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19 lines
1.3 KiB
Markdown
19 lines
1.3 KiB
Markdown
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### [CVE-2019-12749](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-12749)
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### Description
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dbus before 1.10.28, 1.12.x before 1.12.16, and 1.13.x before 1.13.12, as used in DBusServer in Canonical Upstart in Ubuntu 14.04 (and in some, less common, uses of dbus-daemon), allows cookie spoofing because of symlink mishandling in the reference implementation of DBUS_COOKIE_SHA1 in the libdbus library. (This only affects the DBUS_COOKIE_SHA1 authentication mechanism.) A malicious client with write access to its own home directory could manipulate a ~/.dbus-keyrings symlink to cause a DBusServer with a different uid to read and write in unintended locations. In the worst case, this could result in the DBusServer reusing a cookie that is known to the malicious client, and treating that cookie as evidence that a subsequent client connection came from an attacker-chosen uid, allowing authentication bypass.
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### POC
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#### Reference
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No PoCs from references.
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#### Github
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- https://github.com/fbreton/lacework
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- https://github.com/fokypoky/places-list
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