Vulnerabilities in pkg:golang/github.com/cloudflare/cloudflared
PACKAGECVE-2023-1314 is a HIGH (CVSS 7.5) cloudflared's installer has local privilege vulnerability (CWE-59: Improper Link Resolution Before File Access ('Link Following')) affecting Github.com/cloudflare/cloudflared libraries in the Go ecosystem. The issue involves cloudflared's installer has local privilege escalation vulnerability. Remediation is available by upgrading affected packages to version 0.0.0-20230313153246-f686da832f85.
pkg:golang/github.com/cloudflare/cloudflared
Vulnerability advisories affecting package pkg:golang/github.com/cloudflare/cloudflared. Select an advisory below to view technical details or fixes.
| Advisory ID | CVE / NVD | Severity | Summary |
|---|---|---|---|
| GHSA-7mjv-x3jf-545x | CVE-2023-1314 | HIGH | cloudflared's Installer has Local Privilege Escalation Vulnerability |
| GHSA-hgwp-4vp4-qmm2 | CVE-2020-24356 | HIGH | Local Privilege Escalation in cloudflared |
CVE-2023-1314 at a Glance
Security Impact
CVSS: 7.5
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:H).
How to Fix CVE-2023-1314
To remediate this vulnerability, upgrade all affected Github.com/cloudflare/cloudflared 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/cloudflare/cloudflared to 0.0.0-20230313153246-f686da832f85
Run the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for github.com/cloudflare/cloudflared
How to Check if You Are Affected
To determine whether your application is affected by CVE-2023-1314, inspect your project dependencies for Github.com/cloudflare/cloudflared:
inspect dependencies for github.com/cloudflare/cloudflared
Analyze the terminal output to locate any version of Github.com/cloudflare/cloudflared in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.0.0-20230313153246-f686da832f85), 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-59: Improper Link Resolution Before File Access ('Link Following'), where the product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource. In Github.com/cloudflare/cloudflared, 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-2023-1314 Affected Github.com/cloudflare/cloudflared Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
github.com/cloudflare/cloudflared
|
Go |
< 0.0.0-20230313153246-f686da832f85
|
0.0.0-20230313153246-f686da832f85
|
References
Frequently Asked Questions
What is CVE-2023-1314?
Which Github.com/cloudflare/cloudflared versions are affected?
What version fixes CVE-2023-1314?
Is github.com/cloudflare/cloudflared affected?
What is the CVSS score of CVE-2023-1314?
What CWE is associated with CVE-2023-1314?
How can I check Go dependencies for CVE-2023-1314?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-7mjv-x3jf-545x",
"modified" : "2023-03-21T22:32:50Z",
"published" : "2023-03-21T22:32:50Z",
"aliases" : [ "CVE-2023-1314" ],
"summary" : "cloudflared's Installer has Local Privilege Escalation Vulnerability",
"details" : "### Impact\n\nA vulnerability has been discovered in cloudflared's installer (<= 2023.3.0) for Windows 32-bits devices that allows a local attacker with no administrative permissions to escalate their privileges on the affected device. This vulnerability exists because the MSI installer used by cloudflared relied on a world-writable directory.\n\nAn attacker with local access to the device (without Administrator rights) can use symbolic links to trick the MSI installer into deleting files in locations that the attacker would otherwise have no access to. By creating a symlink from the world-writable directory to the target file, the attacker can manipulate the MSI installer's repair functionality to delete the target file during the repair process.\n\nExploitation of this vulnerability could allow an attacker to delete important system files or replace them with malicious files, potentially leading to the affected device being compromised.\n\n**The cloudflared client itself is not affected by this vulnerability, only the installer for 32-bit Windows devices.**\n\n### Patches\nA new installer was released as part of version 2023.3.1, corresponding to pseudoversion 0.0.0-20230313153246-f686da832f85 on pkg.go.dev. Users are encouraged to remove old installers from their systems.\n\n### References\n[Cloudflared Releases](https://github.com/cloudflare/cloudflared/releases)",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:H"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/cloudflare/cloudflared"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "0.0.0-20230313153246-f686da832f85"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/cloudflare/cloudflared/security/advisories/GHSA-7mjv-x3jf-545x"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-1314"
}, {
"type" : "WEB",
"url" : "https://github.com/cloudflare/cloudflared/commit/9c15f31d003bebfbe6467c2b42972df3e7c9b886"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/cloudflare/cloudflared"
}, {
"type" : "WEB",
"url" : "https://github.com/cloudflare/cloudflared/releases"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-59" ],
"severity" : "HIGH",
"github_reviewed" : true,
"github_reviewed_at" : "2023-03-21T22:32:50Z",
"nvd_published_at" : "2023-03-21T12:15:00Z"
}
}