CVE-2020-27153

moderate-risk
Published 2020-10-15

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.

Do I need to act?

~
2.0% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.6/10 High
NETWORK / LOW complexity

Affected Products (5)

Affected Vendors

Debian Opensuse Bluez

References (16)

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
Third Party Advisory https://security.gentoo.org/glsa/202011-01
Third Party Advisory https://www.debian.org/security/2021/dsa-4951
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
Third Party Advisory https://security.gentoo.org/glsa/202011-01
Third Party Advisory https://www.debian.org/security/2021/dsa-4951
46
/ 100
moderate-risk
Severity 29/34 · Critical
Exploitability 5/34 · Minimal
Exposure 12/34 · Low