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nessusThis script is Copyright (C) 2006-2021 Tenable Network Security, Inc.GENTOO_GLSA-200609-13.NASL
HistorySep 27, 2006 - 12:00 a.m.

GLSA-200609-13 : gzip: Multiple vulnerabilities

2006-09-2700:00:00
This script is Copyright (C) 2006-2021 Tenable Network Security, Inc.
www.tenable.com
7

The remote host is affected by the vulnerability described in GLSA-200609-13 (gzip: Multiple vulnerabilities)

Tavis Ormandy of the Google Security Team has reported multiple     vulnerabilities in gzip. A stack buffer modification vulnerability was     discovered in the LZH decompression code, where a pathological data     stream may result in the modification of stack data such as frame     pointer, return address or saved registers. A static buffer underflow     was discovered in the pack decompression support, allowing a specially     crafted pack archive to underflow a .bss buffer. A static buffer     overflow was uncovered in the LZH decompression code, allowing a data     stream consisting of pathological huffman codes to overflow a .bss     buffer. Multiple infinite loops were also uncovered in the LZH     decompression code.

Impact :

A remote attacker may create a specially crafted gzip archive, which     when decompressed by a user or automated system exectues arbitrary code     with the privileges of the user id invoking gzip. The infinite loops     may be abused by an attacker to disrupt any automated systems invoking     gzip to handle data decompression.

Workaround :

There is no known workaround at this time.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Gentoo Linux Security Advisory GLSA 200609-13.
#
# The advisory text is Copyright (C) 2001-2016 Gentoo Foundation, Inc.
# and licensed under the Creative Commons - Attribution / Share Alike 
# license. See http://creativecommons.org/licenses/by-sa/3.0/
#

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

if (description)
{
  script_id(22457);
  script_version("1.16");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");

  script_cve_id("CVE-2006-4334", "CVE-2006-4335", "CVE-2006-4336", "CVE-2006-4337", "CVE-2006-4338");
  script_xref(name:"GLSA", value:"200609-13");

  script_name(english:"GLSA-200609-13 : gzip: Multiple vulnerabilities");
  script_summary(english:"Checks for updated package(s) in /var/db/pkg");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Gentoo host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The remote host is affected by the vulnerability described in GLSA-200609-13
(gzip: Multiple vulnerabilities)

    Tavis Ormandy of the Google Security Team has reported multiple
    vulnerabilities in gzip. A stack buffer modification vulnerability was
    discovered in the LZH decompression code, where a pathological data
    stream may result in the modification of stack data such as frame
    pointer, return address or saved registers. A static buffer underflow
    was discovered in the pack decompression support, allowing a specially
    crafted pack archive to underflow a .bss buffer. A static buffer
    overflow was uncovered in the LZH decompression code, allowing a data
    stream consisting of pathological huffman codes to overflow a .bss
    buffer. Multiple infinite loops were also uncovered in the LZH
    decompression code.
  
Impact :

    A remote attacker may create a specially crafted gzip archive, which
    when decompressed by a user or automated system exectues arbitrary code
    with the privileges of the user id invoking gzip. The infinite loops
    may be abused by an attacker to disrupt any automated systems invoking
    gzip to handle data decompression.
  
Workaround :

    There is no known workaround at this time."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/200609-13"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"All gzip users should upgrade to the latest version:
    # emerge --sync
    # emerge --ask --oneshot --verbose '>=app-arch/gzip-1.3.5-r9'"
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/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:gentoo:linux:gzip");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2006/09/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2006/09/27");
  script_set_attribute(attribute:"vuln_publication_date", value:"2006/09/20");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2006-2021 Tenable Network Security, Inc.");
  script_family(english:"Gentoo Local Security Checks");

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

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("qpkg.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Gentoo/release")) audit(AUDIT_OS_NOT, "Gentoo");
if (!get_kb_item("Host/Gentoo/qpkg-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;

if (qpkg_check(package:"app-arch/gzip", unaffected:make_list("ge 1.3.5-r9"), vulnerable:make_list("lt 1.3.5-r9"))) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:qpkg_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = qpkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "gzip");
}
VendorProductVersion
gentoolinuxgzip
gentoolinux
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