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Ubuntu 20.04 LTS USN-4706-1 High Severity: Ceph Access Attacks

ubuntu
Calendar Grey January 28, 2021
Dist Ubuntu Esm H88
Investigate Ubuntu Security Notice USN-4706-1 targeting significant Ceph security flaws to enhance system administration safety.
Several security issues were fixed in Ceph.

Summary

Several security issues were fixed in Ceph.

Software Description:

- ceph: distributed storage and file system

Details:

Olle Segerdahl found that ceph-mon and ceph-mgr daemons did not properly

restrict access, resulting in gaining access to unauthorized resources. An

authenticated user could use this vulnerability to modify the configuration and

possibly conduct further attacks. (CVE-2020-10736)

Adam Mohammed found that Ceph Object Gateway was vulnerable to HTTP header

injection via a CORS ExposeHeader tag. An attacker could use this to gain access

or cause a crash. (CVE-2020-10753)

Ilya Dryomov found that Cephx authentication did not verify Ceph clients

correctly and was then vulnerable to replay attacks in Nautilus. An attacker

could use the Ceph cluster network to authenticate via a packet sniffer and

perform actions. This issue is a reintroduction of CVE-2018-1128.

(CVE-2020-25660)

Topics%20covered

Topics Covered

security advisory unauthorized access high severity critical update instructions ubuntu ceph ceph access ceph issue

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 20.10:
  ceph                            15.2.7-0ubuntu0.20.10.3
  ceph-base                       15.2.7-0ubuntu0.20.10.3
  ceph-common                     15.2.7-0ubuntu0.20.10.3

Ubuntu 20.04 LTS:
  ceph                            15.2.7-0ubuntu0.20.04.2
  ceph-base                       15.2.7-0ubuntu0.20.04.2
  ceph-common                     15.2.7-0ubuntu0.20.04.2

In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-4706-1

CVE-2020-10736, CVE-2020-10753, CVE-2020-25660

January 28, 2021

Topics%20covered

Topics Covered

security advisory unauthorized access high severity critical update instructions ubuntu ceph ceph access ceph issue

Package Information

https://launchpad.net/ubuntu/+source/ceph/15.2.7-0ubuntu0.20.10.3
https://launchpad.net/ubuntu/+source/ceph/15.2.7-0ubuntu0.20.04.2

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