CVE-2020-27153
Published: 15 October 2020
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.
Priority
Low
CVSS 3 base score: 8.6
Status
| Package | Release | Status |
|---|---|---|
|
bluez Launchpad, Ubuntu, Debian |
bionic |
Released
(5.48-0ubuntu3.5)
|
| focal |
Released
(5.53-0ubuntu3.2)
|
|
| groovy |
Released
(5.55-0ubuntu1)
|
|
| hirsute |
Released
(5.55-0ubuntu1)
|
|
| impish |
Released
(5.55-0ubuntu1)
|
|
| jammy |
Released
(5.55-0ubuntu1)
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.55-1)
|
|
| xenial |
Released
(5.37-0ubuntu5.3+esm1)
|
Notes
| Author | Note |
|---|---|
| mdeslaur | per Red Hat, there is currently no known path to code execution as there is a small time window between the two calls to free() as such, marking as low priority. |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27153
- https://github.com/bluez/bluez/commit/5a180f2ec9edfacafd95e5fed20d36fe8e077f07
- https://ubuntu.com/security/notices/USN-4989-1
- https://ubuntu.com/security/notices/USN-4989-2
- NVD
- Launchpad
- Debian