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CVE-2022-43756— Rancher/Wrangler: Denial of service when processing Git credentials

Quick assessment

Affected
SUSE Rancher
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.

Rancher Labs Rancher是美国Rancher Labs公司的一套开源的企业级容器管理平台。 SUSE Ranche存在注入漏洞，该漏洞源于存在特殊元素注入漏洞，允许远程攻击者通过提供特制的凭证来导致拒绝服务。

CVSS 5.9 · Medium EPSS 0.68% · P51

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2022-43756

Vulnerability Information
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Vulnerability Title
Rancher/Wrangler: Denial of service when processing Git credentials
Source: CVE Program / CVE List V5
Vulnerability Description
A Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') vulnerability in SUSE Rancher allows remote attackers to cause denial of service by supplying specially crafted git credentials. This issue affects: SUSE Rancher wrangler version 0.7.3 and prior versions; wrangler version 0.8.4 and prior versions; wrangler version 1.0.0 and prior versions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
输出中的特殊元素转义处理不恰当(注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Rancher Labs Rancher 注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Rancher Labs Rancher是美国Rancher Labs公司的一套开源的企业级容器管理平台。 SUSE Ranche存在注入漏洞，该漏洞源于存在特殊元素注入漏洞，允许远程攻击者通过提供特制的凭证来导致拒绝服务。
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
SUSE Rancher wrangler ~ 0.7.3 -

II. Public POCs for CVE-2022-43756

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III. Intelligence Information for CVE-2022-43756

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Vendor Advisories for CVE-2022-43756 (1)

Same Patch Batch · SUSE · 2023-02-07 · 9 CVEs total

CVE-2022-43757 9.9 CRITICAL Rancher: Exposure of sensitive fields
CVE-2022-31254 7.8 HIGH rmt-server-pubcloud allows to escalate from user _rmt to root
CVE-2022-43758 7.6 HIGH Rancher: Command injection in Git package
CVE-2022-31249 7.5 HIGH [RANCHER] OS command injection in Rancher and Fleet
CVE-2022-21953 7.4 HIGH Authenticated user can gain unauthorized shell pod and kubectl access in the local cluster
CVE-2022-43759 7.2 HIGH Rancher: Privilege escalation via promoted roles
CVE-2022-43755 7.1 HIGH Rancher: Non-random authentication token
CVE-2023-22643 6.3 MEDIUM libzypp-plugin-appdata: potential arbitrary code execution via shell injection due to `os.

IV. Related Vulnerabilities

Same product: Rancher
Same vendor: SUSE
Same weakness: CWE-74

V. Comments for CVE-2022-43756

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