CVE-2020-27153

Summary

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.

Affected Software

Weaknesses

• n/a

ADP Enrichment

CVE Program Container

Additional References

• https://github.com/bluez/bluez/commit/5a180f2ec9edfacafd95e5fed20d36fe8e077f07
• https://github.com/bluez/bluez/commit/1cd644db8c23a2f530ddb93cebed7dacc5f5721a
• https://bugzilla.redhat.com/show_bug.cgi?id=1884817
• https://lists.debian.org/debian-lts-announce/2020/10/msg00022.html
• https://security.gentoo.org/glsa/202011-01
• http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00034.html
• http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00036.html
• https://www.debian.org/security/2021/dsa-4951

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: yes
  • Technical Impact: partial

References

• https://github.com/bluez/bluez/commit/5a180f2ec9edfacafd95e5fed20d36fe8e077f07
• https://github.com/bluez/bluez/commit/1cd644db8c23a2f530ddb93cebed7dacc5f5721a
• https://bugzilla.redhat.com/show_bug.cgi?id=1884817
• https://lists.debian.org/debian-lts-announce/2020/10/msg00022.html
• https://security.gentoo.org/glsa/202011-01
• http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00034.html
• http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00036.html
• https://www.debian.org/security/2021/dsa-4951

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