GHSA-38r5-34mr-mvm7 — medium GitHub Advisory (CVE-2020-29662) in go/github.com/goharbor/harbor

Description

Impact

Javier Provecho, member of the TCCT (Telefonica Cloud & Cybersecurity Tech better known as ElevenPaths) SRE team discovered a vulnerability regarding Harbor’s v2 API.

The catalog’s registry v2 api is exposed on an unauthenticated path. The current catalog API path is served at the following path and it requires to be authenticated as an admin.

"GET /v2/_catalog"

However, the authorization can be bypassed by using the following path

"GET /v2/_catalog/"

Patches

If your product uses the affected releases of Harbor, update to either version v2.1.2 or v2.0.5 to fix this issue immediately

https://github.com/goharbor/harbor/releases/tag/v2.1.2
https://github.com/goharbor/harbor/releases/tag/v2.0.5

Workarounds

If you cannot access a patched release, it can be mitigated by disabling that API. For example, redirecting it to a 404 sink hole in the ingress.

For more information

If you have any questions or comments about this advisory, contact [email protected]
View our security policy at https://github.com/goharbor/harbor/security/policy
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-29662

Basic information

Type: reviewed
Severity: medium
Advisory on GitHub: Open advisory ↗
Repository advisory: Open repository advisory ↗
Source code: Not specified
Published (advisory): 2022-02-12 00:01:51 UTC
Updated: 2023-01-09 05:05:17 UTC
GitHub reviewed: 2021-05-21 19:00:31 UTC

Score	Percentile
0.24%	46.23%

CVSS Scores

Base score	Version	Severity	Vector
5.3	3.1	—	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:L) Some sensitive info could get out, but not a total data dump. Integrity (I:N) Data isn’t meaningfully altered or forged. Availability (A:N) Service keeps running; no real outage angle.

Identifiers

Type	Value
GHSA	GHSA-38r5-34mr-mvm7 ↗
CVE	CVE-2020-29662 ↗

CWEs

CWE id	Name
CWE-287	Improper Authentication
CWE-319	Cleartext Transmission of Sensitive Information

Affected packages (2)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem	Package	Vulnerable range	First patched	Vulnerable functions
go	github.com/goharbor/harbor	< 2.0.5	2.0.5	—
go	github.com/goharbor/harbor	>= 2.1.0, < 2.1.2	2.1.2	—

"catalog's registry v2 api exposed on unauthenticated path in Harbor"