#VU17097 Memory corruption in Ceph - CVE-2018-16846

Vulnerability identifier: #VU17097

Vulnerability risk: Low

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-16846

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Ceph
Server applications / Other server solutions

Vendor: Red Hat Inc.

Description

The vulnerability allows a remote authenticated attacker to perform a denial of service (DoS) attack.

The vulnerability exists in the RADOS Gateway (RGW) code base due to boundary error in the ListBucket max-keys function during bucket listing operations. A remote attacker with Ceph RGW user permissions can trigger memory corruption and perform a denial of service attack against object maps (OMAPs) holding bucket indexes.

Mitigation
Update to version 13.2.4.

Vulnerable software versions

Ceph: 12.1.0 - 13.2.3

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External links
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16846
https://ceph.com/releases/13-2-4-mimic-released/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.