Debian: Security Advisory (DLA-1265-1)

# SPDX-FileCopyrightText: 2018 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("1.3.6.1.4.1.25623.1.0.891265");
  script_cve_id("CVE-2013-1418", "CVE-2014-5351", "CVE-2014-5353", "CVE-2014-5355", "CVE-2016-3119", "CVE-2016-3120");
  script_tag(name:"creation_date", value:"2018-02-20 23:00:00 +0000 (Tue, 20 Feb 2018)");
  script_version("2024-02-02T05:06:06+0000");
  script_tag(name:"last_modification", value:"2024-02-02 05:06:06 +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:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2016-08-01 17:45:23 +0000 (Mon, 01 Aug 2016)");

  script_name("Debian: Security Advisory (DLA-1265-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2018 Greenbone AG");
  script_family("Debian Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/debian_linux", "ssh/login/packages", re:"ssh/login/release=DEB7");

  script_xref(name:"Advisory-ID", value:"DLA-1265-1");
  script_xref(name:"URL", value:"https://www.debian.org/lts/security/2018/DLA-1265-1");
  script_xref(name:"URL", value:"https://wiki.debian.org/LTS");

  script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'krb5' package(s) announced via the DLA-1265-1 advisory.");

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

  script_tag(name:"insight", value:"Kerberos, a system for authenticating users and services on a network, was affected by several vulnerabilities. The Common Vulnerabilities and Exposures project identifies the following issues.

CVE-2013-1418

Kerberos allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted request when multiple realms are configured.

CVE-2014-5351

Kerberos sends old keys in a response to a -randkey -keepold request, which allows remote authenticated users to forge tickets by leveraging administrative access.

CVE-2014-5353

When the KDC uses LDAP, allows remote authenticated users to cause a denial of service (daemon crash) via a successful LDAP query with no results, as demonstrated by using an incorrect object type for a password policy.

CVE-2014-5355

Kerberos expects that a krb5_read_message data field is represented as a string ending with a '0' character, which allows remote attackers to (1) cause a denial of service (NULL pointer dereference) via a zero-byte version string or (2) cause a denial of service (out-of-bounds read) by omitting the '0' character,

CVE-2016-3119

Kerberos allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted request to modify a principal.

CVE-2016-3120

Kerberos allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) via an S4U2Self request.

For Debian 7 Wheezy, these problems have been fixed in version 1.10.1+dfsg-5+deb7u9.

We recommend that you upgrade your krb5 packages.

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: [link moved to references]");

  script_tag(name:"affected", value:"'krb5' package(s) on Debian 7.");

  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 == "DEB7") {

  if(!isnull(res = isdpkgvuln(pkg:"krb5-admin-server", ver:"1.10.1+dfsg-5+deb7u9", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-doc", ver:"1.10.1+dfsg-5+deb7u9", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-gss-samples", ver:"1.10.1+dfsg-5+deb7u9", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-kdc", ver:"1.10.1+dfsg-5+deb7u9", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-kdc-ldap", ver:"1.10.1+dfsg-5+deb7u9", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-locales", ver:"1.10.1+dfsg-5+deb7u9", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-multidev", ver:"1.10.1+dfsg-5+deb7u9", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-pkinit", ver:"1.10.1+dfsg-5+deb7u9", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"krb5-user", ver:"1.10.1+dfsg-5+deb7u9", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libgssapi-krb5-2", ver:"1.10.1+dfsg-5+deb7u9", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libgssrpc4", ver:"1.10.1+dfsg-5+deb7u9", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libk5crypto3", ver:"1.10.1+dfsg-5+deb7u9", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkadm5clnt-mit8", ver:"1.10.1+dfsg-5+deb7u9", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkadm5srv-mit8", ver:"1.10.1+dfsg-5+deb7u9", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkdb5-6", ver:"1.10.1+dfsg-5+deb7u9", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkrb5-3", ver:"1.10.1+dfsg-5+deb7u9", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkrb5-dbg", ver:"1.10.1+dfsg-5+deb7u9", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkrb5-dev", ver:"1.10.1+dfsg-5+deb7u9", rls:"DEB7"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libkrb5support0", ver:"1.10.1+dfsg-5+deb7u9", rls:"DEB7"))) {
    report += res;
  }

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

exit(0);