Huawei EulerOS: Security Advisory for libtasn1 (EulerOS-SA-2019-1162)

# 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("1.3.6.1.4.1.25623.1.1.2.2019.1162");
  script_cve_id("CVE-2017-6891");
  script_tag(name:"creation_date", value:"2020-01-23 11:33:22 +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:"6.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:P/I:P/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2017-06-02 12:41:55 +0000 (Fri, 02 Jun 2017)");

  script_name("Huawei EulerOS: Security Advisory for libtasn1 (EulerOS-SA-2019-1162)");
  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-2019-1162");
  script_xref(name:"URL", value:"https://developer.huaweicloud.com/intl/en-us/euleros/securitydetail.html?secId=EulerOS-SA-2019-1162");

  script_tag(name:"summary", value:"The remote host is missing an update for the Huawei EulerOS 'libtasn1' package(s) announced via the EulerOS-SA-2019-1162 advisory.");

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

  script_tag(name:"insight", value:"Two errors in the 'asn1_find_node()' function (lib/parser_aux.c) within GnuTLS libtasn1 version 4.10 can be exploited to cause a stacked-based buffer overflow by tricking a user into processing a specially crafted assignments file via the e.g. asn1Coding utility.(CVE-2017-6891)");

  script_tag(name:"affected", value:"'libtasn1' 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:"libtasn1", rpm:"libtasn1~4.10~1.h1", rls:"EULEROSVIRT-2.5.3"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libtasn1-devel", rpm:"libtasn1-devel~4.10~1.h1", rls:"EULEROSVIRT-2.5.3"))) {
    report += res;
  }

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

exit(0);