Vulnerabilities (CVE)

Filtered by vendor Openbsd Subscribe
Total 358 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2018-20685 9 Canonical, Debian, Fujitsu and 6 more 30 Ubuntu Linux, Debian Linux, M10-1 and 27 more 2026-06-17 2.6 LOW 5.3 MEDIUM
In OpenSSH 7.9, scp.c in the scp client allows remote SSH servers to bypass intended access restrictions via the filename of . or an empty filename. The impact is modifying the permissions of the target directory on the client side.
CVE-2018-15919 2 Netapp, Openbsd 7 Cloud Backup, Cn1610, Cn1610 Firmware and 4 more 2026-06-17 5.0 MEDIUM 5.3 MEDIUM
Remotely observable behaviour in auth-gss2.c in OpenSSH through 7.8 could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. NOTE: the discoverer states 'We understand that the OpenSSH developers do not want to treat such a username enumeration (or "oracle") as a vulnerability.'
CVE-2018-15473 7 Canonical, Debian, Netapp and 4 more 24 Ubuntu Linux, Debian Linux, Aff Baseboard Management Controller and 21 more 2026-06-17 5.0 MEDIUM 5.3 MEDIUM
OpenSSH through 7.7 is prone to a user enumeration vulnerability due to not delaying bailout for an invalid authenticating user until after the packet containing the request has been fully parsed, related to auth2-gss.c, auth2-hostbased.c, and auth2-pubkey.c.
CVE-2018-14775 1 Openbsd 1 Openbsd 2026-06-17 4.9 MEDIUM 5.5 MEDIUM
tss_alloc in sys/arch/i386/i386/gdt.c in OpenBSD 6.2 and 6.3 has a Local Denial of Service (system crash) due to incorrect I/O port access control on the i386 architecture.
CVE-2018-12434 1 Openbsd 1 Libressl 2026-06-17 1.9 LOW 4.7 MEDIUM
LibreSSL before 2.6.5 and 2.7.x before 2.7.4 allows a memory-cache side-channel attack on DSA and ECDSA signatures, aka the Return Of the Hidden Number Problem or ROHNP. To discover a key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.
CVE-2017-8301 1 Openbsd 1 Libressl 2026-06-17 2.6 LOW 5.3 MEDIUM
LibreSSL 2.5.1 to 2.5.3 lacks TLS certificate verification if SSL_get_verify_result is relied upon for a later check of a verification result, in a use case where a user-provided verification callback returns 1, as demonstrated by acceptance of invalid certificates by nginx.
CVE-2017-5850 1 Openbsd 1 Openbsd 2026-06-17 7.8 HIGH 7.5 HIGH
httpd in OpenBSD allows remote attackers to cause a denial of service (memory consumption) via a series of requests for a large file using an HTTP Range header.
CVE-2017-15906 5 Debian, Netapp, Openbsd and 2 more 22 Debian Linux, Active Iq Unified Manager, Cloud Backup and 19 more 2026-06-17 5.0 MEDIUM 5.3 MEDIUM
The process_open function in sftp-server.c in OpenSSH before 7.6 does not properly prevent write operations in readonly mode, which allows attackers to create zero-length files.
CVE-2017-1000373 1 Openbsd 1 Openbsd 2026-06-17 6.4 MEDIUM 6.5 MEDIUM
The OpenBSD qsort() function is recursive, and not randomized, an attacker can construct a pathological input array of N elements that causes qsort() to deterministically recurse N/4 times. This allows attackers to consume arbitrary amounts of stack memory and manipulate stack memory to assist in arbitrary code execution attacks. This affects OpenBSD 6.1 and possibly earlier versions.
CVE-2017-1000372 1 Openbsd 1 Openbsd 2026-06-17 7.5 HIGH 9.8 CRITICAL
A flaw exists in OpenBSD's implementation of the stack guard page that allows attackers to bypass it resulting in arbitrary code execution using setuid binaries such as /usr/bin/at. This affects OpenBSD 6.1 and possibly earlier versions.
CVE-2016-8858 1 Openbsd 1 Openssh 2026-06-17 7.8 HIGH 7.5 HIGH
The kex_input_kexinit function in kex.c in OpenSSH 6.x and 7.x through 7.3 allows remote attackers to cause a denial of service (memory consumption) by sending many duplicate KEXINIT requests. NOTE: a third party reports that "OpenSSH upstream does not consider this as a security issue."
CVE-2016-6522 1 Openbsd 1 Openbsd 2026-06-17 4.9 MEDIUM 5.5 MEDIUM
Integer overflow in the uvm_map_isavail function in uvm/uvm_map.c in OpenBSD 5.9 allows local users to cause a denial of service (kernel panic) via a crafted mmap call, which triggers the new mapping to overlap with an existing mapping.
CVE-2016-6515 2 Fedoraproject, Openbsd 2 Fedora, Openssh 2026-06-17 7.8 HIGH 7.5 HIGH
The auth_password function in auth-passwd.c in sshd in OpenSSH before 7.3 does not limit password lengths for password authentication, which allows remote attackers to cause a denial of service (crypt CPU consumption) via a long string.
CVE-2016-6350 1 Openbsd 1 Openbsd 2026-06-17 4.9 MEDIUM 5.5 MEDIUM
OpenBSD 5.8 and 5.9 allows local users to cause a denial of service (NULL pointer dereference and panic) via a sysctl call with a path starting with 10,9.
CVE-2016-6247 1 Openbsd 1 Openbsd 2026-06-17 4.9 MEDIUM 5.5 MEDIUM
OpenBSD 5.8 and 5.9 allows certain local users to cause a denial of service (kernel panic) by unmounting a filesystem with an open vnode on the mnt_vnodelist.
CVE-2016-6246 1 Openbsd 1 Openbsd 2026-06-17 4.9 MEDIUM 4.4 MEDIUM
OpenBSD 5.8 and 5.9 allows certain local users with kern.usermount privileges to cause a denial of service (kernel panic) by mounting a tmpfs with a VNOVAL in the (1) username, (2) groupname, or (3) device name of the root node.
CVE-2016-6245 1 Openbsd 1 Openbsd 2026-06-17 4.9 MEDIUM 5.5 MEDIUM
OpenBSD 5.8 and 5.9 allows local users to cause a denial of service (kernel panic) via a large size in a getdents system call.
CVE-2016-6244 1 Openbsd 1 Openbsd 2026-06-17 7.8 HIGH 7.5 HIGH
The sys_thrsigdivert function in kern/kern_sig.c in the OpenBSD kernel 5.9 allows remote attackers to cause a denial of service (panic) via a negative "ts.tv_sec" value.
CVE-2016-6243 1 Openbsd 1 Openbsd 2026-06-17 4.9 MEDIUM 5.5 MEDIUM
thrsleep in kern/kern_synch.c in OpenBSD 5.8 and 5.9 allows local users to cause a denial of service (kernel panic) via a crafted value in the tsp parameter of the __thrsleep system call.
CVE-2016-6242 1 Openbsd 1 Openbsd 2026-06-17 4.9 MEDIUM 5.5 MEDIUM
OpenBSD 5.8 and 5.9 allows local users to cause a denial of service (assertion failure and kernel panic) via a large ident value in a kevent system call.