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CVE-2022-21648— Sandbox bypass in Latte templates

Quick assessment

Affected
nette latte
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.

Latte是Nette基金会的一个 Php 的模板引擎。 Latte存在安全漏洞，该漏洞源于2.8.0版本以来引入的沙箱模板，存在沙箱逃逸的情况，这允许注入从 Latte 生成的网页。 这可能会导致跨站脚本攻击。

CVSS 8.2 · High EPSS 0.82% · P54

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2022-21648

Vulnerability Information
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Vulnerability Title
Sandbox bypass in Latte templates
Source: CVE Program / CVE List V5
Vulnerability Description
Latte is an open source template engine for PHP. Versions since 2.8.0 Latte has included a template sandbox and in affected versions it has been found that a sandbox escape exists allowing for injection into web pages generated from Latte. This may lead to XSS attacks. The issue is fixed in the versions 2.8.8, 2.9.6 and 2.10.8. Users unable to upgrade should not accept template input from untrusted sources.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Latte 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Latte是Nette基金会的一个 Php 的模板引擎。 Latte存在安全漏洞，该漏洞源于2.8.0版本以来引入的沙箱模板，存在沙箱逃逸的情况，这允许注入从 Latte 生成的网页。 这可能会导致跨站脚本攻击。
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
nette latte >= 2.10.0, < 2.10.8 -

II. Public POCs for CVE-2022-21648

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III. Intelligence Information for CVE-2022-21648

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Patches & Fixes for CVE-2022-21648 (1)

Vendor Advisories for CVE-2022-21648 (1)

IV. Related Vulnerabilities

Same vendor: nette
Same weakness: CWE-79

V. Comments for CVE-2022-21648

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