Debian DSA-058-1 : exim - local printf format attack

2004-09-29T00:00:00
ID DEBIAN_DSA-058.NASL
Type nessus
Reporter This script is Copyright (C) 2004-2021 Tenable Network Security, Inc.
Modified 2004-09-29T00:00:00

Description

Megyer Laszlo found a printf format bug in the exim mail transfer agent. The code that checks the header syntax of an email logs an error without protecting itself against printf format attacks. It's only exploitable locally with the -bS switch (in batched SMTP mode).

                                        
                                            #%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-058. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

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

if (description)
{
  script_id(14895);
  script_version("1.16");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/04");

  script_cve_id("CVE-2001-0690");
  script_xref(name:"DSA", value:"058");

  script_name(english:"Debian DSA-058-1 : exim - local printf format attack");
  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:
"Megyer Laszlo found a printf format bug in the exim mail transfer
 agent. The code that checks the header syntax of an email logs an
 error without protecting itself against printf format attacks. It's
 only exploitable locally with the -bS switch (in batched SMTP mode)."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.debian.org/security/2001/dsa-058"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"This problem has been fixed in version 3.12-10.1. Since that code is
not turned on by default a standard installation is not vulnerable,
but we still recommend to upgrade your exim package."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");

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

  script_set_attribute(attribute:"patch_publication_date", value:"2001/06/10");
  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:"exim", reference:"3.12-10.1")) flag++;
if (deb_check(release:"2.2", prefix:"eximon", reference:"3.12-10.1")) 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");