CVE-2021-25684— apport can be stalled by reading a FIFO
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I. Basic Information for CVE-2021-25684
Vulnerability Information
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Vulnerability Title
apport can be stalled by reading a FIFO
Source: NVD (National Vulnerability Database)
Vulnerability Description
It was discovered that apport in data/apport did not properly open a report file to prevent hanging reads on a FIFO.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
输入验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Apport 输入验证错误漏洞
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 存在输入验证错误漏洞， 本地攻击者可利用该漏洞升级特权并运行任意代码。
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
II. Public POCs for CVE-2021-25684
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://bugs.launchpad.net/ubuntu/+source/apport/+bug/1912326x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2021-25684
Same Patch Batch · Canonical · 2021-06-11 · 3 CVEs total
| CVE-2021-25682 | 8.8 HIGH | apport improperly parses /proc/pid/status |
| CVE-2021-25683 | 8.8 HIGH | apport improperly parses /proc/pid/stat |
IV. Related Vulnerabilities
Same vendor: Canonical
- CVE-2026-6970
authd Denial of Service and Local Privilege Escalation - CVE-2026-6369
Exposed Session Token in canonical-livepatch client snap - CVE-2026-5412
Juju CloudSpec API could leak senstive information - CVE-2026-5774
Juju API Server Denial of Service and Authentication Replay - CVE-2025-14551
Senstive information disclosure was affecting subiquity
Same weakness: CWE-20
V. Comments for CVE-2021-25684
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