CVE-2020-28991: Github.com/go gitea/gitea Improper Access Control Vulnerability
CRITICALCVE-2020-28991 is a CRITICAL (CVSS 9.8) improper access control vulnerability (CWE-284: Improper Access Control) affecting Github.com/go gitea/gitea libraries in the Go ecosystem. The issue involves improper access control in gitea. Remediation is available by upgrading affected packages to version 1.12.6.
CVE-2020-28991 at a Glance
Security Impact
CVSS: 9.8
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
How to Fix CVE-2020-28991
To remediate this vulnerability, upgrade all affected Github.com/go gitea/gitea dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Upgrade github.com/go-gitea/gitea to 1.12.6Run the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for github.com/go-gitea/giteaHow to Check if You Are Affected
To determine whether your application is affected by CVE-2020-28991, inspect your project dependencies for Github.com/go gitea/gitea:
inspect dependencies for github.com/go-gitea/giteaAnalyze the terminal output to locate any version of Github.com/go gitea/gitea in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.12.6), your application is affected.
Note: Verify declared build manifests and deployed runtime container environments.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-284: Improper Access Control, where the product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. In Github.com/go gitea/gitea, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2020-28991 Affected Github.com/go gitea/gitea Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
github.com/go-gitea/gitea
|
Go |
≥ 0.9.99
< 1.12.6
|
1.12.6
|
References
Frequently Asked Questions
What is CVE-2020-28991?
Which Github.com/go gitea/gitea versions are affected?
What version fixes CVE-2020-28991?
Is github.com/go-gitea/gitea affected?
What is the CVSS score of CVE-2020-28991?
What CWE is associated with CVE-2020-28991?
How can I check Go dependencies for CVE-2020-28991?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-r7h7-chh4-5rvm",
"modified" : "2024-04-24T20:56:53Z",
"published" : "2024-04-24T20:56:53Z",
"aliases" : [ "CVE-2020-28991" ],
"summary" : "Improper Access Control in Gitea",
"details" : "Gitea 0.9.99 through 1.12.x before 1.12.6 does not prevent a git protocol path that specifies a TCP port number and also contains newlines (with URL encoding) in ParseRemoteAddr in modules/auth/repo_form.go.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/go-gitea/gitea"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0.9.99"
}, {
"fixed" : "1.12.6"
} ]
} ]
} ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-28991"
}, {
"type" : "WEB",
"url" : "https://github.com/go-gitea/gitea/pull/13525"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/go-gitea/gitea"
}, {
"type" : "WEB",
"url" : "https://github.com/go-gitea/gitea/releases/tag/v1.12.6"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-284" ],
"severity" : "CRITICAL",
"github_reviewed" : true,
"github_reviewed_at" : "2024-04-24T20:56:53Z",
"nvd_published_at" : null
}
}