{"id":"CVE-2015-5352","aliases":["DEBIAN-CVE-2015-5352","DLA-1500-1","DLA-288-1","EUVD-2015-5308","GHSA-6fpx-j7j8-53rc","MGASA-2015-0271","RHSA-2016:0741","SUSE-SU-2015:1544-1","SUSE-SU-2015:1581-1","SUSE-SU-2015:1695-1","SUSE-SU-2015:1840-1","UBUNTU-CVE-2015-5352","USN-2710-1"],"status":"published","title":"The x11_open_helper function in channels.c in ssh in OpenSSH before 6.9, when ForwardX11Trusted...","description":"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 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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.","status":"published","published":"2015-08-03T00:00:00Z","modified":"2024-08-06T06:41:09.541Z","updated_at":"2026-11-02T14:35:39.846011Z"}],"euvd":[{"id":"EUVD-2015-5308","description":"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.","status":"published","published":"2015-08-03T00:00:00Z","modified":"2024-08-06T06:41:09Z","updated_at":"2026-11-03T02:22:00.863884Z"}],"ghsa":[{"id":"GHSA-6fpx-j7j8-53rc","title":"The x11_open_helper function in channels.c in ssh in OpenSSH before 6.9, when ForwardX11Trusted...","description":"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.","status":"published","published":"2022-05-14T02:19:19Z","modified":"2025-04-12T12:50:26Z","updated_at":"2026-11-02T15:01:22.814855Z"}],"nvd":[{"id":"CVE-2015-5352","description":"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.","status":"published","published":"2015-08-03T01:59:01.137Z","modified":"2026-06-17T00:28:59.547Z","cvss":[{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-264"],"updated_at":"2026-11-02T14:03:07.96297Z"}],"osv":[{"id":"CVE-2015-5352","description":"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.","status":"published","published":"2015-08-03T01:59:01Z","modified":"2026-04-16T06:22:14.473296427Z","updated_at":"2026-11-02T15:44:00.594921Z"},{"id":"DEBIAN-CVE-2015-5352","description":"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.","status":"published","published":"2015-08-03T01:59:01.137Z","modified":"2026-09-09T06:47:30.037855083Z","updated_at":"2026-11-02T15:45:26.752992Z"},{"id":"DLA-1500-1","title":"openssh - security update","status":"published","published":"2018-09-10T00:00:00Z","modified":"2026-03-09T01:01:44.380043Z","updated_at":"2026-11-02T15:46:09.777694Z"},{"id":"DLA-288-1","title":"openssh - security update","status":"published","published":"2015-08-07T00:00:00Z","modified":"2026-03-09T01:20:48.896108Z","updated_at":"2026-11-02T15:46:11.189256Z"},{"id":"MGASA-2015-0271","title":"Updated openssh package fixes security vulnerability","description":"In Portable OpenSSH before 6.9p1, when forwarding X11 connections with\nForwardX11Trusted=no, connections made after ForwardX11Timeout expired\ncould be permitted and no longer subject to XSECURITY restrictions because\nof an  ineffective timeout check in ssh (CVE-2015-5352).\n","status":"published","published":"2015-07-09T08:09:20Z","modified":"2026-04-16T06:23:39.96681312Z","updated_at":"2026-11-02T15:49:39.792687Z"},{"id":"RHSA-2016:0741","title":"Red Hat Security Advisory: openssh security, bug fix, and enhancement update","status":"published","published":"2024-09-15T22:56:32Z","modified":"2026-06-26T12:21:51.562476815Z","updated_at":"2026-11-02T15:53:03.734507Z"},{"id":"SUSE-SU-2015:1544-1","title":"Security update for openssh","description":"\nopenssh was updated to fix several security issues.\n\nThese security issues were fixed:\n* CVE-2015-5352: The x11_open_helper function in channels.c in ssh\n  in OpenSSH when ForwardX11Trusted mode is not used, lacked a check of\n  the refusal deadline for X connections, which made it easier for remote\n  attackers to bypass intended access restrictions via a connection outside\n  of the permitted time window (bsc#936695).\n* CVE-2015-5600: The kbdint_next_device function in auth2-chall.c\n  in sshd in OpenSSH did not properly restrict the processing of\n  keyboard-interactive devices within a single connection, which made it\n  easier for remote attackers to conduct brute-force attacks or cause a\n  denial of service (CPU consumption) via a long and duplicative list in\n  the ssh -oKbdInteractiveDevices option, as demonstrated by a modified\n  client that provides a different password for each pam element on this\n  list (bsc#938746).\n* CVE-2015-4000: Removed and disabled weak DH groups to address LOGJAM (bsc#932483).\n* Hardening patch to fix sftp RCE (bsc#903649).\n* CVE-2015-6563: The monitor component in sshd in OpenSSH accepted\n  extraneous username data in MONITOR_REQ_PAM_INIT_CTX requests, which\n  allowed local users to conduct impersonation attacks by leveraging any SSH\n  login access in conjunction with control of the sshd uid to send a crafted\n  MONITOR_REQ_PWNAM request, related to monitor.c and monitor_wrap.c. (bsc#943010)\n* CVE-2015-6564: Use-after-free vulnerability in the\n  mm_answer_pam_free_ctx function in monitor.c in sshd in OpenSSH might\n  have allowed local users to gain privileges by leveraging control of the\n  sshd uid to send an unexpectedly early MONITOR_REQ_PAM_FREE_CTX request. (bsc#943006)\n\nAlso use %restart_on_update in the trigger script.\n","status":"published","published":"2015-09-09T08:52:05Z","modified":"2025-05-02T04:04:34.875141Z","updated_at":"2026-11-02T15:53:43.030986Z"},{"id":"SUSE-SU-2015:1581-1","title":"Security update for openssh","description":"openssh was updated to fix several security issues and bugs.\n\nThese security issues were fixed:\n* CVE-2015-5352: The x11_open_helper function in channels.c in ssh\n  in OpenSSH when ForwardX11Trusted mode is not used, lacked a check of\n  the refusal deadline for X connections, which made it easier for remote\n  attackers to bypass intended access restrictions via a connection outside\n  of the permitted time window (bsc#936695).\n* CVE-2015-5600: The kbdint_next_device function in auth2-chall.c\n  in sshd in OpenSSH did not properly restrict the processing of\n  keyboard-interactive devices within a single connection, which made it\n  easier for remote attackers to conduct brute-force attacks or cause a\n  denial of service (CPU consumption) via a long and duplicative list in\n  the ssh -oKbdInteractiveDevices option, as demonstrated by a modified\n  client that provides a different password for each pam element on this\n  list (bsc#938746).\n* CVE-2015-4000: Removed and disabled weak DH groups to address LOGJAM (bsc#932483).\n* Hardening patch to fix sftp RCE (bsc#903649).\n* CVE-2015-6563: The monitor component in sshd in OpenSSH accepted\n  extraneous username data in MONITOR_REQ_PAM_INIT_CTX requests, which\n  allowed local users to conduct impersonation attacks by leveraging any SSH\n  login access in conjunction with control of the sshd uid to send a crafted\n  MONITOR_REQ_PWNAM request, related to monitor.c and monitor_wrap.c.\n* CVE-2015-6564: Use-after-free vulnerability in the\n  mm_answer_pam_free_ctx function in monitor.c in sshd in OpenSSH might\n  have allowed local users to gain privileges by leveraging control of the\n  sshd uid to send an unexpectedly early MONITOR_REQ_PAM_FREE_CTX request.\n\nThese non-security issues were fixed:\n- bsc#914309: sshd inherits oom_adj -17 on SIGHUP causing DoS potential for oom_killer.\n- bsc#673532: limits.conf fsize change in SLES10SP3 causing problems to WebSphere mqm user.\n- bsc#916549: Fixed support for aesXXX-gcm@openssh.com.\n  ","status":"published","published":"2015-09-17T12:53:08Z","modified":"2026-02-04T03:45:50.913727Z","updated_at":"2026-11-02T15:53:43.030986Z"},{"id":"SUSE-SU-2015:1695-1","title":"Security update for openssh","description":"OpenSSH was updated to fix several security issues and bugs.\n\nPlease note that due to a bug in the previous shipped openssh version, sshd might\nnot correctly restart. Please verify that the ssh daemon is running after installing\nthis update.\n\nThese security issues were fixed:\n\n* CVE-2015-5352: The x11_open_helper function, when ForwardX11Trusted mode\n  is not used, lacked a check of the refusal deadline for X connections,\n  which made it easier for remote attackers to bypass intended access\n  restrictions via a connection outside of the permitted time window.\n  (bsc#936695)\n\n* CVE-2015-5600: The kbdint_next_device function in auth2-chall.c\n  in sshd did not properly restrict the processing of keyboard-interactive\n  devices within a single connection, which made it easier for remote\n  attackers to conduct brute-force attacks or cause a denial of service\n  (CPU consumption) via a long and duplicative list in the ssh\n  -oKbdInteractiveDevices option, as demonstrated by a modified client\n  that provides a different password for each pam element on this list.\n  (bsc#938746)\n\n* CVE-2015-4000: Removed and disabled weak DH groups to address LOGJAM.\n  (bsc#932483)\n\n* Hardening patch to fix sftp RCE. (bsc#903649)\n\n* CVE-2015-6563: The monitor component in sshd accepted extraneous username\n  data in MONITOR_REQ_PAM_INIT_CTX requests, which allowed local users to\n  conduct impersonation attacks by leveraging any SSH login access in\n  conjunction with control of the sshd uid to send a crafted MONITOR_REQ_PWNAM\n  request, related to monitor.c and monitor_wrap.c.\n\n* CVE-2015-6564: Use-after-free vulnerability in the mm_answer_pam_free_ctx\n  function in monitor.c in sshd might have allowed local users to gain\n  privileges by leveraging control of the sshd uid to send an unexpectedly\n  early MONITOR_REQ_PAM_FREE_CTX request.\n\nAdditional a bug was fixed that could lead to openssh not working in \nchroot (bsc#947458).\n","status":"published","published":"2015-10-05T16:22:28Z","modified":"2026-02-04T02:38:00.436502Z","updated_at":"2026-11-02T15:53:43.030986Z"},{"id":"SUSE-SU-2015:1840-1","title":"Security update for openssh","description":"openssh was updated to fix four security issues.\n\nThese security issues were fixed:\n- CVE-2015-5352: The x11_open_helper function in channels.c in ssh in OpenSSH when ForwardX11Trusted mode is not used, lacked a check of the refusal deadline for X connections, which made it easier for remote attackers to bypass intended access restrictions via a connection outside of the permitted time window (bsc#936695).\n- CVE-2015-5600: The kbdint_next_device function in auth2-chall.c in sshd in OpenSSH did not properly restrict the processing of keyboard-interactive devices within a single connection, which made 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 (bsc#938746).\n- CVE-2015-4000: Removed and disabled weak DH groups (bsc#932483).\n- Hardening patch to fix sftp RCE (bsc#903649).\n\nThese non-security issues were fixed:\n- bsc#914309: sshd inherits oom_adj -17 on SIGHUP causing DoS potential for oom_killer.\n- bsc#673532: limits.conf fsize change in SLES10SP3 causing problems to WebSphere mqm user.\n  ","status":"published","published":"2015-10-19T16:07:14Z","modified":"2026-02-04T04:07:01.830276Z","updated_at":"2026-11-02T15:53:43.030986Z"},{"id":"UBUNTU-CVE-2015-5352","description":"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.","status":"published","published":"2015-08-02T00:00:00Z","modified":"2026-02-04T04:37:51.276045Z","updated_at":"2026-11-02T15:54:10.385269Z"},{"id":"USN-2710-1","title":"openssh vulnerabilities","description":"Moritz Jodeit discovered that OpenSSH incorrectly handled usernames when\nusing PAM authentication. If an additional vulnerability were discovered in\nthe OpenSSH unprivileged child process, this issue could allow a remote\nattacker to perform user impersonation. (CVE number pending)\n\nMoritz Jodeit discovered that OpenSSH incorrectly handled context memory\nwhen using PAM authentication. If an additional vulnerability were\ndiscovered in the OpenSSH unprivileged child process, this issue could\nallow a remote attacker to bypass authentication or possibly execute\narbitrary code. (CVE number pending)\n\nJann Horn discovered that OpenSSH incorrectly handled time windows for\nX connections. A remote attacker could use this issue to bypass certain\naccess restrictions. (CVE-2015-5352)\n\nIt was discovered that OpenSSH incorrectly handled keyboard-interactive\nauthentication. In a non-default configuration, a remote attacker could\npossibly use this issue to perform a brute-force password attack.\n(CVE-2015-5600)\n","status":"published","published":"2015-08-14T15:26:09Z","modified":"2026-05-29T18:00:19.347158916Z","updated_at":"2026-11-02T16:58:09.227524Z"}]}}