5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.067 Low
EPSS
Percentile
93.9%
There is a potential denial of service vulnerability in Rack, a modular Ruby webserver interface.
Carefully crafted requests can cause a SystemStackError
and cause a denial of service attack by exploiting the lack of a sensible depth check when doing parameter normalization.
We recommend that you update your librack-ruby packages.
NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA 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 Debian Security Advisory DLA-254-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(84408);
script_version("2.8");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/11");
script_cve_id("CVE-2015-3225");
script_bugtraq_id(75232);
script_name(english:"Debian DLA-254-1 : librack-ruby security update");
script_summary(english:"Checks dpkg output for the updated packages.");
script_set_attribute(
attribute:"synopsis",
value:"The remote Debian host is missing a security update."
);
script_set_attribute(
attribute:"description",
value:
"There is a potential denial of service vulnerability in Rack, a
modular Ruby webserver interface.
Carefully crafted requests can cause a `SystemStackError` and cause a
denial of service attack by exploiting the lack of a sensible depth
check when doing parameter normalization.
We recommend that you update your librack-ruby packages.
NOTE: Tenable Network Security has extracted the preceding description
block directly from the DLA 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://lists.debian.org/debian-lts-announce/2015/06/msg00021.html"
);
script_set_attribute(
attribute:"see_also",
value:"https://packages.debian.org/source/squeeze-lts/librack-ruby"
);
script_set_attribute(attribute:"solution", value:"Upgrade the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:librack-ruby");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:librack-ruby1.8");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:librack-ruby1.9.1");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:6.0");
script_set_attribute(attribute:"patch_publication_date", value:"2015/06/26");
script_set_attribute(attribute:"plugin_publication_date", value:"2015/06/26");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2015-2021 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:"6.0", prefix:"librack-ruby", reference:"1.1.0-4+squeeze3")) flag++;
if (deb_check(release:"6.0", prefix:"librack-ruby1.8", reference:"1.1.0-4+squeeze3")) flag++;
if (deb_check(release:"6.0", prefix:"librack-ruby1.9.1", reference:"1.1.0-4+squeeze3")) flag++;
if (flag)
{
if (report_verbosity > 0) security_warning(port:0, extra:deb_report_get());
else security_warning(0);
exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");
Vendor | Product | Version | CPE |
---|---|---|---|
debian | debian_linux | librack-ruby | p-cpe:/a:debian:debian_linux:librack-ruby |
debian | debian_linux | librack-ruby1.8 | p-cpe:/a:debian:debian_linux:librack-ruby1.8 |
debian | debian_linux | librack-ruby1.9.1 | p-cpe:/a:debian:debian_linux:librack-ruby1.9.1 |
debian | debian_linux | 6.0 | cpe:/o:debian:debian_linux:6.0 |