CVE-2018-14633
No exploitation reported by the sources we read.
- Published2018-09-25
- Fixed in4.18.11 · 4.14.73 · 4.9.130 · 4.4.159 · 3.18.124 · 3.16.59
- WeaknessCWE-121 · CWE-787
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
A security flaw was found in the chap_server_compute_md5() function in the ISCSI target code in the Linux kernel in a way an authentication request from an ISCSI initiator is processed. An unauthenticated remote attacker can cause a stack buffer overflow and smash up to 17 bytes of the stack. The attack requires the iSCSI target to be enabled on the victim host. Depending on how the target's code was built (i.e. depending on a compiler, compile flags and hardware architecture) an attack may lead to a system crash and thus to a denial-of-service or possibly to a non-authorized access to data exported by an iSCSI target. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although we believe it is highly unlikely. Kernel versions 4.18.x, 4.14.x and 3.10.x are believed to be vulnerable.
Timeline
dates in UTC- 2018-09-2500:29CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 18:48 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2018-14633?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2018-14633?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 4.x | ≥ 4.15, < 4.18.11 | 4.18.11 | NVD |
| 4.x | ≥ 4.10, < 4.14.73 | 4.14.73 | NVD |
| 4.x | ≥ 4.5, < 4.9.130 | 4.9.130 | NVD |
| 4.4 | ≥ 3.19, < 4.4.159 | 4.4.159 | NVD |
| 3.x | ≥ 3.17, < 3.18.124 | 3.18.124 | NVD |
| 3.x | ≥ 3.1, < 3.16.59 | 3.16.59 | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 12.4 | = 12.04 | no fix published | NVD |
| 14.4 | = 14.04 | no fix published | NVD |
| 16.4 | = 16.04 | no fix published | NVD |
| 18.4 | = 18.04 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 8.0 | = 8.0 | no fix published | NVD |
| 9.0 | = 9.0 | no fix published | NVD |
5 more products in the sources.
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Fix
- Update Linux linux kernel to 4.18.11 · 4.14.73 · 4.9.130 · 4.4.159 · 3.18.124 · 3.16.59
Advisories and patches
- bugzilla.redhat.comPatch
- git.kernel.orgPatch · Vendor Advisory
- git.kernel.orgPatch · Vendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
- Published
- 2018-09-25
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2018-14633?
Is CVE-2018-14633 actively exploited?
What is the CVSS score for CVE-2018-14633?
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