More on the Chinese Zero-Day Microsoft Exchange Hack

Nick Weaver has an excellent post on the Microsoft Exchange hack: The investigative journalist Brian Krebs has produced a handy timeline of events and a few things stand out from the chronology. The attacker was first detected by one group on Jan. 5 and another on Jan. 6, and Microsoft acknowledg...

CVE-2020-27632: Undefined Security Weakness

In SIMATIC MV400 family versions prior to v7.0.6, the ISN generator is initialized with a constant value and has constant increments. An attacker could predict and hijack TCP sessions...

Contiki OS ISN Generator Unauthorized Access

The vulnerability of the ISN generator implementation used in the Contiki OS and uIP is related to the use of insufficiently random values. Exploiting this vulnerability could allow an attacker operating remotely to gain unauthorized access to protected information...

PicoTCP ISN Generator Unauthorized Access

The vulnerability of the ISN generator implementation in the PicoTCP protocol stack is related to the use of insufficiently random values. Exploiting this vulnerability could allow a malicious actor to gain unauthorized access to protected information...

PT-2021-2228 · Oryx · Cyclonetcp

Name of the Vulnerable Software and Affected Versions: Oryx CycloneTCP version 1.9.6 Description: The issue is related to the improper randomness of TCP Initial Sequence Numbers ISNs in the CycloneTCP stack implementation. This could allow a remote attacker to gain unauthorized access to protecte...

PT-2021-2229 · Siemens · Simatic Mv400

Name of the Vulnerable Software and Affected Versions: SIMATIC MV400 family versions prior to v7.0.6 Description: The issue is related to the implementation of the ISN generator in the TI-NDKTCPIP protocol stack, which uses insufficiently random values. This could allow a remote attacker to predi...

PT-2021-2232 · Picotcp · Picotcp

Name of the Vulnerable Software and Affected Versions: PicoTCP version 1.7.0 Description: The issue is related to the improper randomness of TCP Initial Sequence Numbers ISNs in the PicoTCP stack implementation. This could potentially allow a remote attacker to gain unauthorized access to protect...

PT-2021-2231 · Contiki · Contiki

Name of the Vulnerable Software and Affected Versions: Contiki version 4.5 Description: The issue is related to the improper randomness of TCP Initial Sequence Numbers ISNs in the Contiki OS uIP protocol stack implementation. This could allow a remote attacker to gain unauthorized access to...

PT-2021-2230 · Fnet · Fnet

Name of the Vulnerable Software and Affected Versions: FNET version 4.6.3 Description: The issue is related to the improper randomness of TCP Initial Sequence Numbers ISNs in the FNET protocol stack implementation. This could allow a remote attacker to gain unauthorized access to protected...

PT-2021-2233 · Microchip · Mplab Net

Name of the Vulnerable Software and Affected Versions: Microchip MPLAB Net version 3.6.1 Description: The issue is related to the improper randomness of TCP Initial Sequence Numbers ISNs in the implementation of the MPLAB Net protocol stack. This could allow a remote attacker to gain unauthorized...

MGASA-2021-0109 Updated screen packages fix security vulnerability

Felix Weinmann reported a flaw in the handling of combining characters in screen, which can result in denial of service, or potentially the execution of arbitrary code via a specially crafted UTF-8 character sequence CVE-2021-26937...

Updated screen packages fix security vulnerability

Felix Weinmann reported a flaw in the handling of combining characters in screen, which can result in denial of service, or potentially the execution of arbitrary code via a specially crafted UTF-8 character sequence CVE-2021-26937...

PT-2021-2224 · Silicon · Uc/Tcp-Ip

Name of the Vulnerable Software and Affected Versions: Silicon Labs uC/TCP-IP version 3.6.0 Description: The issue is related to the improper randomness of TCP Initial Sequence Numbers ISNs in the stack protocol used by uC/OS and uC/TCP-IP. This could allow a remote attacker to gain unauthorized...

Xterm Input Validation Error Vulnerability

XTerm is a terminal emulator on the X Window System used to provide multiple independent SHELL inputs and outputs. An input validation error vulnerability exists in Xterm that originates from allowing remote attackers to cause a denial of service segmentation error or possibly have unspecified...

uC/OS uC/TCP-IP Unauthorized Access

The vulnerability of the ISN generator implementation in the uC/OS and uC/TCP-IP protocols is related to the use of insufficiently random values. Exploiting this vulnerability can allow an attacker operating remotely to gain unauthorized access to protected information...

NutOS ISN IP pool generator Randomness

The vulnerability of the ISN IP pool generator implemented in NutOS and Nut/Net relates to the use of insufficiently random values. Exploiting this vulnerability could allow an attacker operating remotely to gain unauthorized access to protected information...

EulerOS Virtualization 3.0.6.6 : nss (EulerOS-SA-2021-1502)

According to the versions of the nss packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - A flaw was found in the way NSS handled CCS ChangeCipherSpec messages in TLS 1.3. This flaw allows a remote attacker to send multipl...

MGASA-2021-0094 Updated xterm package fixes security vulnerability

xterm through Patch 365 allows remote attackers to cause a denial of service segmentation fault or possibly have unspecified other impact via a crafted UTF-8 character sequence. CVE-2021-27135...

PT-2024-11038 · Linux +4 · Linux Kernel +4

Name of the Vulnerable Software and Affected Versions: Linux kernel affected versions not specified Description: A vulnerability has been resolved in the Linux kernel related to the TCP QUEUE SEQ option. The issue was reported by Qingyu Li, who found a syzkaller bug that changes the RCV SEQ after...

CVE-2020-11287: Observable Discrepancy

Allowing RTT frames to be linked with non randomized MAC address by comparing the sequence numbers can lead to information disclosure. in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer Electronics Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT,...