National Vulnerability Database

National Vulnerability Database

National Vulnerability
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Search Parameters:
  • Contains Software Flaws (CVE)
  • CPE Product Version: cpe:/a:openbsd:openssh:5.4:p1
There are 27 matching records.
Displaying matches 1 through 20.
Vuln ID Summary CVSS Severity
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; 01:29:00 PM -05:00
V3: 5.9 MEDIUM
V2: 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; 01:29:00 PM -05:00
V3: 6.8 MEDIUM
V2: 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; 01:29:00 PM -05:00
V3: 6.8 MEDIUM
V2: 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; 04:29:00 PM -05:00
V3: 5.3 MEDIUM
V2: 2.6 LOW
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; 03:29:00 PM -04:00
V3: 5.3 MEDIUM
V2: 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; 05:29:00 PM -05:00
V3: 7.5 HIGH
V2: 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 -04:00
V3: 5.3 MEDIUM
V2: 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; 09:59:03 PM -05:00
V3: 7.8 HIGH
V2: 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; 09:59:03 PM -05:00
V3: 5.5 MEDIUM
V2: 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; 09:59:03 PM -05:00
V3: 7.0 HIGH
V2: 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; 09:59:03 PM -05:00
V3: 7.3 HIGH
V2: 7.5 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; 06:59:02 AM -04:00
V3: 6.4 MEDIUM
V2: 5.5 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; 05:59:02 PM -05:00
V3: 8.1 HIGH
V2: 4.6 MEDIUM
CVE-2016-0777

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.

Published: January 14, 2016; 05:59:01 PM -05:00
V3: 6.5 MEDIUM
V2: 4.0 MEDIUM
CVE-2015-6564

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.

Published: August 23, 2015; 09:59:01 PM -04:00
V2: 6.9 MEDIUM
CVE-2015-6563

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.

Published: August 23, 2015; 09:59:00 PM -04:00
V2: 1.9 LOW
CVE-2015-5600

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.

Published: August 02, 2015; 09:59:03 PM -04:00
V2: 8.5 HIGH
CVE-2015-5352

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.

Published: August 02, 2015; 09:59:01 PM -04:00
V2: 4.3 MEDIUM
CVE-2014-2653

The verify_host_key function in sshconnect.c in the client in OpenSSH 6.6 and earlier allows remote servers to trigger the skipping of SSHFP DNS RR checking by presenting an unacceptable HostCertificate.

Published: March 27, 2014; 06:55:04 AM -04:00
V2: 5.8 MEDIUM
CVE-2014-2532

sshd in OpenSSH before 6.6 does not properly support wildcards on AcceptEnv lines in sshd_config, which allows remote attackers to bypass intended environment restrictions by using a substring located before a wildcard character.

Published: March 18, 2014; 01:18:19 AM -04:00
V3: 4.9 MEDIUM
V2: 5.8 MEDIUM