SUSE: Security Advisory (SUSE-SU-2018:0846-1)

# SPDX-FileCopyrightText: 2021 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("1.3.6.1.4.1.25623.1.1.4.2018.0846.1");
  script_cve_id("CVE-2018-5729", "CVE-2018-5730");
  script_tag(name:"creation_date", value:"2021-04-19 00:00:00 +0000 (Mon, 19 Apr 2021)");
  script_version("2025-08-15T15:42:25+0000");
  script_tag(name:"last_modification", value:"2025-08-15 15:42:25 +0000 (Fri, 15 Aug 2025)");
  script_tag(name:"cvss_base", value:"6.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:P/I:P/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2018-03-29 15:52:53 +0000 (Thu, 29 Mar 2018)");

  script_name("SUSE: Security Advisory (SUSE-SU-2018:0846-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2021 Greenbone AG");
  script_family("SuSE Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/suse_sles", "ssh/login/rpms", re:"ssh/login/release=(SLES12\.0SP2|SLES12\.0SP3)");

  script_xref(name:"Advisory-ID", value:"SUSE-SU-2018:0846-1");
  script_xref(name:"URL", value:"https://www.suse.com/support/update/announcement/2018/suse-su-20180846-1.html");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/1057662");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/1081725");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/1083926");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/1083927");
  script_xref(name:"URL", value:"https://lists.suse.com/pipermail/sle-security-updates/2018-March/003856.html");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'krb5' package(s) announced via the SUSE-SU-2018:0846-1 advisory.");

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

  script_tag(name:"insight", value:"This update for krb5 provides the following fixes:

Security issues fixed:

- CVE-2018-5730: DN container check bypass by supplying special crafted data (bsc#1083927).
- CVE-2018-5729: Null pointer dereference in kadmind or DN container check bypass by supplying special crafted data (bsc#1083926).

Non-security issues fixed:

- Make it possible for legacy applications (e.g. SAP Netweaver) to remain compatible with
 newer Kerberos. System administrators who are experiencing this kind of compatibility
 issues may set the environment variable GSSAPI_ASSUME_MECH_MATCH to a non-empty value,
 and make sure the environment variable is visible and effective to the application
 startup script. (bsc#1057662)
- Fix a GSS failure in legacy applications by not indicating deprecated GSS mechanisms in
 gss_indicate_mech() list. (bsc#1081725)");

  script_tag(name:"affected", value:"'krb5' package(s) on SUSE Linux Enterprise Desktop 12-SP2, SUSE Linux Enterprise Desktop 12-SP3, SUSE Linux Enterprise Server 12-SP2, SUSE Linux Enterprise Server 12-SP3, SUSE Linux Enterprise Server for Raspberry Pi 12-SP2, SUSE Linux Enterprise Server for SAP Applications 12-SP2, SUSE Linux Enterprise Server for SAP Applications 12-SP3.");

  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-rpm.inc");

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

res = "";
report = "";

if(release == "SLES12.0SP2") {

  if(!isnull(res = isrpmvuln(pkg:"krb5", rpm:"krb5~1.12.5~40.23.2", rls:"SLES12.0SP2"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"krb5-32bit", rpm:"krb5-32bit~1.12.5~40.23.2", rls:"SLES12.0SP2"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"krb5-client", rpm:"krb5-client~1.12.5~40.23.2", rls:"SLES12.0SP2"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"krb5-doc", rpm:"krb5-doc~1.12.5~40.23.2", rls:"SLES12.0SP2"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"krb5-plugin-kdb-ldap", rpm:"krb5-plugin-kdb-ldap~1.12.5~40.23.2", rls:"SLES12.0SP2"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"krb5-plugin-preauth-otp", rpm:"krb5-plugin-preauth-otp~1.12.5~40.23.2", rls:"SLES12.0SP2"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"krb5-plugin-preauth-pkinit", rpm:"krb5-plugin-preauth-pkinit~1.12.5~40.23.2", rls:"SLES12.0SP2"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"krb5-server", rpm:"krb5-server~1.12.5~40.23.2", rls:"SLES12.0SP2"))) {
    report += res;
  }

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

if(release == "SLES12.0SP3") {

  if(!isnull(res = isrpmvuln(pkg:"krb5", rpm:"krb5~1.12.5~40.23.2", rls:"SLES12.0SP3"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"krb5-32bit", rpm:"krb5-32bit~1.12.5~40.23.2", rls:"SLES12.0SP3"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"krb5-client", rpm:"krb5-client~1.12.5~40.23.2", rls:"SLES12.0SP3"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"krb5-doc", rpm:"krb5-doc~1.12.5~40.23.2", rls:"SLES12.0SP3"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"krb5-plugin-kdb-ldap", rpm:"krb5-plugin-kdb-ldap~1.12.5~40.23.2", rls:"SLES12.0SP3"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"krb5-plugin-preauth-otp", rpm:"krb5-plugin-preauth-otp~1.12.5~40.23.2", rls:"SLES12.0SP3"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"krb5-plugin-preauth-pkinit", rpm:"krb5-plugin-preauth-pkinit~1.12.5~40.23.2", rls:"SLES12.0SP3"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"krb5-server", rpm:"krb5-server~1.12.5~40.23.2", rls:"SLES12.0SP3"))) {
    report += res;
  }

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

exit(0);