Debian DSA-029-2 : proftpd - remote DOS & potential buffer overflow

#%NASL_MIN_LEVEL 70300

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-029. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

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

if (description)
{
  script_id(14866);
  script_version("1.17");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/04");

  script_cve_id("CVE-2001-0136", "CVE-2001-0318");
  script_xref(name:"DSA", value:"029");

  script_name(english:"Debian DSA-029-2 : proftpd - remote DOS & potential buffer overflow");
  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:
"The following problems have been reported for the version of proftpd
in Debian 2.2 (potato) :

  - There is a memory leak in the SIZE command which can
    result in a denial of service, as reported by Wojciech
    Purczynski. This is only a problem if proftpd cannot
    write to its scoreboard file; the default configuration
    of proftpd in Debian is not vulnerable.
  - A similar memory leak affects the USER command, also as
    reported by Wojciech Purczynski. The proftpd in Debian
    2.2 is susceptible to this vulnerability; an attacker
    can cause the proftpd daemon to crash by exhausting its
    available memory.

  - There were some format string vulnerabilities reported
    by Przemyslaw Frasunek. These are not known to have
    exploits, but have been corrected as a precaution."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.debian.org/security/2001/dsa-029"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"All three of the above vulnerabilities have been corrected in
proftpd-1.2.0pre10-2potato1. We recommend you upgrade your proftpd
package immediately."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploited_by_malware", value:"true");

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

  script_set_attribute(attribute:"patch_publication_date", value:"2001/02/11");
  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) 2004-2021 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:"2.2", prefix:"proftpd", reference:"1.2.0pre10-2.0potato1")) flag++;

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