Amazon Linux: Security Advisory (ALAS-2016-702)

# SPDX-FileCopyrightText: 2016 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("1.3.6.1.4.1.25623.1.0.120691");
  script_cve_id("CVE-2016-1978", "CVE-2016-1979");
  script_tag(name:"creation_date", value:"2016-10-26 12:38:08 +0000 (Wed, 26 Oct 2016)");
  script_version("2025-01-23T05:37:39+0000");
  script_tag(name:"last_modification", value:"2025-01-23 05:37:39 +0000 (Thu, 23 Jan 2025)");
  script_tag(name:"cvss_base", value:"7.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.0/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:"2017-11-04 01:29:00 +0000 (Sat, 04 Nov 2017)");

  script_name("Amazon Linux: Security Advisory (ALAS-2016-702)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2016 Greenbone AG");
  script_family("Amazon Linux Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/amazon_linux", "ssh/login/release");

  script_xref(name:"Advisory-ID", value:"ALAS-2016-702");
  script_xref(name:"URL", value:"https://alas.aws.amazon.com/ALAS-2016-702.html");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'nspr, nss-util, nss, nss-softokn' package(s) announced via the ALAS-2016-702 advisory.");

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

  script_tag(name:"insight", value:"A use-after-free flaw was found in the way NSS handled DHE (DiffieHellman key exchange) and ECDHE (Elliptic Curve Diffie-Hellman key exchange) handshake messages. A remote attacker could send a specially crafted handshake message that, when parsed by an application linked against NSS, would cause that application to crash or, under certain special conditions, execute arbitrary code using the permissions of the user running the application. (CVE-2016-1978)

A use-after-free flaw was found in the way NSS processed certain DER (Distinguished Encoding Rules) encoded cryptographic keys. An attacker could use this flaw to create a specially crafted DER encoded certificate which, when parsed by an application compiled against the NSS library, could cause that application to crash, or execute arbitrary code using the permissions of the user running the application. (CVE-2016-1979)");

  script_tag(name:"affected", value:"'nspr, nss-util, nss, nss-softokn' package(s) on Amazon Linux.");

  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 == "AMAZON") {

  if(!isnull(res = isrpmvuln(pkg:"nspr", rpm:"nspr~4.11.0~1.37.amzn1", rls:"AMAZON"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"nspr-debuginfo", rpm:"nspr-debuginfo~4.11.0~1.37.amzn1", rls:"AMAZON"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"nspr-devel", rpm:"nspr-devel~4.11.0~1.37.amzn1", rls:"AMAZON"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"nss", rpm:"nss~3.21.0~9.76.amzn1", rls:"AMAZON"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"nss-debuginfo", rpm:"nss-debuginfo~3.21.0~9.76.amzn1", rls:"AMAZON"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"nss-devel", rpm:"nss-devel~3.21.0~9.76.amzn1", rls:"AMAZON"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"nss-pkcs11-devel", rpm:"nss-pkcs11-devel~3.21.0~9.76.amzn1", rls:"AMAZON"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"nss-softokn", rpm:"nss-softokn~3.16.2.3~14.2.38.amzn1", rls:"AMAZON"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"nss-softokn-debuginfo", rpm:"nss-softokn-debuginfo~3.16.2.3~14.2.38.amzn1", rls:"AMAZON"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"nss-softokn-devel", rpm:"nss-softokn-devel~3.16.2.3~14.2.38.amzn1", rls:"AMAZON"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"nss-softokn-freebl", rpm:"nss-softokn-freebl~3.16.2.3~14.2.38.amzn1", rls:"AMAZON"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"nss-softokn-freebl-devel", rpm:"nss-softokn-freebl-devel~3.16.2.3~14.2.38.amzn1", rls:"AMAZON"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"nss-sysinit", rpm:"nss-sysinit~3.21.0~9.76.amzn1", rls:"AMAZON"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"nss-tools", rpm:"nss-tools~3.21.0~9.76.amzn1", rls:"AMAZON"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"nss-util", rpm:"nss-util~3.21.0~2.2.50.amzn1", rls:"AMAZON"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"nss-util-debuginfo", rpm:"nss-util-debuginfo~3.21.0~2.2.50.amzn1", rls:"AMAZON"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"nss-util-devel", rpm:"nss-util-devel~3.21.0~2.2.50.amzn1", rls:"AMAZON"))) {
    report += res;
  }

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

exit(0);