Amazon Linux 2023 : exiv2, exiv2-devel, exiv2-libs (ALAS2023-2026-1480)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux 2023 Security Advisory ALAS2023-2026-1480.
##

include('compat.inc');

if (description)
{
  script_id(304280);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/03/30");

  script_cve_id("CVE-2026-25884", "CVE-2026-27596", "CVE-2026-27631");
  script_xref(name:"IAVA", value:"2026-A-0190");

  script_name(english:"Amazon Linux 2023 : exiv2, exiv2-devel, exiv2-libs (ALAS2023-2026-1480)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Amazon Linux 2023 host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1480 advisory.

    Exiv2 is a C++ library and a command-line utility to read, write, delete and modify Exif, IPTC, XMP and
    ICC image metadata. Prior to version 0.28.8, an out-of-bounds read was found. The vulnerability is in the
    CRW image parser. This issue has been patched in version 0.28.8. (CVE-2026-25884)

    Exiv2 is a C++ library and a command-line utility to read, write, delete and modify Exif, IPTC, XMP and
    ICC image metadata. Prior to version 0.28.8, an out-of-bounds read was found in Exiv2. The vulnerability
    is in the preview component, which is only triggered when running Exiv2 with an extra command line
    argument, like -pp. The out-of-bounds read is at a 4GB offset, which usually causes Exiv2 to crash. This
    issue has been patched in version 0.28.8. (CVE-2026-27596)

    Exiv2 is a C++ library and a command-line utility to read, write, delete and modify Exif, IPTC, XMP and
    ICC image metadata. Prior to version 0.28.8, an uncaught exception was found in Exiv2. The vulnerability
    is in the preview component, which is only triggered when running Exiv2 with an extra command line
    argument, like -pp. Due to an integer overflow, the code attempts to create a huge std::vector, which
    causes Exiv2 to crash with an uncaught exception. This issue has been patched in version 0.28.8.
    (CVE-2026-27631)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com//AL2023/ALAS2023-2026-1480.html");
  script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/faqs.html");
  script_set_attribute(attribute:"see_also", value:"https://explore.alas.aws.amazon.com/CVE-2026-25884.html");
  script_set_attribute(attribute:"see_also", value:"https://explore.alas.aws.amazon.com/CVE-2026-27596.html");
  script_set_attribute(attribute:"see_also", value:"https://explore.alas.aws.amazon.com/CVE-2026-27631.html");
  script_set_attribute(attribute:"solution", value:
"Run 'dnf update exiv2 --releasever 2023.10.20260325' or
  or 'dnf update --advisory ALAS2023-2026-1480 --releasever 2023.10.20260325' to update your system.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:P");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-25884");
  script_set_attribute(attribute:"cvss4_score_source", value:"CVE-2026-27631");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/03/02");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/03/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/03/30");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:exiv2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:exiv2-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:exiv2-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:exiv2-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:exiv2-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:exiv2-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:exiv2-libs-debuginfo");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux:2023");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Amazon Linux Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/AmazonLinux/release", "Host/AmazonLinux/rpm-list");

  exit(0);
}

include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);

var alas_release = get_kb_item("Host/AmazonLinux/release");
if (isnull(alas_release) || !strlen(alas_release)) audit(AUDIT_OS_NOT, "Amazon Linux");
var os_ver = pregmatch(pattern: "^AL(A|\d+|-\d+)", string:alas_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Amazon Linux");
os_ver = os_ver[1];
if (os_ver != "-2023")
{
  if (os_ver == 'A') os_ver = 'AMI';
  audit(AUDIT_OS_NOT, "Amazon Linux 2023", "Amazon Linux " + os_ver);
}

if (!get_kb_item("Host/AmazonLinux/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

var pkgs = [
    {'reference':'exiv2-0.28.5-132.amzn2023', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'exiv2-0.28.5-132.amzn2023', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'exiv2-debuginfo-0.28.5-132.amzn2023', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'exiv2-debuginfo-0.28.5-132.amzn2023', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'exiv2-debugsource-0.28.5-132.amzn2023', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'exiv2-debugsource-0.28.5-132.amzn2023', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'exiv2-devel-0.28.5-132.amzn2023', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'exiv2-devel-0.28.5-132.amzn2023', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'exiv2-doc-0.28.5-132.amzn2023', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'exiv2-libs-0.28.5-132.amzn2023', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'exiv2-libs-0.28.5-132.amzn2023', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'exiv2-libs-debuginfo-0.28.5-132.amzn2023', 'cpu':'aarch64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'exiv2-libs-debuginfo-0.28.5-132.amzn2023', 'cpu':'x86_64', 'release':'AL-2023', 'rpm_spec_vers_cmp':TRUE}
];

var flag = 0;
foreach var package_array ( pkgs ) {
  var reference = NULL;
  var _release = NULL;
  var sp = NULL;
  var _cpu = NULL;
  var el_string = NULL;
  var rpm_spec_vers_cmp = NULL;
  var epoch = NULL;
  var allowmaj = NULL;
  var exists_check = NULL;
  var cves = NULL;
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (!empty_or_null(package_array['release'])) _release = package_array['release'];
  if (!empty_or_null(package_array['sp'])) sp = package_array['sp'];
  if (!empty_or_null(package_array['cpu'])) _cpu = package_array['cpu'];
  if (!empty_or_null(package_array['el_string'])) el_string = package_array['el_string'];
  if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
  if (!empty_or_null(package_array['epoch'])) epoch = package_array['epoch'];
  if (!empty_or_null(package_array['allowmaj'])) allowmaj = package_array['allowmaj'];
  if (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
  if (!empty_or_null(package_array['cves'])) cves = package_array['cves'];
  if (reference && _release && (!exists_check || rpm_exists(release:_release, rpm:exists_check))) {
    if (rpm_check(release:_release, sp:sp, cpu:_cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj, cves:cves)) flag++;
  }
}

if (flag)
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "exiv2 / exiv2-debuginfo / exiv2-debugsource / etc");
}