Debian OpenSSH vulnerabilities

CVE-2016-0777 [MEDIUM] CVE-2016-0777: openssh - The resend_bytes function in roaming_common.c in the client in OpenSSH 5.x, 6.x,... 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. Scope: local bookworm: resolved (fixed in 1:7.1p2-1) bullseye: resolved (fixed in 1:7.1p2-1) forky: re

CVE-2016-1907 [MEDIUM] CVE-2016-1907: openssh - The ssh_packet_read_poll2 function in packet.c in OpenSSH before 7.1p2 allows re... 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. Scope: local bookworm: resolved (fixed in 1:7.1p2-1) bullseye: resolved (fixed in 1:7.1p2-1) forky: resolved (fixed in 1:7.1p2-1) sid: resolved (fixed in 1:7.1p2-1) trixie:

CVE-2016-6210 [MEDIUM] CVE-2016-6210: openssh - sshd in OpenSSH before 7.3, when SHA256 or SHA512 are used for user password has... sshd in OpenSSH before 7.3, when SHA256 or SHA512 are used for user password hashing, uses BLOWFISH hashing on a static password when the username does not exist, which allows remote attackers to enumerate users by leveraging the timing difference between responses when a large password is provided. Scope: local bookworm: resolved (fixed in 1:7.2p2-6) bullseye: reso

CVE-2016-3115 [MEDIUM] CVE-2016-3115: openssh - Multiple CRLF injection vulnerabilities in session.c in sshd in OpenSSH before 7... 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. Scope: local bookworm: resolved (fixed in 1:7.2p2-1) bullseye: resolved (fixed in 1:7.2p2-1) forky:

CVE-2016-20012 [MEDIUM] CVE-2016-20012: openssh - OpenSSH through 8.7 allows remote attackers, who have a suspicion that a certain... 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 f

CVE-2016-10011 [MEDIUM] CVE-2016-10011: openssh - authfile.c in sshd in OpenSSH before 7.4 does not properly consider the effects ... 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. Scope: local bookworm: resolved (fixed in 1:7.4p1-1) bullseye: resolved (fixed in 1:7.4p1-1) forky: resolved (fixed in 1

CVE-2016-10010 [HIGH] CVE-2016-10010: openssh - sshd in OpenSSH before 7.4, when privilege separation is not used, creates forwa... 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. Scope: local bookworm: resolved (fixed in 1:7.4p1-1) bullseye: resolved (fixed in 1:7.4p1-1) forky: resolved (fixed in 1:7.4p1-1) sid: resolved (fixed in 1

CVE-2016-10012 [HIGH] CVE-2016-10012: openssh - The shared memory manager (associated with pre-authentication compression) in ss... 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. Scope: local bookworm: resolve

CVE-2016-10009 [HIGH] CVE-2016-10009: openssh - Untrusted search path vulnerability in ssh-agent.c in ssh-agent in OpenSSH befor... 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. Scope: local bookworm: resolved (fixed in 1:7.4p1-1) bullseye: resolved (fixed in 1:7.4p1-1) forky: resolved (fixed in 1:7.4p1-1) sid: resolved (fixed in 1:7.4p1-

CVE-2015-5600 [HIGH] CVE-2015-5600: openssh - The kbdint_next_device function in auth2-chall.c in sshd in OpenSSH through 6.9 ... 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

CVE-2015-8325 [HIGH] CVE-2015-8325: openssh - The do_setup_env function in session.c in sshd in OpenSSH through 7.2p2, when th... 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. Scope: local bookworm: r

CVE-2015-6564 [MEDIUM] CVE-2015-6564: openssh - Use-after-free vulnerability in the mm_answer_pam_free_ctx function in monitor.c... 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. Scope: local bookworm: resolved (fixed in 1:6.9p1-1) bullseye: resolved (fixed in 1:6.9

CVE-2015-5352 [MEDIUM] CVE-2015-5352: openssh - The x11_open_helper function in channels.c in ssh in OpenSSH before 6.9, when Fo... 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. Scope: local bookworm: resolved (fixed in 1:6.9p1-1) bullsey

CVE-2015-6563 [LOW] CVE-2015-6563: openssh - The monitor component in sshd in OpenSSH before 7.0 on non-OpenBSD platforms acc... 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-2015-6565 [HIGH] CVE-2015-6565: openssh - sshd in OpenSSH 6.8 and 6.9 uses world-writable permissions for TTY devices, whi... 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. Scope: local bookworm: resolved bullseye: resolved forky: resolved sid: resolved trixie: resolved

CVE-2014-2532 [MEDIUM] CVE-2014-2532: openssh - sshd in OpenSSH before 6.6 does not properly support wildcards on AcceptEnv line... 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. Scope: local bookworm: resolved (fixed in 1:6.6p1-1) bullseye: resolved (fixed in 1:6.6p1-1) forky: resolved (fixed in 1:6.6p1-1) sid: res

CVE-2014-2653 [MEDIUM] CVE-2014-2653: openssh - The verify_host_key function in sshconnect.c in the client in OpenSSH 6.6 and ea... 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. Scope: local bookworm: resolved (fixed in 1:6.6p1-1) bullseye: resolved (fixed in 1:6.6p1-1) forky: resolved (fixed in 1:6.6p1-1) sid: resolved (fixed in 1:6.6p1-1)

CVE-2014-9278 [MEDIUM] CVE-2014-9278: openssh - The OpenSSH server, as used in Fedora and Red Hat Enterprise Linux 7 and when ru... The OpenSSH server, as used in Fedora and Red Hat Enterprise Linux 7 and when running in a Kerberos environment, allows remote authenticated users to log in as another user when they are listed in the .k5users file of that user, which might bypass intended authentication requirements that would force a local login. Scope: local bookworm: resolved bullseye: resolved

CVE-2014-1692 [HIGH] CVE-2014-1692: openssh - The hash_buffer function in schnorr.c in OpenSSH through 6.4, when Makefile.inc ... The hash_buffer function in schnorr.c in OpenSSH through 6.4, when Makefile.inc is modified to enable the J-PAKE protocol, does not initialize certain data structures, which might allow remote attackers to cause a denial of service (memory corruption) or have unspecified other impact via vectors that trigger an error condition. Scope: local bookworm: resolved bullseye

CVE-2014-8475 [MEDIUM] CVE-2014-8475: openssh - FreeBSD 9.1, 9.2, and 10.0, when compiling OpenSSH with Kerberos support, uses i... FreeBSD 9.1, 9.2, and 10.0, when compiling OpenSSH with Kerberos support, uses incorrect library ordering when linking sshd, which causes symbols to be resolved incorrectly and allows remote attackers to cause a denial of service (sshd deadlock and prevention of new connections) by ending multiple connections before authentication is completed. Scope: local bookworm