Debian DLA-2222-1 : libexif security update

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-2222-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(136952);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/08");

  script_cve_id(
    "CVE-2018-20030",
    "CVE-2020-13112",
    "CVE-2020-13113",
    "CVE-2020-13114"
  );

  script_name(english:"Debian DLA-2222-1 : libexif security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"Various minor vulnerabilities have been addredd in libexif, a library
to parse EXIF metadata files.

CVE-2018-20030

This issue had already been addressed via DLA-2214-1. However,
upstream provided an updated patch, so this has been followed up on.

CVE-2020-13112

Several buffer over-reads in EXIF MakerNote handling could have lead
to information disclosure and crashes. This issue is different from
already resolved CVE-2020-0093.

CVE-2020-13113

Use of uninitialized memory in EXIF Makernote handling could have lead
to crashes and potential use-after-free conditions.

CVE-2020-13114

An unrestricted size in handling Canon EXIF MakerNote data could have
lead to consumption of large amounts of compute time for decoding EXIF
data.

For Debian 8 'Jessie', these problems have been fixed in version
0.6.21-2+deb8u3.

We recommend that you upgrade your libexif packages.

NOTE: Tenable Network Security has extracted the preceding description
block directly from the DLA security advisory. Tenable has attempted
to automatically clean and format it as much as possible without
introducing additional issues.");
  script_set_attribute(attribute:"see_also", value:"https://lists.debian.org/debian-lts-announce/2020/05/msg00025.html");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/jessie/libexif");
  script_set_attribute(attribute:"solution", value:
"Upgrade the affected libexif-dev, and libexif12 packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-13113");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2020-13112");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/02/20");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/05/28");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/05/29");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libexif-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libexif12");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:8.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2020-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("debian_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (deb_check(release:"8.0", prefix:"libexif-dev", reference:"0.6.21-2+deb8u3")) flag++;
if (deb_check(release:"8.0", prefix:"libexif12", reference:"0.6.21-2+deb8u3")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:deb_report_get());
  else security_warning(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");