4.3 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:N/I:N/A:P
0.024 Low
EPSS
Percentile
89.8%
Fixed NULL dereference leads to denial of service - CVE-2013-0176, several NULL pointer dereferences in SSHv1, a free crash bug in options parsing.
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.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Fedora Security Advisory 2013-1422.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(64416);
script_version("1.9");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/11");
script_cve_id("CVE-2013-0176");
script_xref(name:"FEDORA", value:"2013-1422");
script_name(english:"Fedora 17 : libssh-0.5.4-1.fc17 (2013-1422)");
script_summary(english:"Checks rpm output for the updated package.");
script_set_attribute(
attribute:"synopsis",
value:"The remote Fedora host is missing a security update."
);
script_set_attribute(
attribute:"description",
value:
"Fixed NULL dereference leads to denial of service - CVE-2013-0176,
several NULL pointer dereferences in SSHv1, a free crash bug in
options parsing.
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."
);
script_set_attribute(
attribute:"see_also",
value:"https://bugzilla.redhat.com/show_bug.cgi?id=894407"
);
# https://lists.fedoraproject.org/pipermail/package-announce/2013-February/098065.html
script_set_attribute(
attribute:"see_also",
value:"http://www.nessus.org/u?88ff6d65"
);
script_set_attribute(
attribute:"solution",
value:"Update the affected libssh package."
);
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/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:fedoraproject:fedora:libssh");
script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:17");
script_set_attribute(attribute:"patch_publication_date", value:"2013/01/24");
script_set_attribute(attribute:"plugin_publication_date", value:"2013/02/04");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2013-2021 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:"^17([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 17.x", "Fedora " + os_ver);
if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu);
flag = 0;
if (rpm_check(release:"FC17", reference:"libssh-0.5.4-1.fc17")) 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, "libssh");
}
Vendor | Product | Version | CPE |
---|---|---|---|
fedoraproject | fedora | libssh | p-cpe:/a:fedoraproject:fedora:libssh |
fedoraproject | fedora | 17 | cpe:/o:fedoraproject:fedora:17 |