Debian DLA-2382-1 : curl security update

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-2382-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(140808);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/02/20");

  script_cve_id("CVE-2020-8231");
  script_xref(name:"IAVA", value:"2020-A-0389-S");

  script_name(english:"Debian DLA-2382-1 : curl security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"An issue has been found in curl, a command line tool for transferring
data with URL syntax. In rare circumstances, when using the multi API
of curl in combination with CURLOPT_CONNECT_ONLY, the wrong connection
might be used when transfering data later.

For Debian 9 stretch, this problem has been fixed in version
7.52.1-5+deb9u12.

We recommend that you upgrade your curl packages.

For the detailed security status of curl please refer to its security
tracker page at: https://security-tracker.debian.org/tracker/curl

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/2020/09/msg00020.html");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/stretch/curl");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/source-package/curl");
  script_set_attribute(attribute:"solution", value:
"Upgrade the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N");
  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:N/S:U/C:H/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-8231");

  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:"2020/12/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/09/26");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/09/28");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:curl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libcurl3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libcurl3-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libcurl3-gnutls");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libcurl3-nss");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libcurl4-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libcurl4-gnutls-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libcurl4-nss-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libcurl4-openssl-dev");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:9.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"II");
  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:"9.0", prefix:"curl", reference:"7.52.1-5+deb9u12")) flag++;
if (deb_check(release:"9.0", prefix:"libcurl3", reference:"7.52.1-5+deb9u12")) flag++;
if (deb_check(release:"9.0", prefix:"libcurl3-dbg", reference:"7.52.1-5+deb9u12")) flag++;
if (deb_check(release:"9.0", prefix:"libcurl3-gnutls", reference:"7.52.1-5+deb9u12")) flag++;
if (deb_check(release:"9.0", prefix:"libcurl3-nss", reference:"7.52.1-5+deb9u12")) flag++;
if (deb_check(release:"9.0", prefix:"libcurl4-doc", reference:"7.52.1-5+deb9u12")) flag++;
if (deb_check(release:"9.0", prefix:"libcurl4-gnutls-dev", reference:"7.52.1-5+deb9u12")) flag++;
if (deb_check(release:"9.0", prefix:"libcurl4-nss-dev", reference:"7.52.1-5+deb9u12")) flag++;
if (deb_check(release:"9.0", prefix:"libcurl4-openssl-dev", reference:"7.52.1-5+deb9u12")) 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");