Security Resilience

CVE-2023-1555

Gitlab 15.2.0 – 16.1.5

Published
01 September 2023
Modified
21 November 2024
CVSS Score v3.1 2.7
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N
EPSS Score 0.0046 38th percentile
Risk Priority 26 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2023-1555 is a low-severity Not Using Password Aging (CWE-262) vulnerability in Gitlab Gitlab. Its CVSS base score is 2.7 (Low).

Operationally, exploitation aligns with the MITRE ATT&CK technique Junk Data (T1001.001); ranked at the 38th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability Data

An issue has been discovered in GitLab affecting all versions starting from 15.2 before 16.1.5, all versions starting from 16.2 before 16.2.5, all versions starting from 16.3 before 16.3.1. A namespace-level banned user can access the API.

CWE(s)
CWE-262NVD-CWE-Other

Related Threats

MITRE ATT&CK Enterprise Techniques

T1001.001 Junk Data Command And Control
Adversaries may add junk data to protocols used for command and control to make detection more difficult.
attack.mitre.org →
T1008 Fallback Channels Command And Control
Adversaries may use fallback or alternate communication channels if the primary channel is compromised or inaccessible in order to maintain reliable command and control and to avoid data transfer thresholds.
attack.mitre.org →
T1011.001 Exfiltration Over Bluetooth Exfiltration
Adversaries may attempt to exfiltrate data over Bluetooth rather than the command and control channel.
attack.mitre.org →
T1021 Remote Services Lateral Movement
Adversaries may use [Valid Accounts](https://attack.
attack.mitre.org →
T1027.010 Command Obfuscation Stealth
Adversaries may obfuscate content during command execution to impede detection.
attack.mitre.org →
T1027.013 Encrypted/Encoded File Stealth
Adversaries may encrypt or encode files to obfuscate strings, bytes, and other specific patterns to impede detection.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-2022Same product: Gitlab Gitlab
CVE-2023-7028Same product: Gitlab Gitlab
CVE-2022-1162Same product: Gitlab Gitlab
CVE-2023-6477Same product: Gitlab Gitlab
CVE-2025-1754Same product: Gitlab Gitlab
CVE-2024-12303Same product: Gitlab Gitlab
CVE-2024-9164Same product: Gitlab Gitlab
CVE-2023-2485Same product: Gitlab Gitlab
CVE-2025-11246Same product: Gitlab Gitlab
CVE-2025-1110Same product: Gitlab Gitlab

Affected Assets

gitlab
gitlab
16.3.0 · 15.2.0 — 16.1.5 · 15.2.0 — 16.1.5 · 16.2 — 16.2.5

Mitigating Controls

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.AA-01 partial match
blocks

Credential management explicitly includes lifecycle controls such as password aging and expiration.

PR.AA-03 partial match
blocks

Authentication policy enforcement can include password-aging rules even though the example text only cites strength.

PR.AA-05 partial match
blocks

Access-authorization policy can embed password-aging requirements as part of entitlement rules.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.5.17 Authentication information partial match
degrades

Requires policies and procedures for managing authentication information including password lifecycle.

A.8.19 Installation of software on operational systems partial match
removes
A.8.26 Application security requirements partial match
removes

A.8.26 only requires that password aging (as one possible auth requirement) be identified and specified during requirements gathering; it never mandates implementation of the mechanism itself, so the flaw of its absence is not removed from the delivered product (contrast A.8.24 removes CWE-312 = full).

A.8.27 Secure system architecture and engineering principles partial match
removes
A.8.28 Secure coding partial match
removes
A.8.5 Secure authentication partial match
degrades

Specifies secure authentication mechanisms that commonly include password aging and rotation requirements.

References