Vulnerabilities > CVE-2001-0843 - Unspecified vulnerability in Squid web Proxy

#
# This script was written by Adam Baldwin <[email protected]>
#
# See the Nessus Scripts License for details
#

# Changes by Tenable:
# - Revised plugin title (6/16/09)
# - Standardized product name in title (6/25/09)
# - Change plugin family (7/6/09)
# - Updated to use compat.inc, added CVSS score (11/20/2009)


include("compat.inc");

if(description)
{
 script_id(10768);
 script_version ("1.28");
 script_cve_id("CVE-2001-0843");
 script_bugtraq_id(3354);

 script_name(english:"Squid mkdir-only PUT Request Remote DoS");

 script_set_attribute(attribute:"synopsis", value:
"The remote host has an application that is affected by a denial
of service vulnerability." );
 script_set_attribute(attribute:"description", value:
"A problem exists in the way the remote Squid proxy server handles a 
special 'mkdir-only' PUT request, and causes denial of service to the 
proxy server.

An attacker may use this flaw to prevent your LAN users from accessing
the web." );
 script_set_attribute(attribute:"solution", value:
"Apply the vendor released patch, for squid it is located here: 
www.squid-cache.org.  You can also protect yourself by enabling access 
lists on your proxy.

*** Note that Nessus solely relied on the version number of the remote
*** proxy to issue this warning" );
 script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/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_publication_date", value: "2001/09/26");
 script_set_attribute(attribute:"vuln_publication_date", value: "2001/09/21");
 script_cvs_date("Date: 2018/08/22 16:49:14");
script_set_attribute(attribute:"plugin_type", value:"remote");
script_set_attribute(attribute:"cpe", value:"cpe:/a:squid-cache:squid");
script_end_attributes();

 script_summary(english:"Determines via ver. if a proxy server is DoSable");
 script_category(ACT_GATHER_INFO);
 script_family(english:"Firewalls");
 script_copyright(english:"This script is Copyright (C) 2001-2018 Adam Baldwin");
 script_dependencies("find_service1.nasl", "proxy_use.nasl");
 script_require_ports("Services/http_proxy", 8080, 3128);
 exit(0);
}

#
# Code Starts Here
#

include("http_func.inc");

port = get_kb_item("Services/http_proxy");
if(!port)port = 3128;
if(!get_port_state(port))port = 8080;


if(get_port_state(port))
{
 soc = http_open_socket(port);
 if(soc)
 {
  sData = http_get(item:"http://www.$$$$$", port:port);
  send(socket:soc, data:sData);
  data = http_recv(socket:soc);
  http_close_socket(soc);
  data = egrep(pattern: "^Server: ", string: data);

  if("Squid" >< data)
  {
   data = data - string("Server: Squid/");
   #See if it's a vulnerable version
   #CHECK VERSION 2.3
   if(("2.3" >< data) && ("STABLE2" >< data) ||
  	 		 ("STABLE3" >< data) ||
			 ("STABLE4" >< data) ||
			 ("STABLE5" >< data))
   {
    security_warning(port);
   }
   #CHECK VERSION 2.4
   if(("2.4" >< data) && ("STABLE1" >< data) || 
			 ("PRE-STABLE2" >< data) || 
			 ("PRE-STABLE" >< data) ||
			 ("DEVEL4" >< data) ||
			 ("DEVEL2" >< data))
   {
    security_warning(port);
   }
  }
 }
}

#%NASL_MIN_LEVEL 80502

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Mandrake Linux Security Advisory MDKSA-2001:088. 
# The text itself is copyright (C) Mandriva S.A.
#

include("compat.inc");

if (description)
{
  script_id(13901);
  script_version ("1.17");
  script_cvs_date("Date: 2019/08/02 13:32:46");

  script_cve_id("CVE-2001-0843");
  script_xref(name:"MDKSA", value:"2001:088");

  script_name(english:"Mandrake Linux Security Advisory : squid (MDKSA-2001:088)");
  script_summary(english:"Checks rpm output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Mandrake Linux host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Vladimir Ivaschenko found a problem in the squid proxy server. Certain
FTP requests could cause the squid daemon to abort, making it
unavailable for a few seconds. If enough of these requests are sent in
a short period of time, the squid daemon will not restart itself."
  );
  # http://www.squid-cache.org/bugs/show_bug.cgi?id=233
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugs.squid-cache.org/show_bug.cgi?id=233"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected squid package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:squid");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mandrakesoft:mandrake_linux:7.1");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mandrakesoft:mandrake_linux:7.2");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mandrakesoft:mandrake_linux:8.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mandrakesoft:mandrake_linux:8.1");

  script_set_attribute(attribute:"patch_publication_date", value:"2001/11/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2004/07/31");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2004-2019 Tenable Network Security, Inc.");
  script_family(english:"Mandriva Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/Mandrake/release", "Host/Mandrake/rpm-list");

  exit(0);
}


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


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Mandrake/release")) audit(AUDIT_OS_NOT, "Mandriva / Mandake Linux");
if (!get_kb_item("Host/Mandrake/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu !~ "^(amd64|i[3-6]86|x86_64)$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Mandriva / Mandrake Linux", cpu);


flag = 0;
if (rpm_check(release:"MDK7.1", cpu:"i386", reference:"squid-2.3.STABLE5-2.3mdk", yank:"mdk")) flag++;

if (rpm_check(release:"MDK7.2", cpu:"i386", reference:"squid-2.3.STABLE5-2.2mdk", yank:"mdk")) flag++;

if (rpm_check(release:"MDK8.0", cpu:"i386", reference:"squid-2.3.STABLE5-2.1mdk", yank:"mdk")) flag++;

if (rpm_check(release:"MDK8.1", cpu:"i386", reference:"squid-2.4.STABLE1-8.1mdk", yank:"mdk")) flag++;


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

#%NASL_MIN_LEVEL 80502

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-077. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(14914);
  script_version("1.17");
  script_cvs_date("Date: 2019/08/02 13:32:16");

  script_cve_id("CVE-2001-0843");
  script_bugtraq_id(3354);
  script_xref(name:"DSA", value:"077");

  script_name(english:"Debian DSA-077-1 : squid - remote DoS");
  script_summary(english:"Checks dpkg output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Vladimir Ivaschenko found a problem in squid (a popular proxy cache).
 He discovered that there was a flaw in the code to handle FTP PUT
 commands: when a mkdir-only request was done squid would detect an
 internal error and exit. Since squid is configured to restart itself
 on problems this is not a big problem."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.debian.org/security/2001/dsa-077"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"This has been fixed in version 2.2.5-3.2. This problem is logged as
bug 233 in the squid bugtracker and will also be fixed in future squid
releases."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:H/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No exploit is required");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:squid");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:2.2");

  script_set_attribute(attribute:"patch_publication_date", value:"2001/09/24");
  script_set_attribute(attribute:"plugin_publication_date", value:"2004/09/29");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2004-2019 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:"2.2", prefix:"squid", reference:"2.2.5-3.2")) flag++;
if (deb_check(release:"2.2", prefix:"squid-cgi", reference:"2.2.5-3.2")) flag++;
if (deb_check(release:"2.2", prefix:"squidclient", reference:"2.2.5-3.2")) 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");