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CVE-2023-47124— Denial of service whith ACME HTTPChallenge in Traefik

Quick assessment

Affected
traefik traefik
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Containous Traefik是美国Containous公司的一款反向代理和负载平衡器。 Traefik v2.10.5及之前、 v3.0.0-beta4及之前版本存在安全漏洞，该漏洞源于当 Traefik 配置为使用HTTPChallenge生成和更新证书时，攻击者利用该漏洞可以进行Slowloris攻击。

CVSS 5.9 · Medium EPSS 0.79% · P55
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I. Basic Information for CVE-2023-47124

Vulnerability Information
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Vulnerability Title
Denial of service whith ACME HTTPChallenge in Traefik
Source: CVE Program / CVE List V5
Vulnerability Description
Traefik is an open source HTTP reverse proxy and load balancer. When Traefik is configured to use the `HTTPChallenge` to generate and renew the Let's Encrypt TLS certificates, the delay authorized to solve the challenge (50 seconds) can be exploited by attackers to achieve a `slowloris attack`. This vulnerability has been patch in version 2.10.6 and 3.0.0-beta5. Users are advised to upgrade. Users unable to upgrade should replace the `HTTPChallenge` with the `TLSChallenge` or the `DNSChallenge`.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对已超过有效生命周期的资源丧失索引
Source: CVE Program / CVE List V5
Vulnerability Title
Containous Traefik 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Containous Traefik是美国Containous公司的一款反向代理和负载平衡器。 Traefik v2.10.5及之前、 v3.0.0-beta4及之前版本存在安全漏洞，该漏洞源于当 Traefik 配置为使用HTTPChallenge生成和更新证书时，攻击者利用该漏洞可以进行Slowloris攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
traefik traefik < 2.10.6 -

II. Public POCs for CVE-2023-47124

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III. Intelligence Information for CVE-2023-47124

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Vendor Advisories for CVE-2023-47124 (1)

Other References for CVE-2023-47124 (6)

Same Patch Batch · traefik · 2023-12-04 · 3 CVEs total

CVE-2023-47633 7.5 HIGH Uncontrolled Resource Consumption in Traefik
CVE-2023-47106 4.8 MEDIUM Incorrect processing of fragment in the URL leads to Authorization Bypass in Traefik

IV. Related Vulnerabilities

Same product: traefik
Same vendor: traefik
Same weakness: CWE-772

V. Comments for CVE-2023-47124

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