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CVE-2023-30536— Insecure header validation in slim/psr7

Quick assessment

Affected
slimphp Slim-Psr7
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.

SLiM（Simple Login Manager）是一款简单、轻量级和容易配置的登录管理器。 Slim psr7 1.6.1之前版本存在安全漏洞，该漏洞源于攻击者可以在标头名称和值中加入换行符。

CVSS 6.5 · Medium EPSS 0.74% · P54
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I. Basic Information for CVE-2023-30536

Vulnerability Information
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Vulnerability Title
Insecure header validation in slim/psr7
Source: CVE Program / CVE List V5
Vulnerability Description
slim/psr7 is a PSR-7 implementation for use with Slim 4. In versions prior to 1.6.1 an attacker could sneak in a newline (\n) into both the header names and values. While the specification states that \r\n\r\n is used to terminate the header list, many servers in the wild will also accept \n\n. An attacker that is able to control the header names that are passed to Slilm-Psr7 would be able to intentionally craft invalid messages, possibly causing application errors or invalid HTTP requests being sent out with an PSR-18 HTTP client. The latter might present a denial of service vector if a remote service’s web application firewall bans the application due to the receipt of malformed requests. The issue has been patched in version 1.6.1. There are no known workarounds to this issue. Users are advised to upgrade.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
解释冲突
Source: CVE Program / CVE List V5
Vulnerability Title
Slim psr7 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SLiM（Simple Login Manager）是一款简单、轻量级和容易配置的登录管理器。 Slim psr7 1.6.1之前版本存在安全漏洞，该漏洞源于攻击者可以在标头名称和值中加入换行符。
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
slimphp Slim-Psr7 < 1.6.1 -

II. Public POCs for CVE-2023-30536

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III. Intelligence Information for CVE-2023-30536

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Patches & Fixes for CVE-2023-30536 (1)

Vendor Advisories for CVE-2023-30536 (1)

Other References for CVE-2023-30536 (1)

IV. Related Vulnerabilities

Same vendor: slimphp
Same weakness: CWE-436

V. Comments for CVE-2023-30536

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