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Ubuntu: Security Advisory (USN-4635-1)

🗓️ 18 Nov 2020 00:00:00Reported by Copyright (C) 2020 Greenbone AGType 
openvas
 openvas🔗 plugins.openvas.org👁 8 Views

The 'krb5' package(s) on Ubuntu are missing an update due to a denial of service vulnerability in Kerberos

Related
Refs
Code
ReporterTitlePublishedViews
Family
ibm
IBM Security Bulletins		Security Bulletin: Vulnerability in MIT Kerberos 5 (CVE-2020-28196) affects HMC
22 Nov 202106:03
–ibm
ibm
IBM Security Bulletins		Security Bulletin: Cloud Pak for Security uses packages that are vulnerable to several CVEs
19 Oct 202115:38
–ibm
ibm
IBM Security Bulletins		Security Bulletin: Multiple security vulnerabilities found in open source code that is shipped with IBM Security Verify Access
6 Jul 202218:27
–ibm
ibm
IBM Security Bulletins		Security Bulletin: IBM QRadar SIEM Application Framework Base Image is vulnerable to using components with Known Vulnerabilities
3 Dec 202118:52
–ibm
freebsd
FreeBSD		MySQL -- Multiple vulnerabilities
20 Apr 202100:00
–freebsd
nessus
Tenable Nessus		Amazon Linux 2 : krb5 (ALAS-2022-1845)
10 Oct 202200:00
–nessus
nessus
Tenable Nessus		AlmaLinux 8 : krb5 (ALSA-2021:1593)
9 Feb 202200:00
–nessus
nessus
Tenable Nessus		CentOS 8 : krb5 (CESA-2021:1593)
19 May 202100:00
–nessus
nessus
Tenable Nessus		Debian DLA-2437-1 : krb5 security update
9 Nov 202000:00
–nessus
nessus
Tenable Nessus		Debian DSA-4795-1 : krb5 - security update
23 Nov 202000:00
–nessus
Rows per page
# SPDX-FileCopyrightText: 2020 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.844718");
  script_cve_id("CVE-2020-28196");
  script_tag(name:"creation_date", value:"2020-11-18 04:00:30 +0000 (Wed, 18 Nov 2020)");
  script_version("2024-02-02T05:06:07+0000");
  script_tag(name:"last_modification", value:"2024-02-02 05:06:07 +0000 (Fri, 02 Feb 2024)");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2020-11-16 15:16:49 +0000 (Mon, 16 Nov 2020)");

  script_name("Ubuntu: Security Advisory (USN-4635-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2020 Greenbone AG");
  script_family("Ubuntu Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/ubuntu_linux", "ssh/login/packages", re:"ssh/login/release=UBUNTU(14\.04\ LTS|16\.04\ LTS|18\.04\ LTS|20\.04\ LTS|20\.10)");

  script_xref(name:"Advisory-ID", value:"USN-4635-1");
  script_xref(name:"URL", value:"https://ubuntu.com/security/notices/USN-4635-1");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'krb5' package(s) announced via the USN-4635-1 advisory.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable package version is present on the target host.");

  script_tag(name:"insight", value:"Demi Obenour discovered that Kerberos incorrectly handled certain ASN.1.
An attacker could possibly use this issue to cause a denial of service.");

  script_tag(name:"affected", value:"'krb5' package(s) on Ubuntu 14.04, Ubuntu 16.04, Ubuntu 18.04, Ubuntu 20.04, Ubuntu 20.10.");

  script_tag(name:"solution", value:"Please install the updated package(s).");

  script_tag(name:"solution_type", value:"VendorFix");
  script_tag(name:"qod_type", value:"package");

  exit(0);
}

include("revisions-lib.inc");
include("pkg-lib-deb.inc");

release = dpkg_get_ssh_release();
if(!release)
  exit(0);

res = "";
report = "";

if(release == "UBUNTU14.04 LTS") {

  if(!isnull(res = isdpkgvuln(pkg:"krb5-admin-server", ver:"1.12+dfsg-2ubuntu5.4+esm2", rls:"UBUNTU14.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-kdc", ver:"1.12+dfsg-2ubuntu5.4+esm2", rls:"UBUNTU14.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-kdc-ldap", ver:"1.12+dfsg-2ubuntu5.4+esm2", rls:"UBUNTU14.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-locales", ver:"1.12+dfsg-2ubuntu5.4+esm2", rls:"UBUNTU14.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-multidev", ver:"1.12+dfsg-2ubuntu5.4+esm2", rls:"UBUNTU14.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-otp", ver:"1.12+dfsg-2ubuntu5.4+esm2", rls:"UBUNTU14.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-pkinit", ver:"1.12+dfsg-2ubuntu5.4+esm2", rls:"UBUNTU14.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-user", ver:"1.12+dfsg-2ubuntu5.4+esm2", rls:"UBUNTU14.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libgssapi-krb5-2", ver:"1.12+dfsg-2ubuntu5.4+esm2", rls:"UBUNTU14.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libgssrpc4", ver:"1.12+dfsg-2ubuntu5.4+esm2", rls:"UBUNTU14.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libk5crypto3", ver:"1.12+dfsg-2ubuntu5.4+esm2", rls:"UBUNTU14.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkadm5clnt-mit9", ver:"1.12+dfsg-2ubuntu5.4+esm2", rls:"UBUNTU14.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkadm5srv-mit8", ver:"1.12+dfsg-2ubuntu5.4+esm2", rls:"UBUNTU14.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkadm5srv-mit9", ver:"1.12+dfsg-2ubuntu5.4+esm2", rls:"UBUNTU14.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkdb5-7", ver:"1.12+dfsg-2ubuntu5.4+esm2", rls:"UBUNTU14.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkrad0", ver:"1.12+dfsg-2ubuntu5.4+esm2", rls:"UBUNTU14.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkrb5-3", ver:"1.12+dfsg-2ubuntu5.4+esm2", rls:"UBUNTU14.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkrb5support0", ver:"1.12+dfsg-2ubuntu5.4+esm2", rls:"UBUNTU14.04 LTS"))) {
    report += res;
  }

  if(report != "") {
    security_message(data:report);
  } else if(__pkg_match) {
    exit(99);
  }
  exit(0);
}

if(release == "UBUNTU16.04 LTS") {

  if(!isnull(res = isdpkgvuln(pkg:"krb5-admin-server", ver:"1.13.2+dfsg-5ubuntu2.2", rls:"UBUNTU16.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-k5tls", ver:"1.13.2+dfsg-5ubuntu2.2", rls:"UBUNTU16.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-kdc", ver:"1.13.2+dfsg-5ubuntu2.2", rls:"UBUNTU16.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-kdc-ldap", ver:"1.13.2+dfsg-5ubuntu2.2", rls:"UBUNTU16.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-locales", ver:"1.13.2+dfsg-5ubuntu2.2", rls:"UBUNTU16.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-multidev", ver:"1.13.2+dfsg-5ubuntu2.2", rls:"UBUNTU16.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-otp", ver:"1.13.2+dfsg-5ubuntu2.2", rls:"UBUNTU16.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-pkinit", ver:"1.13.2+dfsg-5ubuntu2.2", rls:"UBUNTU16.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-user", ver:"1.13.2+dfsg-5ubuntu2.2", rls:"UBUNTU16.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libgssapi-krb5-2", ver:"1.13.2+dfsg-5ubuntu2.2", rls:"UBUNTU16.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libgssrpc4", ver:"1.13.2+dfsg-5ubuntu2.2", rls:"UBUNTU16.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libk5crypto3", ver:"1.13.2+dfsg-5ubuntu2.2", rls:"UBUNTU16.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkadm5clnt-mit9", ver:"1.13.2+dfsg-5ubuntu2.2", rls:"UBUNTU16.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkadm5srv-mit9", ver:"1.13.2+dfsg-5ubuntu2.2", rls:"UBUNTU16.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkdb5-8", ver:"1.13.2+dfsg-5ubuntu2.2", rls:"UBUNTU16.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkrad0", ver:"1.13.2+dfsg-5ubuntu2.2", rls:"UBUNTU16.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkrb5-3", ver:"1.13.2+dfsg-5ubuntu2.2", rls:"UBUNTU16.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkrb5support0", ver:"1.13.2+dfsg-5ubuntu2.2", rls:"UBUNTU16.04 LTS"))) {
    report += res;
  }

  if(report != "") {
    security_message(data:report);
  } else if(__pkg_match) {
    exit(99);
  }
  exit(0);
}

if(release == "UBUNTU18.04 LTS") {

  if(!isnull(res = isdpkgvuln(pkg:"krb5-admin-server", ver:"1.16-2ubuntu0.2", rls:"UBUNTU18.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-k5tls", ver:"1.16-2ubuntu0.2", rls:"UBUNTU18.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-kdc", ver:"1.16-2ubuntu0.2", rls:"UBUNTU18.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-kdc-ldap", ver:"1.16-2ubuntu0.2", rls:"UBUNTU18.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-kpropd", ver:"1.16-2ubuntu0.2", rls:"UBUNTU18.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-locales", ver:"1.16-2ubuntu0.2", rls:"UBUNTU18.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-otp", ver:"1.16-2ubuntu0.2", rls:"UBUNTU18.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-pkinit", ver:"1.16-2ubuntu0.2", rls:"UBUNTU18.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-user", ver:"1.16-2ubuntu0.2", rls:"UBUNTU18.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libgssapi-krb5-2", ver:"1.16-2ubuntu0.2", rls:"UBUNTU18.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libgssrpc4", ver:"1.16-2ubuntu0.2", rls:"UBUNTU18.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libk5crypto3", ver:"1.16-2ubuntu0.2", rls:"UBUNTU18.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkadm5clnt-mit11", ver:"1.16-2ubuntu0.2", rls:"UBUNTU18.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkadm5srv-mit11", ver:"1.16-2ubuntu0.2", rls:"UBUNTU18.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkdb5-9", ver:"1.16-2ubuntu0.2", rls:"UBUNTU18.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkrad0", ver:"1.16-2ubuntu0.2", rls:"UBUNTU18.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkrb5-3", ver:"1.16-2ubuntu0.2", rls:"UBUNTU18.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkrb5support0", ver:"1.16-2ubuntu0.2", rls:"UBUNTU18.04 LTS"))) {
    report += res;
  }

  if(report != "") {
    security_message(data:report);
  } else if(__pkg_match) {
    exit(99);
  }
  exit(0);
}

if(release == "UBUNTU20.04 LTS") {

  if(!isnull(res = isdpkgvuln(pkg:"krb5-admin-server", ver:"1.17-6ubuntu4.1", rls:"UBUNTU20.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-k5tls", ver:"1.17-6ubuntu4.1", rls:"UBUNTU20.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-kdc", ver:"1.17-6ubuntu4.1", rls:"UBUNTU20.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-kdc-ldap", ver:"1.17-6ubuntu4.1", rls:"UBUNTU20.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-kpropd", ver:"1.17-6ubuntu4.1", rls:"UBUNTU20.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-locales", ver:"1.17-6ubuntu4.1", rls:"UBUNTU20.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-multidev", ver:"1.17-6ubuntu4.1", rls:"UBUNTU20.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-otp", ver:"1.17-6ubuntu4.1", rls:"UBUNTU20.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-pkinit", ver:"1.17-6ubuntu4.1", rls:"UBUNTU20.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-user", ver:"1.17-6ubuntu4.1", rls:"UBUNTU20.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libgssapi-krb5-2", ver:"1.17-6ubuntu4.1", rls:"UBUNTU20.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libgssrpc4", ver:"1.17-6ubuntu4.1", rls:"UBUNTU20.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libk5crypto3", ver:"1.17-6ubuntu4.1", rls:"UBUNTU20.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkadm5clnt-mit11", ver:"1.17-6ubuntu4.1", rls:"UBUNTU20.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkadm5srv-mit11", ver:"1.17-6ubuntu4.1", rls:"UBUNTU20.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkdb5-9", ver:"1.17-6ubuntu4.1", rls:"UBUNTU20.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkrad0", ver:"1.17-6ubuntu4.1", rls:"UBUNTU20.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkrb5-3", ver:"1.17-6ubuntu4.1", rls:"UBUNTU20.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkrb5support0", ver:"1.17-6ubuntu4.1", rls:"UBUNTU20.04 LTS"))) {
    report += res;
  }

  if(report != "") {
    security_message(data:report);
  } else if(__pkg_match) {
    exit(99);
  }
  exit(0);
}

if(release == "UBUNTU20.10") {

  if(!isnull(res = isdpkgvuln(pkg:"krb5-admin-server", ver:"1.17-10ubuntu0.1", rls:"UBUNTU20.10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-k5tls", ver:"1.17-10ubuntu0.1", rls:"UBUNTU20.10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-kdc", ver:"1.17-10ubuntu0.1", rls:"UBUNTU20.10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-kdc-ldap", ver:"1.17-10ubuntu0.1", rls:"UBUNTU20.10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-kpropd", ver:"1.17-10ubuntu0.1", rls:"UBUNTU20.10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-locales", ver:"1.17-10ubuntu0.1", rls:"UBUNTU20.10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-multidev", ver:"1.17-10ubuntu0.1", rls:"UBUNTU20.10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-otp", ver:"1.17-10ubuntu0.1", rls:"UBUNTU20.10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-pkinit", ver:"1.17-10ubuntu0.1", rls:"UBUNTU20.10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-user", ver:"1.17-10ubuntu0.1", rls:"UBUNTU20.10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libgssapi-krb5-2", ver:"1.17-10ubuntu0.1", rls:"UBUNTU20.10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libgssrpc4", ver:"1.17-10ubuntu0.1", rls:"UBUNTU20.10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libk5crypto3", ver:"1.17-10ubuntu0.1", rls:"UBUNTU20.10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkadm5clnt-mit11", ver:"1.17-10ubuntu0.1", rls:"UBUNTU20.10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkadm5srv-mit11", ver:"1.17-10ubuntu0.1", rls:"UBUNTU20.10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkdb5-9", ver:"1.17-10ubuntu0.1", rls:"UBUNTU20.10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkrad0", ver:"1.17-10ubuntu0.1", rls:"UBUNTU20.10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkrb5-3", ver:"1.17-10ubuntu0.1", rls:"UBUNTU20.10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkrb5support0", ver:"1.17-10ubuntu0.1", rls:"UBUNTU20.10"))) {
    report += res;
  }

  if(report != "") {
    security_message(data:report);
  } else if(__pkg_match) {
    exit(99);
  }
  exit(0);
}

exit(0);

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7.8High risk
Vulners AI Score7.8
CVSS 25
CVSS 3.17.5
EPSS0.04417
SSVC
ubuntusecurity advisorykrb5denial of servicevulnerability
8