Debian DLA-1080-1 : gnupg 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-1080-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

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

if (description)
{
  script_id(102888);
  script_version("3.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/11/25");

  script_cve_id("CVE-2017-7526");

  script_name(english:"Debian DLA-1080-1 : gnupg security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"Daniel J. Bernstein, Joachim Breitner, Daniel Genkin, Leon Groot
Bruinderink, Nadia Heninger, Tanja Lange, Christine van Vredendaal and
Yuval Yarom discovered that gnupg is prone to a local side-channel
attack allowing full key recovery for RSA-1024.

See https://eprint.iacr.org/2017/627 for details.

For Debian 7 'Wheezy', these problems have been fixed in version
1.4.12-7+deb7u9.

We recommend that you upgrade your gnupg 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://eprint.iacr.org/2017/627");
  script_set_attribute(attribute:"see_also", value:"https://lists.debian.org/debian-lts-announce/2017/08/msg00030.html");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/wheezy/gnupg");
  script_set_attribute(attribute:"solution", value:
"Upgrade the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2017-7526");

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

  script_set_attribute(attribute:"patch_publication_date", value:"2017/08/31");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/09/01");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gnupg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gnupg-curl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gnupg-udeb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gpgv");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gpgv-udeb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gpgv-win32");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:7.0");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2017-2025 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:"7.0", prefix:"gnupg", reference:"1.4.12-7+deb7u9")) flag++;
if (deb_check(release:"7.0", prefix:"gnupg-curl", reference:"1.4.12-7+deb7u9")) flag++;
if (deb_check(release:"7.0", prefix:"gnupg-udeb", reference:"1.4.12-7+deb7u9")) flag++;
if (deb_check(release:"7.0", prefix:"gpgv", reference:"1.4.12-7+deb7u9")) flag++;
if (deb_check(release:"7.0", prefix:"gpgv-udeb", reference:"1.4.12-7+deb7u9")) flag++;
if (deb_check(release:"7.0", prefix:"gpgv-win32", reference:"1.4.12-7+deb7u9")) 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");