Resource management error in Ceph - CVE-2020-1700
Published: March 18, 2020
Vulnerability identifier: #VU26150
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-1700
CWE-ID: CWE-399
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to an error while processing unexpected disconnects within the Ceph RGW Beast front-end (/rgw/rgw_asio_frontend.cc). A remote attacker can perform a denial of service (DoS) attack by triggering creation of numerous CLOSE_WAIT sockets and exhausting all available system resources.
Affected software
Ceph
ceph (Ubuntu package)
ceph (Alpine package)
Opensuse
ceph (Ubuntu package)
ceph (Alpine package)
Opensuse
How to mitigate CVE-2020-1700
Install updates from vendor's website.
Ceph - update to 15.1.1
ceph (Ubuntu package) - addressed in versions 12.2.12-0ubuntu0.18.04.5, 14.2.4-0ubuntu0.19.10.2
ceph (Alpine package) - update to 14.2.7-r0
ceph (Ubuntu package) - addressed in versions 12.2.12-0ubuntu0.18.04.5, 14.2.4-0ubuntu0.19.10.2
ceph (Alpine package) - update to 14.2.7-r0