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CVE-2017-13089— GNU Wget: stack overflow in HTTP protocol handling

Quick assessment

Affected
GNU Project Wget
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.

GNU Wget是GNU计划开发的一套用于在网络上进行下载的自由软件，它支持通过HTTP、HTTPS以及FTP这三个最常见的TCP/IP协议下载。 GNU Wget 1.19.2之前的版本中存在基于栈的缓冲区溢出漏洞。远程攻击者可利用该漏洞在受影响的应用程序上下文中执行任意代码或造成拒绝服务。

AI Predicted 7.5 Difficulty: Easy EPSS 79.86% · P100
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I. Basic Information for CVE-2017-13089

Vulnerability Information
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Vulnerability Title
GNU Wget: stack overflow in HTTP protocol handling
Source: CVE Program / CVE List V5
Vulnerability Description
The http.c:skip_short_body() function is called in some circumstances, such as when processing redirects. When the response is sent chunked in wget before 1.19.2, the chunk parser uses strtol() to read each chunk's length, but doesn't check that the chunk length is a non-negative number. The code then tries to skip the chunk in pieces of 512 bytes by using the MIN() macro, but ends up passing the negative chunk length to connect.c:fd_read(). As fd_read() takes an int argument, the high 32 bits of the chunk length are discarded, leaving fd_read() with a completely attacker controlled length argument.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
GNU Wget 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GNU Wget是GNU计划开发的一套用于在网络上进行下载的自由软件，它支持通过HTTP、HTTPS以及FTP这三个最常见的TCP/IP协议下载。 GNU Wget 1.19.2之前的版本中存在基于栈的缓冲区溢出漏洞。远程攻击者可利用该漏洞在受影响的应用程序上下文中执行任意代码或造成拒绝服务。
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)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
GNU Project Wget prior to 1.19.2 -

II. Public POCs for CVE-2017-13089

# POC Description Source Link Shenlong Link
1 PoC for wget v1.19.1 https://github.com/r1b/CVE-2017-13089 POC Details
2 CVE-2017-13089 https://github.com/mzeyong/CVE-2017-13089 POC Details
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III. Intelligence Information for CVE-2017-13089

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Vendor Advisories for CVE-2017-13089 (5)

Other References for CVE-2017-13089 (4)

IV. Related Vulnerabilities

Same product: Wget
Same vendor: GNU Project
Same weakness: CWE-121

V. Comments for CVE-2017-13089

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