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CVE-2020-35452— mod_auth_digest possible stack overflow by one nul byte

Quick assessment

Affected
Apache Software Foundation Apache HTTP Server
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

EasyApache是Apache基金会的一个功能强大且易于使用的工具，内置在WHM/cPanel中，可以使用它来更新和配置Apache web服务器。 EasyApache 存在缓冲区错误漏洞，该漏洞源于mod_auth_digest 中每零字节的堆栈溢出。

AI Predicted 5.3 Difficulty: Theoretical EPSS 54.81% · P99

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2020-35452

Vulnerability Information
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Vulnerability Title
mod_auth_digest possible stack overflow by one nul byte
Source: CVE Program / CVE List V5
Vulnerability Description
Apache HTTP Server versions 2.4.0 to 2.4.46 A specially crafted Digest nonce can cause a stack overflow in mod_auth_digest. There is no report of this overflow being exploitable, nor the Apache HTTP Server team could create one, though some particular compiler and/or compilation option might make it possible, with limited consequences anyway due to the size (a single byte) and the value (zero byte) of the overflow
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
EasyApache 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
EasyApache是Apache基金会的一个功能强大且易于使用的工具，内置在WHM/cPanel中，可以使用它来更新和配置Apache web服务器。 EasyApache 存在缓冲区错误漏洞，该漏洞源于mod_auth_digest 中每零字节的堆栈溢出。
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
Apache Software Foundation Apache HTTP Server 2.4.46 -

II. Public POCs for CVE-2020-35452

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III. Intelligence Information for CVE-2020-35452

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Vendor Advisories for CVE-2020-35452 (5)

Mailing List Discussions for CVE-2020-35452 (7)

Same Patch Batch · Apache Software Foundation · 2021-06-10 · 7 CVEs total

CVE-2021-30641 Unexpected URL matching with 'MergeSlashes OFF'
CVE-2021-26691 Apache HTTP Server mod_session response handling heap overflow
CVE-2021-26690 mod_session NULL pointer dereference
CVE-2020-13950 mod_proxy_http NULL pointer dereference
CVE-2020-13938 Improper Handling of Insufficient Privileges
CVE-2019-17567 mod_proxy_wstunnel tunneling of non Upgraded connections

IV. Related Vulnerabilities

Same product: Apache HTTP Server
Same vendor: Apache Software Foundation

V. Comments for CVE-2020-35452

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