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CVE-2021-29622— Arbitrary redirects under /new endpoint

Quick assessment

Affected
prometheus prometheus
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Prometheus是一款使用Go语言编写的、用于记录使用HTTP拉模型构建的时间序列数据库中实时指标的开源软件。 Prometheus 存在输入验证错误漏洞，攻击者可利用该漏洞重定向到任何其他URL。

CVSS 6.5 · Medium EPSS 19.56% · P97

Public Exploits 1

Nuclei · 1 CVE-2021-29622.yaml [template]

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise
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I. Basic Information for CVE-2021-29622

Vulnerability Information
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Vulnerability Title
Arbitrary redirects under /new endpoint
Source: CVE Program / CVE List V5
Vulnerability Description
Prometheus is an open-source monitoring system and time series database. In 2.23.0, Prometheus changed its default UI to the New ui. To ensure a seamless transition, the URL's prefixed by /new redirect to /. Due to a bug in the code, it is possible for an attacker to craft an URL that can redirect to any other URL, in the /new endpoint. If a user visits a prometheus server with a specially crafted address, they can be redirected to an arbitrary URL. The issue was patched in the 2.26.1 and 2.27.1 releases. In 2.28.0, the /new endpoint will be removed completely. The workaround is to disable access to /new via a reverse proxy in front of Prometheus.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
指向未可信站点的URL重定向(开放重定向)
Source: CVE Program / CVE List V5
Vulnerability Title
Prometheus 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Prometheus是一款使用Go语言编写的、用于记录使用HTTP拉模型构建的时间序列数据库中实时指标的开源软件。 Prometheus 存在输入验证错误漏洞，攻击者可利用该漏洞重定向到任何其他URL。
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)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
prometheus prometheus >= 2.23.0, < 2.27.1 -

II. Public POCs for CVE-2021-29622

# POC Description Source Link Shenlong Link
1 Prometheus 2.23.0 through 2.26.0 and 2.27.0 contains an open redirect vulnerability. To ensure a seamless transition to 2.27.0, the default UI was changed to the new UI with a URL prefixed by /new redirect to /. Due to a bug in the code, an attacker can redirect a user to a malicious site and possibly obtain sensitive information, modify data, and/or execute unauthorized operations. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-29622.yaml POC Details
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III. Intelligence Information for CVE-2021-29622

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Vendor Advisories for CVE-2021-29622 (1)

Other References for CVE-2021-29622 (2)

IV. Related Vulnerabilities

Same product: prometheus
Same vendor: prometheus
Same weakness: CWE-601

V. Comments for CVE-2021-29622

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