CVE-2024-1724: snapd failed to restrict writes to the… – CVSS 8.2 · Watchpost

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snapd failed to restrict writes to the $HOME/bin path

高 8.2CVE-2024-1724 · GHSA-4mh8-9689-38vr · GO-2024-3007 · 25/07/2024 公開 · 17/06/2026 更新

要点

CVE-2024-1724 は github.com/snapcore/snapd, snapd (canonical) に影響する深刻度「高」 (CVSS 8.2) の脆弱性です。
今後30日間に悪用される確率（EPSS）：0.31%（全脆弱性の 23.4% より高い）。
対処：2.62 以降に更新してください。

パッケージ	影響を受けるバージョン	修正済みバージョン
github.com/snapcore/snapd Go	`< 2.62全バージョン`	`2.62`
snapd canonical	`< 2.62`	`2.62`

概要

In snapd versions prior to 2.62, when using AppArmor for enforcement of sandbox permissions, snapd failed to restrict writes to the $HOME/bin path. In Ubuntu, when this path exists, it is automatically added to the users PATH. An attacker who could convince a user to install a malicious snap which used the 'home' plug could use this vulnerability to install arbitrary scripts into the users PATH which may then be run by the user outside of the expected snap sandbox and hence allow them to escape confinement.

NVD の説明

In snapd versions prior to 2.62, when using AppArmor for enforcement of sandbox permissions, snapd failed to restrict writes to the $HOME/bin path. In Ubuntu, when this path exists, it is automatically added to the users PATH. An attacker who could convince a user to install a malicious snap which used the 'home' plug could use this vulnerability to install arbitrary scripts into the users PATH which may then be run by the user outside of the expected snap sandbox and hence allow them to escape confinement.

参考情報

nvd.nist.gov/vuln/detail/CVE-2024-1724 · ADVISORY
snapcore/snapd#13689 · WEB
snapcore/snapd commit aa191f9 · WEB
snapcore/snapd · PACKAGE
gld.mcphail.uk/posts/explaining-cve-2024-1724 · WEB
pkg.go.dev/vuln/GO-2024-3007 · WEB
gld.mcphail.uk/posts/explaining-cve-2024-1724 · Exploit
GitHub Advisory GHSA-4mh8-9689-38vr · ADVISORY

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