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nessusThis script is Copyright (C) 2017-2021 Tenable Network Security, Inc.DEBIAN_DLA-1175.NASL
HistoryNov 20, 2017 - 12:00 a.m.

Debian DLA-1175-1 : lynx-cur security update

2017-11-2000:00:00
This script is Copyright (C) 2017-2021 Tenable Network Security, Inc.
www.tenable.com
15

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

5 Medium

CVSS2

Access Vector

Access Complexity

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:N/C:P/I:N/A:N

0.002 Low

EPSS

Percentile

52.6%

It was discovered that there was a use-after-free vulnerability in the HTML parser of lynx-cur, a terminal-based web browser. This could have led to memory/information disclosure.

For Debian 7 ‘Wheezy’, this issue has been fixed in lynx-cur version 2.8.8dev.12-2+deb7u2.

We recommend that you upgrade your lynx-cur 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.

#%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-1175-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

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

if (description)
{
  script_id(104678);
  script_version("3.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/11");

  script_cve_id("CVE-2017-1000211");

  script_name(english:"Debian DLA-1175-1 : lynx-cur security update");
  script_summary(english:"Checks dpkg output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"It was discovered that there was a use-after-free vulnerability in the
HTML parser of lynx-cur, a terminal-based web browser. This could have
led to memory/information disclosure.

For Debian 7 'Wheezy', this issue has been fixed in lynx-cur version
2.8.8dev.12-2+deb7u2.

We recommend that you upgrade your lynx-cur 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/2017/11/msg00021.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/wheezy/lynx-cur"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Upgrade the affected lynx, lynx-cur, and lynx-cur-wrapper 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:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:lynx");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:lynx-cur");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:lynx-cur-wrapper");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:7.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2017/11/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/11/20");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2017-2021 Tenable Network Security, Inc.");
  script_family(english:"Debian Local Security Checks");

  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:"lynx", reference:"2.8.8dev.12-2+deb7u2")) flag++;
if (deb_check(release:"7.0", prefix:"lynx-cur", reference:"2.8.8dev.12-2+deb7u2")) flag++;
if (deb_check(release:"7.0", prefix:"lynx-cur-wrapper", reference:"2.8.8dev.12-2+deb7u2")) 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");
VendorProductVersionCPE
debiandebian_linuxlynxp-cpe:/a:debian:debian_linux:lynx
debiandebian_linuxlynx-curp-cpe:/a:debian:debian_linux:lynx-cur
debiandebian_linuxlynx-cur-wrapperp-cpe:/a:debian:debian_linux:lynx-cur-wrapper
debiandebian_linux7.0cpe:/o:debian:debian_linux:7.0

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

5 Medium

CVSS2

Access Vector

Access Complexity

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:N/C:P/I:N/A:N

0.002 Low

EPSS

Percentile

52.6%