-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 - ------------------------------------------------------------------------- Debian LTS Advisory DLA-2827-1 debian-...@lists.debian.org https://www.debian.org/lts/security/ Sylvain Beucler November 27, 2021 https://wiki.debian.org/LTS - -------------------------------------------------------------------------
Package : bluez Version : 5.43-2+deb9u5 CVE ID : CVE-2019-8921 CVE-2019-8922 CVE-2021-41229 Debian Bug : 1000262 Several vulnerabilities were discovered in BlueZ, the Linux Bluetooth protocol stack. An attacker could cause a denial-of-service (DoS) or leak information. CVE-2019-8921 SDP infoleak; the vulnerability lies in the handling of a SVC_ATTR_REQ by the SDP implementation of BlueZ. By crafting a malicious CSTATE, it is possible to trick the server into returning more bytes than the buffer actually holds, resulting in leaking arbitrary heap data. CVE-2019-8922 SDP Heap Overflow; this vulnerability lies in the SDP protocol handling of attribute requests as well. By requesting a huge number of attributes at the same time, an attacker can overflow the static buffer provided to hold the response. CVE-2021-41229 sdp_cstate_alloc_buf allocates memory which will always be hung in the singly linked list of cstates and will not be freed. This will cause a memory leak over time. The data can be a very large object, which can be caused by an attacker continuously sending sdp packets and this may cause the service of the target device to crash. For Debian 9 stretch, these problems have been fixed in version 5.43-2+deb9u5. We recommend that you upgrade your bluez packages. For the detailed security status of bluez please refer to its security tracker page at: https://security-tracker.debian.org/tracker/bluez 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 -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEE1vEOfV7HXWKqBieIDTl9HeUlXjAFAmGiEh0ACgkQDTl9HeUl XjCqVQ/9HDvMcYwdegi6hxeBdzaBghIHveFKGx9HxOSEVHjtFabZbURMWT+nlg1a TvhzC2YPKGyvqV6DJz3d1Nvc01bHcqRr/0ZUywn7bgjsCyjhNGTQCJgCL4lGdRkb i9fsgDRVAb94PACw9O4o5FvpAexAIpNlhEi8+jyPmUa/dgPXS6UwD9SG1jbvAY/L NK4uilj6y0rcLuJLNS5DlXsSKSaQ/OauzPcZgh3r99C4SU51Ix90GbhBL/+C7aox hP8s85bjfMMpqrkxqu+210Pf+J/fQc/h/LGBGryQqgaOdQ2Feu8YOLTSG64M42UJ Bm0Xw3MXbxOl4Rk2eg86g0zf/s/ONBGZZcIdHwJDDeWvWRtoJ+b/FceWdJvlgxBA 0gwzWsdvlaporMIabqhgVVRebpsK9sSJ3MLVo6ADZV3UZvfNdPQYmh5psvzBgYXX O01V+kB5Gxd+MegV8QfOb+pKE+jNTrwhzWOx5z2J9T6nTBo6ABq9PgBHKqJnO2Ov K1rwRF1EMPjnM+en1plSjfNRIxATBTDXAISryK00NL+X35QgetA5YcVWH0bHbLZr kXE2pk/56UzC64Fw+wkTJKwxNP7TykFAY6JZAwtDb58jssXOXHa8j5wzQ4IZ8Kcd t7QY1Xt77yyFlVLWszbkQtFsWX7hETVnEC90tNHrIYXe34dELso= =fTkb -----END PGP SIGNATURE-----