Huawei EulerOS: Security Advisory for krb5 (EulerOS-SA-2019-1167)

# 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("1.3.6.1.4.1.25623.1.1.2.2019.1167");
  script_cve_id("CVE-2017-11368", "CVE-2017-7562");
  script_tag(name:"creation_date", value:"2020-01-23 11:33:28 +0000 (Thu, 23 Jan 2020)");
  script_version("2024-02-05T14:36:56+0000");
  script_tag(name:"last_modification", value:"2024-02-05 14:36:56 +0000 (Mon, 05 Feb 2024)");
  script_tag(name:"cvss_base", value:"4.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:N/I:P/A:N");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2018-09-21 19:23:34 +0000 (Fri, 21 Sep 2018)");

  script_name("Huawei EulerOS: Security Advisory for krb5 (EulerOS-SA-2019-1167)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2020 Greenbone AG");
  script_family("Huawei EulerOS Local Security Checks");
  script_dependencies("gb_huawei_euleros_consolidation.nasl");
  script_mandatory_keys("ssh/login/euleros", "ssh/login/rpms", re:"ssh/login/release=EULEROSVIRT\-2\.5\.3");

  script_xref(name:"Advisory-ID", value:"EulerOS-SA-2019-1167");
  script_xref(name:"URL", value:"https://developer.huaweicloud.com/intl/en-us/euleros/securitydetail.html?secId=EulerOS-SA-2019-1167");

  script_tag(name:"summary", value:"The remote host is missing an update for the Huawei EulerOS 'krb5' package(s) announced via the EulerOS-SA-2019-1167 advisory.");

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

  script_tag(name:"insight", value:"An authentication bypass flaw was found in the way krb5's certauth interface handled the validation of client certificates. A remote attacker able to communicate with the KDC could potentially use this flaw to impersonate arbitrary principals under rare and erroneous circumstances. (CVE-2017-7562)

A denial of service flaw was found in MIT Kerberos krb5kdc service. An authenticated attacker could use this flaw to cause krb5kdc to exit with an assertion failure by making an invalid S4U2Self or S4U2Proxy request.(CVE-2017-11368)");

  script_tag(name:"affected", value:"'krb5' package(s) on Huawei EulerOS Virtualization 2.5.3.");

  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 == "EULEROSVIRT-2.5.3") {

  if(!isnull(res = isrpmvuln(pkg:"krb5-devel", rpm:"krb5-devel~1.15.1~19.h1", rls:"EULEROSVIRT-2.5.3"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"krb5-libs", rpm:"krb5-libs~1.15.1~19.h1", rls:"EULEROSVIRT-2.5.3"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"krb5-pkinit", rpm:"krb5-pkinit~1.15.1~19.h1", rls:"EULEROSVIRT-2.5.3"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"krb5-server", rpm:"krb5-server~1.15.1~19.h1", rls:"EULEROSVIRT-2.5.3"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"krb5-workstation", rpm:"krb5-workstation~1.15.1~19.h1", rls:"EULEROSVIRT-2.5.3"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libkadm5", rpm:"libkadm5~1.15.1~19.h1", rls:"EULEROSVIRT-2.5.3"))) {
    report += res;
  }

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

exit(0);