
iscsi-initiator-utils
Will not fix
Red Hat Enterprise Linux 8
iscsi-initiator-utils
Will not fix
Red Hat Enterprise Linux 9
iscsi-initiator-utils
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | iscsi-initiator-utils | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | iscsi-initiator-utils | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | iscsi-initiator-utils | Will not fix | n/a |
| Red Hat Enterprise Linux 8 | iscsi-initiator-utils | Will not fix | n/a |
| Red Hat Enterprise Linux 9 | iscsi-initiator-utils | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Red Hat Product Security has rated this issue as having Moderate security impact. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L
AV:L/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (8 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 0.45% (0.00445) | 36.43th | v5 (v2026.06.15) |
| Sep 20, 2026 | 0.45% (0.00445) | 38.07th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.04% (0.00042) | 5.06th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.10% (0.01102) | 53.65th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.00% (0.01005) | 17.93th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.58% (0.00584) | 13.34th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.58% (0.00584) | 0.00th | v1 |
References (6)
- http://www.openwall.com/lists/oss-security/2017/12/13/2 x_refsource_MISCMailing ListThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2017-17840 Vendor Advisory
- https://bugzilla.opensuse.org/show_bug.cgi?id=1072312 x_refsource_MISCIssue TrackingThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1529176 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2017-17840
- https://www.cve.org/CVERecord?id=CVE-2017-17840
| Link | Providers | Tags |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2017/12/13/2 | x_refsource_MISCMailing ListThird Party Advisory | |
| https://access.redhat.com/security/cve/CVE-2017-17840 | Vendor Advisory | |
| https://bugzilla.opensuse.org/show_bug.cgi?id=1072312 | x_refsource_MISCIssue TrackingThird Party Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1529176 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-17840 | ||
| https://www.cve.org/CVERecord?id=CVE-2017-17840 |
Change history (0)
No recorded changes yet.