Huawei EulerOS: Security Advisory for glibc (EulerOS-SA-2020-1956)

# 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("1.3.6.1.4.1.25623.1.1.2.2020.1956");
  script_cve_id("CVE-2020-1751", "CVE-2020-6096");
  script_tag(name:"creation_date", value:"2020-09-08 08:07:03 +0000 (Tue, 08 Sep 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:H/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2020-04-20 15:15:55 +0000 (Mon, 20 Apr 2020)");

  script_name("Huawei EulerOS: Security Advisory for glibc (EulerOS-SA-2020-1956)");
  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=EULEROSVIRTARM64\-3\.0\.2\.0");

  script_xref(name:"Advisory-ID", value:"EulerOS-SA-2020-1956");
  script_xref(name:"URL", value:"https://developer.huaweicloud.com/intl/en-us/euleros/securitydetail.html?secId=EulerOS-SA-2020-1956");

  script_tag(name:"summary", value:"The remote host is missing an update for the Huawei EulerOS 'glibc' package(s) announced via the EulerOS-SA-2020-1956 advisory.");

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

  script_tag(name:"insight", value:"An out-of-bounds write vulnerability was found in glibc when handling signal trampolines on PowerPC. The backtrace function did not properly check the array bounds when storing the frame address resulting in a denial of service or potential code execution. The highest threat from this vulnerability is to system availability.(CVE-2020-1751)

A signed comparison vulnerability was found in GNU libc in the ARMv7 implementation of memcpy(). The flaw affects the third argument to memcpy() that specifies the number of bytes to copy. An underflow on the third argument could lead to undefined behavior such as out-of-bounds memory write and potentially remote code execution.(CVE-2020-6096)");

  script_tag(name:"affected", value:"'glibc' package(s) on Huawei EulerOS Virtualization for ARM 64 3.0.2.0.");

  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 == "EULEROSVIRTARM64-3.0.2.0") {

  if(!isnull(res = isrpmvuln(pkg:"glibc", rpm:"glibc~2.28~9.h43", rls:"EULEROSVIRTARM64-3.0.2.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"glibc-all-langpacks", rpm:"glibc-all-langpacks~2.28~9.h43", rls:"EULEROSVIRTARM64-3.0.2.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"glibc-common", rpm:"glibc-common~2.28~9.h43", rls:"EULEROSVIRTARM64-3.0.2.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"glibc-devel", rpm:"glibc-devel~2.28~9.h43", rls:"EULEROSVIRTARM64-3.0.2.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"glibc-headers", rpm:"glibc-headers~2.28~9.h43", rls:"EULEROSVIRTARM64-3.0.2.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libnsl", rpm:"libnsl~2.28~9.h43", rls:"EULEROSVIRTARM64-3.0.2.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"nscd", rpm:"nscd~2.28~9.h43", rls:"EULEROSVIRTARM64-3.0.2.0"))) {
    report += res;
  }

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

exit(0);