CVE-2023-32691

gost (GO Simple Tunnel) is a simple tunnel written in golang. Sensitive secrets such as passwords, token and API keys should be compared only using a constant-time comparison function. Untrusted input, sourced from a HTTP header, is compared directly with a secret. Since this comparison is not secure, an attacker can mount a side-channel timing attack to guess the password. As a workaround, this can be easily fixed using a constant time comparing function such as `crypto/subtle`'s `ConstantTimeCompare`.

CVSS v3 5.9 MEDIUM

5.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/ginuerzh/gost/blob/1c62376e0880e4094bd3731e06bd4f7842638f6a/auth.go#L46	Product
https://github.com/ginuerzh/gost/security/advisories/GHSA-qjrq-hm79-49ww	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:go_simple_tunnel_project:go_simple_tunnel:*:*:*:*:*:go:*:*

History

No history.

Information

Published : 2023-05-30 04:15

Updated : 2023-06-05 17:37

NVD link : CVE-2023-32691

Mitre link : CVE-2023-32691

CVE.ORG link : CVE-2023-32691

JSON object : View

Products Affected

go_simple_tunnel_project

go_simple_tunnel

CWE

CWE-203

Observable Discrepancy

{"id": "CVE-2023-32691", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.9, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 2.2}, {"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.9, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 4.2, "exploitabilityScore": 1.6}]}, "published": "2023-05-30T04:15:09.980", "references": [{"url": "https://github.com/ginuerzh/gost/blob/1c62376e0880e4094bd3731e06bd4f7842638f6a/auth.go#L46", "tags": ["Product"], "source": "security-advisories@github.com"}, {"url": "https://github.com/ginuerzh/gost/security/advisories/GHSA-qjrq-hm79-49ww", "tags": ["Exploit", "Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-203"}]}, {"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-203"}]}], "descriptions": [{"lang": "en", "value": "gost (GO Simple Tunnel) is a simple tunnel written in golang. Sensitive secrets such as passwords, token and API keys should be compared only using a constant-time comparison function. Untrusted input, sourced from a HTTP header, is compared directly with a secret. Since this comparison is not secure, an attacker can mount a side-channel timing attack to guess the password. As a workaround, this can be easily fixed using a constant time comparing function such as `crypto/subtle`'s `ConstantTimeCompare`. \n"}, {"lang": "es", "value": "Gost (GO Simple Tunnel) es un t\u00fanel simple escrito en golang. Secretos sensibles como contrase\u00f1as, tokens y claves API deben ser comparados s\u00f3lo usando una funci\u00f3n de comparaci\u00f3n en tiempo constante. La entrada no fiable, procedente de una cabecera HTTP, se compara directamente con un secreto. Como esta comparaci\u00f3n no es segura, un atacante puede montar un ataque de tiempo de canal lateral para adivinar la contrase\u00f1a. Como soluci\u00f3n, esto se puede arreglar f\u00e1cilmente utilizando una funci\u00f3n de comparaci\u00f3n de tiempo constante como \"ConstantTimeCompare\" de \"crypto/subtle\""}], "lastModified": "2023-06-05T17:37:04.097", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:go_simple_tunnel_project:go_simple_tunnel:*:*:*:*:*:go:*:*", "vulnerable": true, "matchCriteriaId": "6AEF841A-C74B-4E8E-98EE-6C4CB29EE4CD", "versionEndIncluding": "2.11.5"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}