Vulnerabilities (CVE)

Filtered by vendor Openbsd Subscribe
Total 367 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2016-3115 2 Openbsd, Oracle 2 Openssh, Vm Server 2026-06-17 5.5 MEDIUM 6.4 MEDIUM
Multiple CRLF injection vulnerabilities in session.c in sshd in OpenSSH before 7.2p2 allow remote authenticated users to bypass intended shell-command restrictions via crafted X11 forwarding data, related to the (1) do_authenticated1 and (2) session_x11_req functions.
CVE-2016-20012 2 Netapp, Openbsd 5 Clustered Data Ontap, Hci Management Node, Ontap Select Deploy Administration Utility and 2 more 2026-06-17 4.3 MEDIUM 5.3 MEDIUM
OpenSSH through 8.7 allows remote attackers, who have a suspicion that a certain combination of username and public key is known to an SSH server, to test whether this suspicion is correct. This occurs because a challenge is sent only when that combination could be valid for a login session. NOTE: the vendor does not recognize user enumeration as a vulnerability for this product
CVE-2016-1908 4 Debian, Openbsd, Oracle and 1 more 9 Debian Linux, Openssh, Linux and 6 more 2026-06-17 7.5 HIGH 9.8 CRITICAL
The client in OpenSSH before 7.2 mishandles failed cookie generation for untrusted X11 forwarding and relies on the local X11 server for access-control decisions, which allows remote X11 clients to trigger a fallback and obtain trusted X11 forwarding privileges by leveraging configuration issues on this X11 server, as demonstrated by lack of the SECURITY extension on this X11 server.
CVE-2016-1907 1 Openbsd 1 Openssh 2026-06-17 5.0 MEDIUM 5.3 MEDIUM
The ssh_packet_read_poll2 function in packet.c in OpenSSH before 7.1p2 allows remote attackers to cause a denial of service (out-of-bounds read and application crash) via crafted network traffic.
CVE-2016-10708 4 Canonical, Debian, Netapp and 1 more 12 Ubuntu Linux, Debian Linux, Cloud Backup and 9 more 2026-06-17 5.0 MEDIUM 7.5 HIGH
sshd in OpenSSH before 7.4 allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via an out-of-sequence NEWKEYS message, as demonstrated by Honggfuzz, related to kex.c and packet.c.
CVE-2016-10012 1 Openbsd 1 Openssh 2026-06-17 7.2 HIGH 7.8 HIGH
The shared memory manager (associated with pre-authentication compression) in sshd in OpenSSH before 7.4 does not ensure that a bounds check is enforced by all compilers, which might allows local users to gain privileges by leveraging access to a sandboxed privilege-separation process, related to the m_zback and m_zlib data structures.
CVE-2016-10011 1 Openbsd 1 Openssh 2026-06-17 2.1 LOW 6.2 MEDIUM
authfile.c in sshd in OpenSSH before 7.4 does not properly consider the effects of realloc on buffer contents, which might allow local users to obtain sensitive private-key information by leveraging access to a privilege-separated child process.
CVE-2016-10010 1 Openbsd 1 Openssh 2026-06-17 6.9 MEDIUM 7.0 HIGH
sshd in OpenSSH before 7.4, when privilege separation is not used, creates forwarded Unix-domain sockets as root, which might allow local users to gain privileges via unspecified vectors, related to serverloop.c.
CVE-2016-10009 1 Openbsd 1 Openssh 2026-06-17 7.5 HIGH 7.3 HIGH
Untrusted search path vulnerability in ssh-agent.c in ssh-agent in OpenSSH before 7.4 allows remote attackers to execute arbitrary local PKCS#11 modules by leveraging control over a forwarded agent-socket.
CVE-2016-0778 5 Apple, Hp, Openbsd and 2 more 6 Mac Os X, Virtual Customer Access System, Openssh and 3 more 2026-06-17 4.6 MEDIUM 8.1 HIGH
The (1) roaming_read and (2) roaming_write functions in roaming_common.c in the client in OpenSSH 5.x, 6.x, and 7.x before 7.1p2, when certain proxy and forward options are enabled, do not properly maintain connection file descriptors, which allows remote servers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact by requesting many forwardings.
CVE-2016-0777 5 Apple, Hp, Openbsd and 2 more 7 Mac Os X, Remote Device Access Virtual Customer Access System, Openssh and 4 more 2026-06-17 4.0 MEDIUM 6.5 MEDIUM
The resend_bytes function in roaming_common.c in the client in OpenSSH 5.x, 6.x, and 7.x before 7.1p2 allows remote servers to obtain sensitive information from process memory by requesting transmission of an entire buffer, as demonstrated by reading a private key.
CVE-2015-8325 3 Canonical, Debian, Openbsd 5 Ubuntu Core, Ubuntu Linux, Ubuntu Touch and 2 more 2026-06-17 7.2 HIGH 7.8 HIGH
The do_setup_env function in session.c in sshd in OpenSSH through 7.2p2, when the UseLogin feature is enabled and PAM is configured to read .pam_environment files in user home directories, allows local users to gain privileges by triggering a crafted environment for the /bin/login program, as demonstrated by an LD_PRELOAD environment variable.
CVE-2015-7687 2 Fedoraproject, Openbsd 2 Fedora, Opensmtpd 2026-06-17 7.5 HIGH 9.8 CRITICAL
Use-after-free vulnerability in OpenSMTPD before 5.7.2 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via vectors involving req_ca_vrfy_smtp and req_ca_vrfy_mta.
CVE-2015-6565 1 Openbsd 1 Openssh 2026-06-17 7.2 HIGH N/A
sshd in OpenSSH 6.8 and 6.9 uses world-writable permissions for TTY devices, which allows local users to cause a denial of service (terminal disruption) or possibly have unspecified other impact by writing to a device, as demonstrated by writing an escape sequence.
CVE-2015-6564 1 Openbsd 1 Openssh 2026-06-17 6.9 MEDIUM 7.0 HIGH
Use-after-free vulnerability in the mm_answer_pam_free_ctx function in monitor.c in sshd in OpenSSH before 7.0 on non-OpenBSD platforms might allow local users to gain privileges by leveraging control of the sshd uid to send an unexpectedly early MONITOR_REQ_PAM_FREE_CTX request.
CVE-2015-6563 2 Apple, Openbsd 2 Mac Os X, Openssh 2026-06-17 1.9 LOW 6.4 MEDIUM
The monitor component in sshd in OpenSSH before 7.0 on non-OpenBSD platforms accepts extraneous username data in MONITOR_REQ_PAM_INIT_CTX requests, which allows local users to conduct impersonation attacks by leveraging any SSH login access in conjunction with control of the sshd uid to send a crafted MONITOR_REQ_PWNAM request, related to monitor.c and monitor_wrap.c.
CVE-2015-5600 1 Openbsd 1 Openssh 2026-06-17 8.5 HIGH 8.1 HIGH
The kbdint_next_device function in auth2-chall.c in sshd in OpenSSH through 6.9 does not properly restrict the processing of keyboard-interactive devices within a single connection, which makes it easier for remote attackers to conduct brute-force attacks or cause a denial of service (CPU consumption) via a long and duplicative list in the ssh -oKbdInteractiveDevices option, as demonstrated by a modified client that provides a different password for each pam element on this list.
CVE-2015-5352 1 Openbsd 1 Openssh 2026-06-17 4.3 MEDIUM N/A
The x11_open_helper function in channels.c in ssh in OpenSSH before 6.9, when ForwardX11Trusted mode is not used, lacks a check of the refusal deadline for X connections, which makes it easier for remote attackers to bypass intended access restrictions via a connection outside of the permitted time window.
CVE-2015-5334 2 Openbsd, Opensuse 2 Libressl, Opensuse 2026-06-17 7.5 HIGH 9.8 CRITICAL
Off-by-one error in the OBJ_obj2txt function in LibreSSL before 2.3.1 allows remote attackers to cause a denial of service (program crash) or possible execute arbitrary code via a crafted X.509 certificate, which triggers a stack-based buffer overflow. Note: this vulnerability exists because of an incorrect fix for CVE-2014-3508.
CVE-2015-5333 2 Openbsd, Opensuse 2 Libressl, Opensuse 2026-06-17 5.0 MEDIUM 7.5 HIGH
Memory leak in the OBJ_obj2txt function in LibreSSL before 2.3.1 allows remote attackers to cause a denial of service (memory consumption) via a large number of ASN.1 object identifiers in X.509 certificates.