Sprecher Automation SPRECON-E TCP SACK PANIC (CVE-2019-11479)

Jonathan Looney discovered that the Linux kernel default MSS is hard-coded to 48 bytes. This allows a remote peer to fragment TCP resend queues significantly more than if a larger MSS were enforced. A remote attacker could use this to cause a denial of service. This has been fixed in stable kerne...

USN-6259-1: Open-iSCSI vulnerabilities

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...

How to Change the Maximum Segment Size on a NetScaler Appliance

This article describes how to change the Maximum Segment Size MSS for all sourced packets from a NetScaler appliance. Requirements Command line access to the NetScaler appliance through the console or a Secure Shell SSH client General knowledge of the NetScaler Command Line Interface CLI and UNIX...

CVE-2023-35847

VirtualSquare picoTCP aka PicoTCP-NG through 2.1 does not have an MSS lower bound e.g., it could be zero...

CVE-2023-35848

VirtualSquare picoTCP aka PicoTCP-NG through 2.1 lacks certain size calculations before attempting to set a value of an mss structure member...

Code injection

VirtualSquare picoTCP aka PicoTCP-NG through 2.1 lacks certain size calculations before attempting to set a value of an mss structure member...

Design/Logic Flaw

VirtualSquare picoTCP aka PicoTCP-NG through 2.1 does not have an MSS lower bound e.g., it could be zero...

CVE-2023-35848

VirtualSquare picoTCP aka PicoTCP-NG through 2.1 lacks certain size calculations before attempting to set a value of an mss structure member...

Virtualsquare picoTCP 安全漏洞

Virtualsquare picoTCP is a free offshoot of PicoTCP from the Virtualsquare Personal Developer, originally distributed by Altran.be. A security vulnerability exists in VirtualSquare picoTCP version 2.1 and earlier versions that stems from the absence of certain calculations before attempting to se...

CVE-2023-35847

CVE-2023-35847 affects VirtualSquare picoTCP (aka PicoTCP-NG) up to version 2.1, where the MSS lower bound is not enforced (could be zero). The provided documents consistently describe the vulnerability as stemming from the lack of an MSS lower bound, but do not specify an affected vendor/version...

PT-2023-25340 · Virtualsquare · Virtualsquare Picotcp

Name of the Vulnerable Software and Affected Versions: VirtualSquare picoTCP aka PicoTCP-NG versions through 2.1 Description: The issue is related to the lack of a Maximum Segment Size MSS lower bound, which could potentially be set to zero. This affects the VirtualSquare picoTCP aka PicoTCP-NG...

CVE-2023-35847

VirtualSquare picoTCP aka PicoTCP-NG through 2.1 does not have an MSS lower bound e.g., it could be zero...

CVE-2023-35847

VirtualSquare picoTCP aka PicoTCP-NG through 2.1 does not have an MSS lower bound e.g., it could be zero...

CVE-2023-35847

VirtualSquare picoTCP aka PicoTCP-NG through 2.1 does not have an MSS lower bound e.g., it could be zero...

CVE-2023-34100

Contiki-NG is an open-source, cross-platform operating system for IoT devices. When reading the TCP MSS option value from an incoming packet, the Contiki-NG OS does not verify that certain buffer indices to read from are within the bounds of the IPv6 packet buffer, uipbuf. In particular, there is...

CVE-2023-34100

Contiki-NG vulnerability CVE-2023-34100 causes a 2-byte out-of-bounds read in the IPv6/TCP MSS handling (uip6.c) when reading the MSS option, due to unsafe buffer indexing in uip_buf. The issue is triggered by indexing UIP_IPTCPH_LEN + 2 + c and UIP_IPTCPH_LEN + 3 + c beyond available data. Conti...

CVE-2023-34100 Out-of-Bounds Read in contiki-ng

Contiki-NG is an open-source, cross-platform operating system for IoT devices. When reading the TCP MSS option value from an incoming packet, the Contiki-NG OS does not verify that certain buffer indices to read from are within the bounds of the IPv6 packet buffer, uipbuf. In particular, there is...

CVE-2023-34100 Out-of-Bounds Read in contiki-ng

Contiki-NG is an open-source, cross-platform operating system for IoT devices. When reading the TCP MSS option value from an incoming packet, the Contiki-NG OS does not verify that certain buffer indices to read from are within the bounds of the IPv6 packet buffer, uipbuf. In particular, there is...

CVE-2023-34100 Out-of-Bounds Read in contiki-ng

Contiki-NG is an open-source, cross-platform operating system for IoT devices. When reading the TCP MSS option value from an incoming packet, the Contiki-NG OS does not verify that certain buffer indices to read from are within the bounds of the IPv6 packet buffer, uipbuf. In particular, there is...

kernel: tcp: Fix data-races around sysctl_tcp_min_snd_mss.

In the Linux kernel, the following vulnerability has been resolved: tcp: Fix data-races around sysctltcpminsndmss. While reading sysctltcpminsndmss, it can be changed concurrently. Thus, we need to add READONCE to its readers...