Debian DSA-1473-1 : scponly - design flaw

2008-01-27T00:00:00
ID DEBIAN_DSA-1473.NASL
Type nessus
Reporter This script is Copyright (C) 2008-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2020-04-02T00:00:00

Description

Joachim Breitner discovered that Subversion support in scponly is inherently insecure, allowing execution of arbitrary commands. Further investigation showed that rsync and Unison support suffer from similar issues. This set of issues has been assigned CVE-2007-6350.

In addition, it was discovered that it was possible to invoke scp with certain options that may lead to the execution of arbitrary commands (CVE-2007-6415 ).

This update removes Subversion, rsync and Unison support from the scponly package, and prevents scp from being invoked with the dangerous options.

                                        
                                            #%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-1473. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(30065);
  script_version("1.19");
  script_cvs_date("Date: 2019/08/02 13:32:21");

  script_cve_id("CVE-2007-6350", "CVE-2007-6415");
  script_xref(name:"DSA", value:"1473");

  script_name(english:"Debian DSA-1473-1 : scponly - design flaw");
  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:
"Joachim Breitner discovered that Subversion support in scponly is
inherently insecure, allowing execution of arbitrary commands. Further
investigation showed that rsync and Unison support suffer from similar
issues. This set of issues has been assigned CVE-2007-6350.

In addition, it was discovered that it was possible to invoke scp with
certain options that may lead to the execution of arbitrary commands
(CVE-2007-6415 ).

This update removes Subversion, rsync and Unison support from the
scponly package, and prevents scp from being invoked with the
dangerous options."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=437148"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2007-6350"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2007-6415"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.debian.org/security/2008/dsa-1473"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the scponly package.

For the old stable distribution (sarge), these problems have been
fixed in version 4.0-1sarge2.

For the stable distribution (etch), these problems have been fixed in
version 4.6-1etch1."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:S/C:C/I:C/A:C");
  script_cwe_id(94, 264);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:scponly");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:3.1");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:4.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2008/01/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2008/01/27");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2008-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  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:"3.1", prefix:"scponly", reference:"4.0-1sarge2")) flag++;
if (deb_check(release:"4.0", prefix:"scponly", reference:"4.6-1etch1")) 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");