vmware-vcenter-attack

VMware vSphere / vCenter Server external attack matrix — version fingerprinting, the high-impact CVE chain (CVE-2021-21972 vRealize unauth file upload, CVE-2021-21985 vSAN plugin RCE, CVE-2022-22954 Workspace ONE SSTI, CVE-2023-20887 Aria RCE, CVE-2024-37085 ESXi AD bypass, CVE-2023-34048 vCenter DCERPC OOB write APT-exploited), default credentials, SSO configuration disclosure, vmdir LDAP enumeration, ESXi Open SLP RCE history. ONLY for vCenter / Workspace ONE / Aria instances exposed to the internet — internal-network vCenter is out of scope per the external-only boundary. Use when recon shows port 443 with vCenter banner, `/ui` redirect, `/websso/SAML2/Metadata`, or VMware product fingerprints.

Quality

85%

Does it follow best practices?

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Securityby

Critical

Do not install without reviewing

Quality

Content

77%Weight 40%Scale 1-5

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

Highly actionable and well-sequenced content with strong validation gating around destructive operations, anchored by executable probes and a clear CVE matrix. The main weakness is token efficiency: the inlined citation/reference block is long and date-heavy, and with no bundle files present, progressive disclosure stays monolithic.

Suggestions

Move the 'Disclosed CVEs & coordinated-disclosure citations' section (and its per-CVE URL lists) into a references/ file (e.g. CVE_REFERENCES.md) and link one level deep from SKILL.md to improve progressive_disclosure and conciseness.

Consolidate time-sensitive disclosure dates and patch-version strings into a single 'patch status / deprecation' table so they don't pad the procedural steps; keep the body focused on actions.

Trim redundant CVE summaries between the Step 2 matrix and the citation section to reduce token weight while preserving the actionable probe commands.

Dimension	Reasoning	Score
Conciseness	Largely efficient and free of basic-concept padding, but the ~90-line 'Disclosed CVEs' citation block and per-CVE reference URL lists add notable length, and time-sensitive dates/versions are woven throughout rather than isolated in a deprecated section — mostly efficient but could be tightened.	3 / 5
Actionability	Copy-paste-ready curl commands with concrete endpoints and explicit HTTP-code interpretations (405→vulnerable, 404→patched), plus a Stage A/B canary probing workflow, fully cover the common cases.	5 / 5
Workflow Clarity	A clearly sequenced Step 1-10 workflow with validation checkpoints (canary-in-band confirmation, 'Stop and report'), boundary checks, and destructive operations gated behind 'explicit RCE-attempt sign-off,' matching the explicit-validation anchor.	5 / 5
Progressive Disclosure	No bundle files exist and the body is well-sectioned with clear headers, but the large reference-style CVE citation section is inlined monolithically in SKILL.md rather than split into a one-level-deep reference file, leaving organization at the 'some structure but could be better' level.	3 / 5
	Total	16 / 20 Passed

Description

92%Weight 40%Scale 1-5

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

A strong, specific description that pairs concrete capability enumeration with an explicit 'Use when' trigger clause and a clear scope boundary. Slightly heavy on technical URL-path triggers versus natural user phrasing, but otherwise highly complete and distinctive.

Dimension	Reasoning	Score
Specificity	Lists multiple concrete actions — 'version fingerprinting,' 'default credentials,' 'SSO configuration disclosure,' 'vmdir LDAP enumeration,' 'ESXi Open SLP RCE' — with comprehensive CVE-by-CVE coverage, matching the 'lists multiple specific concrete actions' anchor.	5 / 5
Completeness	Explicitly answers both 'what' (the external attack matrix and enumerated techniques) and 'when' via a concrete 'Use when recon shows port 443 with vCenter banner, /ui redirect...' trigger clause, matching the top anchor.	5 / 5
Trigger Term Quality	Good trigger coverage ('vCenter banner,' 'port 443,' '/ui redirect,' '/websso/SAML2/Metadata,' 'VMware product fingerprints') but leans on technical URL paths over natural user phrasing and omits a few synonyms, sitting above the midpoint but short of fully comprehensive.	4 / 5
Distinctiveness Conflict Risk	Narrowed to a distinct VMware vCenter/Workspace ONE/Aria niche with an explicit external-only boundary ('internal-network vCenter is out of scope'), giving clear distinct triggers and minimal overlap with other skills.	5 / 5
	Total	19 / 20 Passed

Validation

93%

Warnings & errors only

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation — 15 / 16 Passed

Validation for skill structure

Criteria	Description	Result
frontmatter_unknown_keys	Unknown frontmatter key(s) found; consider removing or moving to metadata	Warning

	Total	15 / 16 Passed

Repository: elementalsouls/Claude-BugHunter
Path: skills/vmware-vcenter-attack/SKILL.md
Commit: 0ce18ba

Reviewed: 1 day ago

Table of Contents

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