ghsa-6x25-gfx2-5crp
Vulnerability from github
Published
2022-05-13 01:05
Modified
2025-04-12 12:50
Details

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.

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{
   affected: [],
   aliases: [
      "CVE-2015-5600",
   ],
   database_specific: {
      cwe_ids: [],
      github_reviewed: false,
      github_reviewed_at: null,
      nvd_published_at: "2015-08-03T01:59:00Z",
      severity: "HIGH",
   },
   details: "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.",
   id: "GHSA-6x25-gfx2-5crp",
   modified: "2025-04-12T12:50:26Z",
   published: "2022-05-13T01:05:10Z",
   references: [
      {
         type: "ADVISORY",
         url: "https://nvd.nist.gov/vuln/detail/CVE-2015-5600",
      },
      {
         type: "WEB",
         url: "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf",
      },
      {
         type: "WEB",
         url: "https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04952480",
      },
      {
         type: "WEB",
         url: "https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05128992",
      },
      {
         type: "WEB",
         url: "https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05157667",
      },
      {
         type: "WEB",
         url: "https://kc.mcafee.com/corporate/index?page=content&id=SB10136",
      },
      {
         type: "WEB",
         url: "https://kc.mcafee.com/corporate/index?page=content&id=SB10157",
      },
      {
         type: "WEB",
         url: "https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html",
      },
      {
         type: "WEB",
         url: "https://security.gentoo.org/glsa/201512-04",
      },
      {
         type: "WEB",
         url: "https://security.netapp.com/advisory/ntap-20151106-0001",
      },
      {
         type: "WEB",
         url: "https://support.apple.com/kb/HT205031",
      },
      {
         type: "WEB",
         url: "https://www.arista.com/en/support/advisories-notices/security-advisories/1174-security-advisory-12",
      },
      {
         type: "WEB",
         url: "http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/auth2-chall.c",
      },
      {
         type: "WEB",
         url: "http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/auth2-chall.c.diff?r1=1.42&r2=1.43&f=h",
      },
      {
         type: "WEB",
         url: "http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10697",
      },
      {
         type: "WEB",
         url: "http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html",
      },
      {
         type: "WEB",
         url: "http://lists.fedoraproject.org/pipermail/package-announce/2015-August/165170.html",
      },
      {
         type: "WEB",
         url: "http://lists.fedoraproject.org/pipermail/package-announce/2015-July/162955.html",
      },
      {
         type: "WEB",
         url: "http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00017.html",
      },
      {
         type: "WEB",
         url: "http://openwall.com/lists/oss-security/2015/07/23/4",
      },
      {
         type: "WEB",
         url: "http://rhn.redhat.com/errata/RHSA-2016-0466.html",
      },
      {
         type: "WEB",
         url: "http://seclists.org/fulldisclosure/2015/Jul/92",
      },
      {
         type: "WEB",
         url: "http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html",
      },
      {
         type: "WEB",
         url: "http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html",
      },
      {
         type: "WEB",
         url: "http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html",
      },
      {
         type: "WEB",
         url: "http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html",
      },
      {
         type: "WEB",
         url: "http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html",
      },
      {
         type: "WEB",
         url: "http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html",
      },
      {
         type: "WEB",
         url: "http://www.securityfocus.com/bid/75990",
      },
      {
         type: "WEB",
         url: "http://www.securityfocus.com/bid/91787",
      },
      {
         type: "WEB",
         url: "http://www.securityfocus.com/bid/92012",
      },
      {
         type: "WEB",
         url: "http://www.securitytracker.com/id/1032988",
      },
      {
         type: "WEB",
         url: "http://www.ubuntu.com/usn/USN-2710-1",
      },
      {
         type: "WEB",
         url: "http://www.ubuntu.com/usn/USN-2710-2",
      },
   ],
   schema_version: "1.4.0",
   severity: [],
}


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