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LIN1018-7104 : Security Advisory - dbus - CVE-2020-35512

Created: Jan 7, 2021    Updated: Jan 23, 2021
Resolved Date: Jan 23, 2021
Found In Version: 10.18.44.1
Severity: Standard
Applicable for: Wind River Linux LTS 18
Component/s: Userspace

Description

On Unix, avoid a use-after-free if two usernames have the same numeric uid. In older versions this could lead to a crash (denial of service) or other undefined behaviour, possibly including incorrect authorization decisions if <policy group=...> is used. Like Unix filesystems, D-Bus' model of identity cannot distinguish between users of different names with the same numeric uid, so this configuration is not advisable on systems where D-Bus will be used.

https://gitlab.freedesktop.org/dbus/dbus/-/commit/e75c67a28fa2bc41a8ab0de433a52355c71a8abf

CREATE(Triage):(User=admin) [CVE-2020-35512|https://nvd.nist.gov/vuln/detail/CVE-2020-35512]

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