Metadata-Private Messaging without Coordination

For those seeking end-to-end private communication free from pervasive metadata tracking and censorship, the Tor network has been the de-facto choice in practice, despite its susceptibility to traffic analysis attacks. Recently, numerous metadata-private messaging proposals have emerged with the...

AZL-56898 CVE-2025-26466 affecting package openssh for versions less than 9.8p1-3

A flaw was found in the OpenSSH package. For each ping packet the SSH server receives, a pong packet is allocated in a memory buffer and stored in a queue of packages. It is only freed when the server/client key exchange has finished. A malicious client may keep sending such packages, leading to ...

DEBIAN-CVE-2025-26466

A flaw was found in the OpenSSH package. For each ping packet the SSH server receives, a pong packet is allocated in a memory buffer and stored in a queue of packages. It is only freed when the server/client key exchange has finished. A malicious client may keep sending such packages, leading to ...

ALPINE-CVE-2025-26466

A flaw was found in the OpenSSH package. For each ping packet the SSH server receives, a pong packet is allocated in a memory buffer and stored in a queue of packages. It is only freed when the server/client key exchange has finished. A malicious client may keep sending such packages, leading to ...

CVE-2025-26466

A flaw was found in the OpenSSH package. For each ping packet the SSH server receives, a pong packet is allocated in a memory buffer and stored in a queue of packages. It is only freed when the server/client key exchange has finished. A malicious client may keep sending such packages, leading to ...

SUSE CVE-2025-26466

A flaw was found in the OpenSSH package. For each ping packet the SSH server receives, a pong packet is allocated in a memory buffer and stored in a queue of packages. It is only freed when the server/client key exchange has finished. A malicious client may keep sending such packages, leading to ...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the sshpacketreadpollseqnr function in packet.c. Ping packets SSH2MSGPING received without authentication buffer but neither send nor free PONG responses, which can consume unlimit...

Astra Linux – Vulnerability in OpenSSH

A flaw was discovered in the OpenSSH package. For each ping packet received by the SSH server, a pong packet is allocated in a memory buffer and stored in a queue of packets. This memory buffer is only freed after the server/client key exchange is completed. A malicious client may continue to sen...

PT-2024-25032 · Yamux · Yamux

Name of the Vulnerable Software and Affected Versions: Yamux affected versions not specified Description: Yamux is a stream multiplexer over reliable, ordered connections such as TCP/IP. The Rust implementation of the Yamux stream multiplexer uses a vector for pending frames, which is not bounded...

SUSE CVE-2021-33586

InspIRCd 3.8.0 through 3.9.x before 3.10.0 allows any user able to connect to the server to access recently deallocated memory, aka the "malformed PONG" issue...

undertow: Double AJP response for 400 from EAP 7 results in CPING failures

A flaw was found in Undertow. For an AJP 400 response, EAP 7 is improperly sending two response packets, and those packets have the reuse flag set even though JBoss EAP closes the connection. A failure occurs when the connection is reused after a 400 by CPING since it reads in the second...

CVE-2022-1319

A flaw was found in Undertow. For an AJP 400 response, EAP 7 is improperly sending two response packets, and those packets have the reuse flag set even though JBoss EAP closes the connection. A failure occurs when the connection is reused after a 400 by CPING since it reads in the second...

UBUNTU-CVE-2022-1319

A flaw was found in Undertow. For an AJP 400 response, EAP 7 is improperly sending two response packets, and those packets have the reuse flag set even though JBoss EAP closes the connection. A failure occurs when the connection is reused after a 400 by CPING since it reads in the second...

CVE-2021-3690

A flaw was found in Undertow. A buffer leak on the incoming WebSocket PONG message may lead to memory exhaustion. This flaw allows an attacker to cause a denial of service. The highest threat from this vulnerability is availability...

CVE-2021-3690

A flaw was found in Undertow. A buffer leak on the incoming WebSocket PONG message may lead to memory exhaustion. This flaw allows an attacker to cause a denial of service. The highest threat from this vulnerability is availability...

CVE-2021-3690

A flaw was found in Undertow. A buffer leak on the incoming WebSocket PONG message may lead to memory exhaustion. This flaw allows an attacker to cause a denial of service. The highest threat from this vulnerability is availability...

DEBIAN-CVE-2021-3690

A flaw was found in Undertow. A buffer leak on the incoming WebSocket PONG message may lead to memory exhaustion. This flaw allows an attacker to cause a denial of service. The highest threat from this vulnerability is availability...

Design/Logic Flaw

A flaw was found in Undertow. A buffer leak on the incoming WebSocket PONG message may lead to memory exhaustion. This flaw allows an attacker to cause a denial of service. The highest threat from this vulnerability is availability...

UBUNTU-CVE-2021-3690

A flaw was found in Undertow. A buffer leak on the incoming WebSocket PONG message may lead to memory exhaustion. This flaw allows an attacker to cause a denial of service. The highest threat from this vulnerability is availability...

CVE-2021-3690

CVE-2021-3690 affects Undertow: a buffer leak on the incoming WebSocket PONG message can cause memory exhaustion leading to DoS. The vulnerability impacts Undertow-based components (WebSocket handling). A security update/patch for Undertow is available per OSV/OESA entries; exploit details are no...