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  • Keyword (text search): cpe:2.3:a:openbsd:openssh:7.1:p1:*:*:*:*:*:*
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There are 23 matching records.
Displaying matches 1 through 20.
Vuln ID Summary CVSS Severity
CVE-2021-41617

sshd in OpenSSH 6.2 through 8.x before 8.8, when certain non-default configurations are used, allows privilege escalation because supplemental groups are not initialized as expected. Helper programs for AuthorizedKeysCommand and AuthorizedPrincipalsCommand may run with privileges associated with group memberships of the sshd process, if the configuration specifies running the command as a different user.

Published: September 26, 2021; 3:15:07 PM -0400
V3.1: 7.0 HIGH
V2.0: 4.4 MEDIUM
CVE-2016-20012

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.

Published: September 15, 2021; 4:15:07 PM -0400
V3.1: 5.3 MEDIUM
V2.0: 4.3 MEDIUM
CVE-2020-15778

** DISPUTED ** scp in OpenSSH through 8.3p1 allows command injection in the scp.c toremote function, as demonstrated by backtick characters in the destination argument. NOTE: the vendor reportedly has stated that they intentionally omit validation of "anomalous argument transfers" because that could "stand a great chance of breaking existing workflows."

Published: July 24, 2020; 10:15:12 AM -0400
V3.1: 7.8 HIGH
V2.0: 6.8 MEDIUM
CVE-2020-14145

The client side in OpenSSH 5.7 through 8.4 has an Observable Discrepancy leading to an information leak in the algorithm negotiation. This allows man-in-the-middle attackers to target initial connection attempts (where no host key for the server has been cached by the client). NOTE: some reports state that 8.5 and 8.6 are also affected.

Published: June 29, 2020; 2:15:11 PM -0400
V3.1: 5.9 MEDIUM
V2.0: 4.3 MEDIUM
CVE-2019-6111

An issue was discovered in OpenSSH 7.9. Due to the scp implementation being derived from 1983 rcp, the server chooses which files/directories are sent to the client. However, the scp client only performs cursory validation of the object name returned (only directory traversal attacks are prevented). A malicious scp server (or Man-in-The-Middle attacker) can overwrite arbitrary files in the scp client target directory. If recursive operation (-r) is performed, the server can manipulate subdirectories as well (for example, to overwrite the .ssh/authorized_keys file).

Published: January 31, 2019; 1:29:00 PM -0500
V3.0: 5.9 MEDIUM
V2.0: 5.8 MEDIUM
CVE-2019-6110

In OpenSSH 7.9, due to accepting and displaying arbitrary stderr output from the server, a malicious server (or Man-in-The-Middle attacker) can manipulate the client output, for example to use ANSI control codes to hide additional files being transferred.

Published: January 31, 2019; 1:29:00 PM -0500
V3.0: 6.8 MEDIUM
V2.0: 4.0 MEDIUM
CVE-2019-6109

An issue was discovered in OpenSSH 7.9. Due to missing character encoding in the progress display, a malicious server (or Man-in-The-Middle attacker) can employ crafted object names to manipulate the client output, e.g., by using ANSI control codes to hide additional files being transferred. This affects refresh_progress_meter() in progressmeter.c.

Published: January 31, 2019; 1:29:00 PM -0500
V3.0: 6.8 MEDIUM
V2.0: 4.0 MEDIUM
CVE-2018-20685

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.

Published: January 10, 2019; 4:29:00 PM -0500
V3.0: 5.3 MEDIUM
V2.0: 2.6 LOW
CVE-2018-15919

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.'

Published: August 28, 2018; 4:29:00 AM -0400
V3.0: 5.3 MEDIUM
V2.0: 5.0 MEDIUM
CVE-2018-15473

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.

Published: August 17, 2018; 3:29:00 PM -0400
V3.0: 5.3 MEDIUM
V2.0: 5.0 MEDIUM
CVE-2016-10708

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.

Published: January 21, 2018; 5:29:00 PM -0500
V3.0: 7.5 HIGH
V2.0: 5.0 MEDIUM
CVE-2017-15906

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.

Published: October 25, 2017; 11:29:00 PM -0400
V3.0: 5.3 MEDIUM
V2.0: 5.0 MEDIUM
CVE-2016-10012

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.

Published: January 04, 2017; 9:59:03 PM -0500
V3.0: 7.8 HIGH
V2.0: 7.2 HIGH
CVE-2016-10011

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.

Published: January 04, 2017; 9:59:03 PM -0500
V3.0: 5.5 MEDIUM
V2.0: 2.1 LOW
CVE-2016-10010

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.

Published: January 04, 2017; 9:59:03 PM -0500
V3.0: 7.0 HIGH
V2.0: 6.9 MEDIUM
CVE-2016-10009

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.

Published: January 04, 2017; 9:59:03 PM -0500
V3.0: 7.3 HIGH
V2.0: 7.5 HIGH
CVE-2016-8858

** DISPUTED ** 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."

Published: December 09, 2016; 6:59:00 AM -0500
V3.0: 7.5 HIGH
V2.0: 7.8 HIGH
CVE-2016-3115

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.

Published: March 22, 2016; 6:59:02 AM -0400
V3.0: 6.4 MEDIUM
V2.0: 5.5 MEDIUM
CVE-2016-1907

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.

Published: January 19, 2016; 12:59:10 AM -0500
V3.0: 5.3 MEDIUM
V2.0: 5.0 MEDIUM
CVE-2016-0778

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.

Published: January 14, 2016; 5:59:02 PM -0500
V3.0: 8.1 HIGH
V2.0: 4.6 MEDIUM