Vulnerability Information
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Vulnerability Title
Apport race condition in crash report permissions
Vulnerability Description
Time-of-check Time-of-use Race Condition vulnerability on crash report ownership change in Apport allows for a possible privilege escalation opportunity. If fs.protected_symlinks is disabled, this can be exploited between the os.open and os.chown calls when the Apport cron script clears out crash files of size 0. A symlink with the same name as the deleted file can then be created upon which chown will be called, changing the file owner to root. Fixed in versions 2.20.1-0ubuntu2.23, 2.20.9-0ubuntu7.14, 2.20.11-0ubuntu8.8 and 2.20.11-0ubuntu22.
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
Vulnerability Type
检查时间与使用时间(TOCTOU)的竞争条件
Vulnerability Title
Apport 安全漏洞
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中存在安全漏洞。本地攻击者可通过实施符号链接攻击利用该漏洞读取任意文件。
CVSS Information
N/A
Vulnerability Type
N/A