Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2021-32550— apport read_file() function could follow maliciously constructed symbolic links

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。 Ubuntu Apport 中存在安全漏洞，该漏洞源于错误地处理了某些信息收集操作，攻击者可利用该漏洞可以使用这些问题作为管理员读写任意文件。以下产品及版本受到影响：Ubuntu 14.04 ESM、Ubuntu 16.04 ESM。

CVSS 7.3 · High EPSS 0.29% · P19
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2021-32550

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
apport read_file() function could follow maliciously constructed symbolic links
Source: CVE Program / CVE List V5
Vulnerability Description
It was discovered that read_file() in apport/hookutils.py would follow symbolic links or open FIFOs. When this function is used by the openjdk-14 package apport hooks, it could expose private data to other local users.
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:L
Source: CVE Program / CVE List V5
Vulnerability Type
在文件访问前对链接解析不恰当(链接跟随)
Source: CVE Program / CVE List V5
Vulnerability Title
Ubuntu Apport 后置链接漏洞
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。 Ubuntu Apport 中存在安全漏洞，该漏洞源于错误地处理了某些信息收集操作，攻击者可利用该漏洞可以使用这些问题作为管理员读写任意文件。以下产品及版本受到影响：Ubuntu 14.04 ESM、Ubuntu 16.04 ESM。
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 2.20.1 ~ 2.20.1-0ubuntu2.30+esm1 -

II. Public POCs for CVE-2021-32550

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2021-32550

请登录查看更多情报信息。

Other References for CVE-2021-32550 (1)

Same Patch Batch · Canonical · 2021-06-12 · 11 CVEs total

CVE-2021-32555 7.3 HIGH apport read_file() function could follow maliciously constructed symbolic links
CVE-2021-32553 7.3 HIGH apport read_file() function could follow maliciously constructed symbolic links
CVE-2021-32554 7.3 HIGH apport read_file() function could follow maliciously constructed symbolic links
CVE-2021-32552 7.3 HIGH apport read_file() function could follow maliciously constructed symbolic links
CVE-2021-32551 7.3 HIGH apport read_file() function could follow maliciously constructed symbolic links
CVE-2021-32549 7.3 HIGH apport read_file() function could follow maliciously constructed symbolic links
CVE-2021-32548 7.3 HIGH apport read_file() function could follow maliciously constructed symbolic links
CVE-2021-32547 7.3 HIGH apport read_file() function could follow maliciously constructed symbolic links
CVE-2021-32557 5.2 MEDIUM apport process_report() arbitrary file write
CVE-2021-32556 3.8 LOW apport get_modified_conffiles() function command injection

IV. Related Vulnerabilities

Same product: apport
Same vendor: Canonical
Same weakness: CWE-59

V. Comments for CVE-2021-32550

No comments yet

Leave a comment