CVE-2020-27634

CVE-2020-27634 affects Contiki OS families (notably uIP-Contiki-OS, Contiki-NG, and related uIP implementations) where TCP Initial Sequence Numbers are generated with insufficient randomness. The flaw, described across multiple sources (CISA ICS advisory Update B and Red Hat/NVD entries), can all...

CVE-2020-27634

In Contiki 4.5, TCP ISNs are improperly random...

CVE-2023-37281

Contiki-NG is an operating system for internet-of-things devices. In versions 4.9 and prior, when processing the various IPv6 header fields during IPHC header decompression, Contiki-NG confirms the received packet buffer contains enough data as needed for that field. But no similar check is done...

CVE-2023-37459

Contiki-NG is an operating system for internet-of-things devices. In versions 4.9 and prior, when a packet is received, the Contiki-NG network stack attempts to start the periodic TCP timer if it is a TCP packet with the SYN flag set. But the implementation does not first verify that a full TCP...

Design/Logic Flaw

Contiki-NG is an operating system for internet-of-things devices. In versions 4.9 and prior, when a packet is received, the Contiki-NG network stack attempts to start the periodic TCP timer if it is a TCP packet with the SYN flag set. But the implementation does not first verify that a full TCP...

Out-of-bounds

Contiki-NG is an operating system for internet-of-things devices. In versions 4.9 and prior, when processing the various IPv6 header fields during IPHC header decompression, Contiki-NG confirms the received packet buffer contains enough data as needed for that field. But no similar check is done...

CVE-2023-37459 Out-of-bounds read when processing a received IPv6 packet

Contiki-NG is an operating system for internet-of-things devices. In versions 4.9 and prior, when a packet is received, the Contiki-NG network stack attempts to start the periodic TCP timer if it is a TCP packet with the SYN flag set. But the implementation does not first verify that a full TCP...

CVE-2023-37459 Out-of-bounds read when processing a received IPv6 packet

Contiki-NG is an operating system for internet-of-things devices. In versions 4.9 and prior, when a packet is received, the Contiki-NG network stack attempts to start the periodic TCP timer if it is a TCP packet with the SYN flag set. But the implementation does not first verify that a full TCP...

CVE-2023-37459

CVE-2023-37459 maps to Contiki-NG ≤ 4.9, where the network stack, on receiving a TCP packet with the SYN flag, may access the TCP header before ensuring it is complete. This can trigger an out-of-bounds read from the packet buffer due to reading the flags field in check_for_tcp_syn. The result is...

CVE-2023-37459 Out-of-bounds read when processing a received IPv6 packet

Contiki-NG is an operating system for internet-of-things devices. In versions 4.9 and prior, when a packet is received, the Contiki-NG network stack attempts to start the periodic TCP timer if it is a TCP packet with the SYN flag set. But the implementation does not first verify that a full TCP...

CVE-2023-37281 Out-of-bounds read during IPHC address decompression

Contiki-NG is an operating system for internet-of-things devices. In versions 4.9 and prior, when processing the various IPv6 header fields during IPHC header decompression, Contiki-NG confirms the received packet buffer contains enough data as needed for that field. But no similar check is done...

CVE-2023-37281

CVE-2023-37281 affects Contiki-NG (versions ≤ 4.9) where IPHC header decompression lacks a bounds check before decoding the IPv6 address. An attacker-controlled value (postcount) can trigger an out-of-bounds read via the line memcpy(&ipaddr->u8[16 - postcount], iphc_ptr, postcount);, enabling ...

CVE-2023-37281 Out-of-bounds read during IPHC address decompression

Contiki-NG is an operating system for internet-of-things devices. In versions 4.9 and prior, when processing the various IPv6 header fields during IPHC header decompression, Contiki-NG confirms the received packet buffer contains enough data as needed for that field. But no similar check is done...

CVE-2023-37281 Out-of-bounds read during IPHC address decompression

Contiki-NG is an operating system for internet-of-things devices. In versions 4.9 and prior, when processing the various IPv6 header fields during IPHC header decompression, Contiki-NG confirms the received packet buffer contains enough data as needed for that field. But no similar check is done...

PT-2023-25881 · Unknown · Contiki-Ng

Name of the Vulnerable Software and Affected Versions: Contiki-NG versions 4.9 and prior Description: Contiki-NG is an operating system for internet-of-things devices. The issue arises during IPHC header decompression when processing IPv6 header fields. Specifically, the system fails to check if...

PT-2023-25973 · Unknown · Contiki-Ng

Name of the Vulnerable Software and Affected Versions: Contiki-NG versions 4.9 and prior Description: The issue arises when the Contiki-NG network stack attempts to start the periodic TCP timer for a TCP packet with the SYN flag set without verifying that a full TCP header has been received. This...

Contiki-NG Buffer Error Vulnerability

Contiki-NG is an open source cross-platform operating system for next-generation IoT Internet of Things devices. Contiki-NG 4.9 and earlier versions suffer from a buffer error vulnerability that stems from allowing an attacker to inject TCP packets resulting in out-of-bounds buffer reads...

Contiki-NG Buffer Error Vulnerability

Contiki-NG is an open source cross-platform operating system for next-generation IoT Internet of Things devices. A buffer error vulnerability exists in Contiki-NG 4.9 and earlier versions, which stems from allowing an attacker to inject packets resulting in out-of-bounds buffer reads...

Huawei EulerOS: Security Advisory for open-iscsi (EulerOS-SA-2023-2453)

The remote host is missing an update for the Huawei EulerOS SPDX-FileCopyrightText: 2023 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

EulerOS Virtualization 2.10.0 : open-iscsi (EulerOS-SA-2023-2478)

According to the versions of the open-iscsi package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - An issue was discovered in uIP 1.0, as used in Contiki 3.0 and other products. When the Urgent flag is set in a TCP packet, an...