CVE-2020-27153

NameCVE-2020-27153
DescriptionIn BlueZ before 5.55, a double free was found in the gatttool disconnect_cb() routine from shared/att.c. A remote attacker could potentially cause a denial of service or code execution, during service discovery, due to a redundant disconnect MGMT event.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-2410-1, DSA-4951-1
NVD severityhigh

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
bluez (PTS)stretch5.43-2+deb9u2vulnerable
stretch (security)5.43-2+deb9u4fixed
buster5.50-1.2~deb10u1vulnerable
buster (security)5.50-1.2~deb10u2fixed
bullseye5.55-3.1fixed
bookworm, sid5.61-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
bluezsourcestretch5.43-2+deb9u3DLA-2410-1
bluezsourcebuster5.50-1.2~deb10u2DSA-4951-1
bluezsource(unstable)5.55-1

Notes

https://bugzilla.redhat.com/show_bug.cgi?id=1884817
https://git.kernel.org/pub/scm/bluetooth/bluez.git/commit/?id=1cd644db8c23a2f530ddb93cebed7dacc5f5721a

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