Out-of-bounds read in uIP and Contiki OS - CVE-2020-13987

Vulnerability identifier: #VU59117

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-2020-13987

CWE-ID: CWE-125

Exploitation vector: Remote access

Exploit availability: No public exploit available

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

The vulnerability exists due to a boundary condition in the uIP TCP/IP Stack component when calculating the checksums for IP packets in upper_layer_chksum in net/ipv4/uip.c. A remote attacker can send specially crafted traffic to the system, trigger an out-of-bounds read error and perform a denial of service (DoS) attack.

uIP
Contiki OS
SUSE Manager Server
SUSE Manager Retail Branch Server
SUSE Manager Proxy
SUSE CaaS Platform
SUSE Enterprise Storage
SUSE OpenStack Cloud
SUSE OpenStack Cloud Crowbar
SUSE Linux Enterprise Server
SUSE Linux Enterprise Server for SAP
SUSE Linux Enterprise High Performance Computing
SUSE Linux Enterprise Module for Legacy Software
Ubuntu
open-iscsi (Ubuntu package)
iscsiuio
iscsiuio-debuginfo
libopeniscsiusr0_2_0
libopeniscsiusr0_2_0-debuginfo
open-iscsi
open-iscsi-debuginfo
open-iscsi-debugsource
open-iscsi-devel
Dell EMC Unity XT Operating Environment (OE)
Dell EMC Unity Operating Environment (OE)
Dell EMC Unity VSA Operating Environment (OE)

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

open-iscsi (Ubuntu package) - addressed in versions Ubuntu Pro, 2.0.874-7.1ubuntu6.4
iscsiuio - addressed in versions 0.7.8.2-12.27.2, 0.7.8.2-13.42.1, 0.7.8.2-53.34.1
iscsiuio-debuginfo - addressed in versions 0.7.8.2-12.27.2, 0.7.8.2-13.42.1, 0.7.8.2-53.34.1
libopeniscsiusr0_2_0 - addressed in versions 2.0.876-12.27.2, 2.0.876-13.42.1, 2.0.876-53.34.1
libopeniscsiusr0_2_0-debuginfo - addressed in versions 2.0.876-12.27.2, 2.0.876-13.42.1, 2.0.876-53.34.1
open-iscsi - addressed in versions 2.0.876-12.27.2, 2.0.876-13.42.1, 2.0.876-53.34.1
open-iscsi-debuginfo - addressed in versions 2.0.876-12.27.2, 2.0.876-13.42.1, 2.0.876-53.34.1
open-iscsi-debugsource - addressed in versions 2.0.876-12.27.2, 2.0.876-13.42.1, 2.0.876-53.34.1
open-iscsi-devel - update to 2.0.876-13.42.1
Dell EMC Unity XT Operating Environment (OE) - update to 5.1.2.0.5.007
Dell EMC Unity Operating Environment (OE) - update to 5.1.2.0.5.007
Dell EMC Unity VSA Operating Environment (OE) - update to 5.1.2.0.5.007

• https://cert-portal.siemens.com/productcert/pdf/ssa-541018.pdf
• https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01
• https://www.kb.cert.org/vuls/id/815128

• Multiple vulnerabilities in uIP and Contiki OS
• Multiple vulnerabilities in Dell EMC Unity
• SUSE update for open-iscsi
• SUSE update for open-iscsi
• SUSE update for open-iscsi
• Ubuntu update for open-iscsi