7.5 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
8.6 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
0.05 Low
EPSS
Percentile
92.9%
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.
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. |
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | bluez | < 5.48-0ubuntu3.5 | UNKNOWN |
ubuntu | 20.04 | noarch | bluez | < 5.53-0ubuntu3.2 | UNKNOWN |
ubuntu | 20.10 | noarch | bluez | < 5.55-0ubuntu1 | UNKNOWN |
ubuntu | 21.04 | noarch | bluez | < 5.55-0ubuntu1 | UNKNOWN |
ubuntu | 21.10 | noarch | bluez | < 5.55-0ubuntu1 | UNKNOWN |
ubuntu | 22.04 | noarch | bluez | < 5.55-0ubuntu1 | UNKNOWN |
ubuntu | 16.04 | noarch | bluez | < 5.37-0ubuntu5.3+esm1 | UNKNOWN |
github.com/bluez/bluez/commit/5a180f2ec9edfacafd95e5fed20d36fe8e077f07
launchpad.net/bugs/cve/CVE-2020-27153
nvd.nist.gov/vuln/detail/CVE-2020-27153
security-tracker.debian.org/tracker/CVE-2020-27153
ubuntu.com/security/notices/USN-4989-1
ubuntu.com/security/notices/USN-4989-2
www.cve.org/CVERecord?id=CVE-2020-27153
7.5 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
8.6 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
0.05 Low
EPSS
Percentile
92.9%