CVE-2022-47952
lxc-user-nic in lxc through 5.0.1 is installed setuid root, and may allow local users to infer whether any file exists, even within a protected direct...
原文の説明
取得元が公開している説明をそのまま載せています (多くは英語)。
lxc-user-nic in lxc through 5.0.1 is installed setuid root, and may allow local users to infer whether any file exists, even within a protected directory tree, because "Failed to open" often indicates that a file does not exist, whereas "does not refer to a network namespace path" often indicates that a file exists. NOTE: this is different from CVE-2018-6556 because the CVE-2018-6556 fix design was based on the premise that "we will report back to the user that the open() failed but the user has no way of knowing why it failed"; however, in many realistic cases, there are no plausible reasons for failing except that the file does not exist.
ディストリビューション別の修正状況
各ディストリビューションが公開している、この CVE の修正パッケージ
- Alpine Linux ALPINE-CVE-2022-47952 lxc 修正版: 4.0.10-r2
- Debian DEBIAN-CVE-2022-47952 lxc 修正版: 1:4.0.6-2+deb11u2
参照URL
- advisory github.com
- advisory nvd.nist.gov
- package github.com
- web bugs.launchpad.net
- web github.com
- web github.com
- web lists.debian.org