An Open-iSCSI security update has been released for Ubuntu Linux 16.04 LTS, 18.04 LTS, and 20.04 LTS.

[USN-6259-1] Open-iSCSI vulnerabilities

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Ubuntu Security Notice USN-6259-1
July 27, 2023

open-iscsi vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS (Available with Ubuntu Pro)
- Ubuntu 16.04 LTS (Available with Ubuntu Pro)

Summary:

Several security issues were fixed in Open-iSCSI.

Software Description:
- open-iscsi: Open Source iSCSI implementation

Details:

Jos Wetzels, Stanislav Dashevskyi, and Amine Amri discovered that
Open-iSCSI incorrectly handled certain checksums for IP packets.
An attacker could possibly use this issue to expose sensitive information.
(CVE-2020-13987)

Jos Wetzels, Stanislav Dashevskyi, Amine Amri discovered that
Open-iSCSI incorrectly handled certain parsing TCP MSS options.
An attacker could possibly use this issue to cause a crash or cause
unexpected behavior. (CVE-2020-13988)

Amine Amri and Stanislav Dashevskyi discovered that Open-iSCSI
incorrectly handled certain TCP data. An attacker could possibly
use this issue to expose sensitive information. (CVE-2020-17437)

Update instructions:

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

Ubuntu 20.04 LTS:
open-iscsi 2.0.874-7.1ubuntu6.4

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
open-iscsi 2.0.874-5ubuntu2.11+esm1

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
open-iscsi 2.0.873+git0.3b4b4500-14ubuntu3.7+esm1

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

References:
https://ubuntu.com/security/notices/USN-6259-1
CVE-2020-13987, CVE-2020-13988, CVE-2020-17437

Package Information:
https://launchpad.net/ubuntu/+source/open-iscsi/2.0.874-7.1ubuntu6.4