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CVE-2019-7303— Snapd seccomp filter TIOCSTI ioctl bypass

Quick assessment

Affected
Canonical snapd
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.

Canonical snapd是英国科能（Canonical）公司的一套软件部署和包管理系统。 Canonical snapd 2.37.4之前版本中存在安全漏洞。攻击者可利用该漏洞绕过访问限制并向输入队列中注入字符。

AI Predicted 5.5 Difficulty: Easy EPSS 3.70% · P89

Public Exploits 1

ExploitDB · 1 EDB-46594 [dos]
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I. Basic Information for CVE-2019-7303

Vulnerability Information
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Vulnerability Title
Snapd seccomp filter TIOCSTI ioctl bypass
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the seccomp filters of Canonical snapd before version 2.37.4 allows a strict mode snap to insert characters into a terminal on a 64-bit host. The seccomp rules were generated to match 64-bit ioctl(2) commands on a 64-bit platform; however, the Linux kernel only uses the lower 32 bits to determine which ioctl(2) commands to run. This issue affects: Canonical snapd versions prior to 2.37.4.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
使用不正确指定参数的函数调用
Source: CVE Program / CVE List V5
Vulnerability Title
Canonical snapd 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Canonical snapd是英国科能（Canonical）公司的一套软件部署和包管理系统。 Canonical snapd 2.37.4之前版本中存在安全漏洞。攻击者可利用该漏洞绕过访问限制并向输入队列中注入字符。
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 snapd unspecified ~ 2.37.4 -

II. Public POCs for CVE-2019-7303

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III. Intelligence Information for CVE-2019-7303

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Vendor Advisories for CVE-2019-7303 (1)

Exploits & Public PoCs for CVE-2019-7303 (1)

IV. Related Vulnerabilities

Same product: snapd
Same vendor: Canonical
Same weakness: CWE-628

V. Comments for CVE-2019-7303

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