High severity · published Oct 15, 2020
CVE-2020-27153
In BlueZ before 5.55, a double free was found in the gatttool disconnect_cb() routine from shared/att.c
8.6
CVSS
4.3%
EPSS
No
On KEV
Description
In 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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)4.3% · higher than 91% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BL
Bluez · Bluez
before 5.55 · source: NVD
DL
Debian Linux · Debian
9.0; 10.0 · source: NVD
LE
Leap · Opensuse
15.1; 15.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-27153
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-27153
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00034.html
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00036.html
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1884817
Patch
https://github.com/bluez/bluez/commit/1cd644db8c23a2f530ddb93cebed7dacc5f5721a
Patch
https://github.com/bluez/bluez/commit/5a180f2ec9edfacafd95e5fed20d36fe8e077f07
Mailing List
https://lists.debian.org/debian-lts-announce/2020/10/msg00022.html
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