CVE
CVE-2021-44142
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.
- Severity
- HIGH
- CVSS
- 8.8
- Published
- Modified
Linked Releases
| Distribution | Release | Status | Evidence |
|---|---|---|---|
| Ubuntu | 20.04.6 amd64 desktop | unknown | source |
| Ubuntu | 20.04.6 amd64 live-server | unknown | source |
| Ubuntu | 18.04.6 amd64 desktop | unknown | source |
| Ubuntu | 18.04.6 amd64 live-server | unknown | source |
References
- https://bugzilla.samba.org/show_bug.cgi?id=14914
- https://kb.cert.org/vuls/id/119678
- https://security.gentoo.org/glsa/202309-06
- https://www.samba.org/samba/security/CVE-2021-44142.html
- https://www.zerodayinitiative.com/blog/2022/2/1/cve-2021-44142-details-on-a-samba-code-execution-bug-demonstrated-at-pwn2own-austin
- https://bugzilla.samba.org/show_bug.cgi?id=14914
- https://kb.cert.org/vuls/id/119678
- https://security.gentoo.org/glsa/202309-06
- https://www.kb.cert.org/vuls/id/119678
- https://www.samba.org/samba/security/CVE-2021-44142.html
- https://www.zerodayinitiative.com/blog/2022/2/1/cve-2021-44142-details-on-a-samba-code-execution-bug-demonstrated-at-pwn2own-austin