Huawei EulerOS: Security Advisory for nss (EulerOS-SA-2020-2500)

# 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("1.3.6.1.4.1.25623.1.1.2.2020.2500");
  script_cve_id("CVE-2019-17007", "CVE-2020-12399", "CVE-2020-12400", "CVE-2020-12403", "CVE-2020-25648");
  script_tag(name:"creation_date", value:"2020-12-01 06:58:34 +0000 (Tue, 01 Dec 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:"6.4");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:N/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2021-06-09 14:42:50 +0000 (Wed, 09 Jun 2021)");

  script_name("Huawei EulerOS: Security Advisory for nss (EulerOS-SA-2020-2500)");
  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=EULEROS\-2\.0SP9\-X86_64");

  script_xref(name:"Advisory-ID", value:"EulerOS-SA-2020-2500");
  script_xref(name:"URL", value:"https://developer.huaweicloud.com/intl/en-us/euleros/securitydetail.html?secId=EulerOS-SA-2020-2500");

  script_tag(name:"summary", value:"The remote host is missing an update for the Huawei EulerOS 'nss' package(s) announced via the EulerOS-SA-2020-2500 advisory.");

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

  script_tag(name:"insight", value:"NSS has shown timing differences when performing DSA signatures, which was exploitable and could eventually leak private keys. This vulnerability affects Thunderbird < 68.9.0, Firefox < 77, and Firefox ESR < 68.9.(CVE-2020-12399)

When converting coordinates from projective to affine, the modular inversion was not performed in constant time, resulting in a possible timing-based side channel attack. This vulnerability affects Firefox < 80 and Firefox for Android < 80.(CVE-2020-12400)

A flaw was found in the way CHACHA20-POLY1305 was implemented in NSS. When using multi-part Chacha20, it could cause out-of-bounds reads. This issue was fixed by explicitly disabling multi-part ChaCha20 (which was not functioning correctly) and strictly enforcing tag length. The highest threat from(CVE-2020-12403)

A flaw was found in the way NSS handled CCS (ChangeCipherSpec) messages in TLS 1.3. This flaw allows a remote attacker to send multiple CCS messages, causing a denial of service for servers compiled with the NSS library. The highest threat from this vulnerability is to system availability. This flaw affects NSS versions before 3.58.(CVE-2020-25648)

In Network Security Services before 3.44, a malformed Netscape Certificate Sequence can cause NSS to crash, resulting in a denial of service.(CVE-2019-17007)");

  script_tag(name:"affected", value:"'nss' package(s) on Huawei EulerOS V2.0SP9(x86_64).");

  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 == "EULEROS-2.0SP9-x86_64") {

  if(!isnull(res = isrpmvuln(pkg:"nss", rpm:"nss~3.40.1~11.h7.eulerosv2r9", rls:"EULEROS-2.0SP9-x86_64"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"nss-softokn", rpm:"nss-softokn~3.40.1~11.h7.eulerosv2r9", rls:"EULEROS-2.0SP9-x86_64"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"nss-util", rpm:"nss-util~3.40.1~11.h7.eulerosv2r9", rls:"EULEROS-2.0SP9-x86_64"))) {
    report += res;
  }

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

exit(0);