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8.8 High

CVE-2021-44142 The Samba vfs_fruit module uses extended file attributes (EA, xattr) to provide "...enhanced compatibility with Apple…

Description

The Samba vfs_fruit module uses extended file attributes (EA, xattr) to provide "...enhanced compatibility with Apple SMB clients and interoperability with a Netatalk 3 AFP fileserver." Samba versions prior to 4.13.17, 4.14.12 and 4.15.5 with vfs_fruit configured allow out-of-bounds heap read and write via specially crafted extended file attributes. A remote attacker with write access to extended file attributes can execute arbitrary code with the privileges of smbd, typically root.

Affected products and versions

Product Affected versions Fixed in
Samba 4.15 earliest → < 4.15.5 4.15.5
Samba 4.14 earliest → < 4.14.12 4.14.12
Samba 4.13 earliest → < 4.13.17 4.13.17

References

Timeline

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