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CVE-2021-3709— Apport file permission bypass through emacs byte compilation errors

Quick assessment

Affected
Canonical apport
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.

Apport是一款用于收集并反馈错误信息（当应用程序崩溃时操作系统认为有用的信息）的工具包。 Apport 存在安全漏洞，该漏洞源于本地攻击者可利用该漏洞可以利用此问题获得对任意文件(可能包含敏感信息)的读访问权。

CVSS 6.5 · Medium EPSS 0.46% · P38

Possible ATT&CK Techniques 1 AI

T1005 · Data from Local System
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I. Basic Information for CVE-2021-3709

Vulnerability Information
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Vulnerability Title
Apport file permission bypass through emacs byte compilation errors
Source: CVE Program / CVE List V5
Vulnerability Description
Function check_attachment_for_errors() in file data/general-hooks/ubuntu.py could be tricked into exposing private data via a constructed crash file. This issue affects: apport 2.14.1 versions prior to 2.14.1-0ubuntu3.29+esm8; 2.20.1 versions prior to 2.20.1-0ubuntu2.30+esm2; 2.20.9 versions prior to 2.20.9-0ubuntu7.26; 2.20.11 versions prior to 2.20.11-0ubuntu27.20; 2.20.11 versions prior to 2.20.11-0ubuntu65.3;
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
文件和路径信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Apport 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apport是一款用于收集并反馈错误信息（当应用程序崩溃时操作系统认为有用的信息）的工具包。 Apport 存在安全漏洞，该漏洞源于本地攻击者可利用该漏洞可以利用此问题获得对任意文件(可能包含敏感信息)的读访问权。
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
Canonical apport 2.14.1 ~ 2.14.1-0ubuntu3.29+esm8 -

II. Public POCs for CVE-2021-3709

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III. Intelligence Information for CVE-2021-3709

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Vendor Advisories for CVE-2021-3709 (3)

Other References for CVE-2021-3709 (1)

Same Patch Batch · Canonical · 2021-10-01 · 4 CVEs total

CVE-2021-3747 8.8 HIGH MacOS version of Multipass incorrect owner for application directory
CVE-2021-3626 8.8 HIGH Windows version of Multipass unauthenticated localhost tcp control socket can perform moun
CVE-2021-3710 6.5 MEDIUM Apport info disclosure via path traversal bug in read_file

IV. Related Vulnerabilities

Same product: apport
Same vendor: Canonical
Same weakness: CWE-538

V. Comments for CVE-2021-3709

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