Cyber Resilience

CVE-2018-17455

High

Published: 15 April 2023

Published
15 April 2023
Modified
06 February 2025
KEV Added
—
Patch
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CVSS Score v3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS Score 0.0016 36.7th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2018-17455 is a high-severity Authorization Bypass Through User-Controlled Key (CWE-639) vulnerability in Gitlab Gitlab. Its CVSS base score is 7.5 (High).

Operationally, ranked at the 36.7th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

An issue was discovered in GitLab Enterprise Edition before 11.1.7, 11.2.x before 11.2.4, and 11.3.x before 11.3.1. Attackers could obtain sensitive information about group names, avatars, LDAP settings, and descriptions via an insecure direct object reference to the "merge request…

more

approvals" feature.

CWE(s)
CWE-639

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

gitlab
gitlab
11.3.0 · ≤ 11.1.7 · ≤ 11.1.7 · 11.2.0 — 11.2.4

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

AC-24 Access Control Decisions
addresses: CWE-639

Per-request decision making makes it harder to bypass authorization using user-controlled keys without proper validation in the decision process.

AC-3 Access Enforcement
addresses: CWE-639

Consistent enforcement of approved authorizations makes bypassing via user-controlled keys ineffective.

References