Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2020-27153

Double Free

Published: Oct 15, 2020 | Modified: Nov 21, 2024
CVSS 3.x
8.6
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
CVSS 2.x
7.5 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P
RedHat/V2
RedHat/V3
8.8 MODERATE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:H
Ubuntu
LOW
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2020-27153
CWEhttps://cwe.mitre.org/data/definitions/415.html

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.

Weakness

The product calls free() twice on the same memory address.

Affected Software

NameVendorStart VersionEnd Version
BluezBluez*5.55 (excluding)
Red Hat Enterprise Linux 8RedHatbluez-0:5.52-4.el8*
Red Hat Enterprise Linux 8RedHatbluez-0:5.52-4.el8*
BluezUbuntubionic*
BluezUbuntudevel*
BluezUbuntuesm-infra/bionic*
BluezUbuntuesm-infra/focal*
BluezUbuntuesm-infra/xenial*
BluezUbuntufocal*
BluezUbuntugroovy*
BluezUbuntuhirsute*
BluezUbuntuimpish*
BluezUbuntujammy*
BluezUbuntutrusty*
BluezUbuntuupstream*
BluezUbuntuxenial*

Potential Mitigations

References

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