SUSE update for libnbd

1) Unchecked Return Value

EUVDB-ID: #VU82550

Risk: Medium

CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-5215

CWE-ID: CWE-252 - Unchecked Return Value

Exploit availability: No

Description

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

The vulnerability exists due to improper input validation when handling server responses in NBD client. A remote server can return a block size larger than 2^63 and crash the client.

Mitigation

Update the affected package libnbd to the latest version.

Vulnerable software versions

openSUSE Leap: 15.3 - 15.5

libnbd-bash-completion: before 1.18.1-150300.8.15.1

libnbd0-debuginfo: before 1.18.1-150300.8.15.1

libnbd: before 1.18.1-150300.8.15.1

nbdfuse-debuginfo: before 1.18.1-150300.8.15.1

nbdfuse: before 1.18.1-150300.8.15.1

python3-libnbd: before 1.18.1-150300.8.15.1

python3-libnbd-debuginfo: before 1.18.1-150300.8.15.1

libnbd-devel: before 1.18.1-150300.8.15.1

libnbd-debugsource: before 1.18.1-150300.8.15.1

libnbd0: before 1.18.1-150300.8.15.1

libnbd-debuginfo: before 1.18.1-150300.8.15.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20234222-1/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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