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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2024.0104 netatalk security update 5 January 2024 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: netatalk Publisher: Debian Operating System: Debian GNU/Linux Resolution: Patch/Upgrade CVE Names: CVE-2022-22995 Original Bulletin: https://lists.debian.org/debian-lts-announce/2024/01/msg00000.html Comment: CVSS (Max): 10.0 CVE-2022-22995 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L) CVSS Source: Western Digital Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L - --------------------------BEGIN INCLUDED TEXT-------------------- - ------------------------------------------------------------------------- Debian LTS Advisory DLA-3706-1 debian-lts@lists.debian.org https://www.debian.org/lts/security/ Markus Koschany January 04, 2024 https://wiki.debian.org/LTS - ------------------------------------------------------------------------- Package : netatalk Version : 3.1.12~ds-3+deb10u5 CVE ID : CVE-2022-22995 Debian Bug : 1053545 Corentin BAYET, Etienne HELLUY-LAFONT and Luca MORO of Synacktiv discovered a symlink redirection vulnerability in Netatalk, the Apple Filing Protocol service. The create_appledesktop_folder function of netatalk can be used to unsafely move files outside the shared volume using the "mv" system utility. The create_appledesktop_folder function is called when netatalk is configured to use the legacy AppleDouble v2 format of file system meta data. By using the features of another file sharing protocol, like SMB, an attacker could abuse this primitive to create an arbitrary symbolic link and move it outside the share. The attacker could then reuse the created symlink to write arbitrary files on the targeted system. On the targeted device where it was demonstrated, writing arbitrary files on the system resulted in a remote code execution. For Debian 10 buster, this problem has been fixed in version 3.1.12~ds-3+deb10u5. We recommend that you upgrade your netatalk packages. For the detailed security status of netatalk please refer to its security tracker page at: https://security-tracker.debian.org/tracker/netatalk Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. 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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: https://auscert.org.au/gpg-key/ iQIVAwUBZZdIEckNZI30y1K9AQjs9g//SjtL3dWkMMxSRqUEt1ySD8tjR9Qjk95m HDHyWISSagXbfDHnmcoRls/pEtoEk34V/FAM790922n06uxBwDMQeFa+gqv0dV76 lC9bUa3bOGxM8fiPdYvqfbf6UFt5wK82svoEsnWoyaAh2r6vF1InDsaBoo1TrVbG n+IGplww/a4PrF3iZ1jP/YskIwQ+PvUvcwtCcu7OtUV92wRNtxmv11jmTXC/Dd+F BAuaPXUDWqFU1six2EJEorEUZawDkcOPdjuFozufw839YNMMUHKU3rrMDydKt17v UbLkotc9K43+Fg/OpX/yBzpyC5ZqaKSUCMtmG4o7Rg4DEZi1ey0hreBF2SrHh8an lUjKBBVjCBy9SB6X/evirHUV2ByChMwDEAtAcTD7VvB+xG0Ov3sgzPj6/NzRU45n JqXIp4mqVw9/Jl1uTIQ24hz91EDO1vI+gIe24iHjqSTrW7B6LwNVD0bLVcziVPyu bmE2Pp/YkeO00yaQH+tqjSFUpfZbW0Ufmfw1cgtNod0EXbGn/sMziYlkwFmlBXkm LYp3WuF+cAEZyD1KXINoPzCcRgJ5oF8uSOVQMDKUJ9MZiReaai7AdUI81wu0yvAe 2Eyjp1JXFzPxE71XvBlfKJwFs1m/dYc1NgBjJA3J1TY5Tb6dEyav+GJyfjfEb36W r/dnC6FfUXI= =JdmR -----END PGP SIGNATURE-----