Vulnerabilities > CVE-2007-0844 - Unspecified vulnerability in PAM SSH PAM SSH 1.91

047910
CVSS 0.0 - NONE
Attack vector
UNKNOWN
Attack complexity
UNKNOWN
Privileges required
UNKNOWN
Confidentiality impact
UNKNOWN
Integrity impact
UNKNOWN
Availability impact
UNKNOWN
pam-ssh
nessus

Summary

The auth_via_key function in pam_ssh.c in pam_ssh before 1.92, when the allow_blank_passphrase option is disabled, allows remote attackers to bypass authentication restrictions and use private encryption keys requiring a blank passphrase by entering a non-blank passphrase.

Vulnerable Configurations

Part Description Count
Application
Pam_Ssh
1

Nessus

NASL familyFedora Local Security Checks
NASL idFEDORA_2007-1793.NASL
description - Thu Aug 23 2007 Patrice Dumas <pertusus at free.fr> 1.92-2 - update to 1.92 - Fix #253959, CVE-2007-0844 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
last seen2020-06-01
modified2020-06-02
plugin id27735
published2007-11-06
reporterThis script is Copyright (C) 2007-2019 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/27735
titleFedora 7 : pam_ssh-1.92-2.fc7 (2007-1793)
code
#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Fedora Security Advisory 2007-1793.
#

include("compat.inc");

if (description)
{
  script_id(27735);
  script_version ("1.12");
  script_cvs_date("Date: 2019/08/02 13:32:25");

  script_cve_id("CVE-2007-0844");
  script_xref(name:"FEDORA", value:"2007-1793");

  script_name(english:"Fedora 7 : pam_ssh-1.92-2.fc7 (2007-1793)");
  script_summary(english:"Checks rpm output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Fedora host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"  - Thu Aug 23 2007 Patrice Dumas <pertusus at free.fr>
    1.92-2

    - update to 1.92

    - Fix #253959, CVE-2007-0844

Note that Tenable Network Security has extracted the preceding
description block directly from the Fedora security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues."
  );
  # https://lists.fedoraproject.org/pipermail/package-announce/2007-August/003407.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?80958920"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected pam_ssh and / or pam_ssh-debuginfo packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:pam_ssh");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:pam_ssh-debuginfo");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:7");

  script_set_attribute(attribute:"patch_publication_date", value:"2007/08/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2007/11/06");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2007-2019 Tenable Network Security, Inc.");
  script_family(english:"Fedora Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/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);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora");
os_ver = eregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
os_ver = os_ver[1];
if (! ereg(pattern:"^7([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 7.x", "Fedora " + os_ver);

if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu);

flag = 0;
if (rpm_check(release:"FC7", reference:"pam_ssh-1.92-2.fc7")) flag++;
if (rpm_check(release:"FC7", reference:"pam_ssh-debuginfo-1.92-2.fc7")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "pam_ssh / pam_ssh-debuginfo");
}