CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
86.6%
Multiple vulnerabilities were found in the interpreter for the Ruby language. The Common Vulnerabilities and Exposures project identifies the following issues :
CVE-2017-17742
Aaron Patterson reported that WEBrick bundled with Ruby was vulnerable to an HTTP response splitting vulnerability. It was possible for an attacker to inject fake HTTP responses if a script accepted an external input and output it without modifications.
CVE-2018-6914
ooooooo_q discovered a directory traversal vulnerability in the Dir.mktmpdir method in the tmpdir library. It made it possible for attackers to create arbitrary directories or files via a … (dot dot) in the prefix argument.
CVE-2018-8777
Eric Wong reported an out-of-memory DoS vulnerability related to a large request in WEBrick bundled with Ruby.
CVE-2018-8778
aerodudrizzt found a buffer under-read vulnerability in the Ruby String#unpack method. If a big number was passed with the specifier @, the number was treated as a negative value, and an out-of-buffer read occurred. Attackers could read data on heaps if an script accepts an external input as the argument of String#unpack.
CVE-2018-8779
ooooooo_q reported that the UNIXServer.open and UNIXSocket.open methods of the socket library bundled with Ruby did not check for NUL bytes in the path argument. The lack of check made the methods vulnerable to unintentional socket creation and unintentional socket access.
CVE-2018-8780
ooooooo_q discovered an unintentional directory traversal in some methods in Dir, by the lack of checking for NUL bytes in their parameter.
CVE-2018-1000075
A negative size vulnerability in ruby gem package tar header that could cause an infinite loop.
CVE-2018-1000076
Ruby gems package improperly verifies cryptographic signatures. A mis-signed gem could be installed if the tarball contains multiple gem signatures.
CVE-2018-1000077
An improper input validation vulnerability in ruby gems specification homepage attribute could allow malicious gem to set an invalid homepage URL.
CVE-2018-1000078
Cross Site Scripting (XSS) vulnerability in gem server display of homepage attribute
For Debian 7 ‘Wheezy’, these problems have been fixed in version 1.9.3.194-8.1+deb7u8.
We recommend that you upgrade your ruby1.9.1 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-1358-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(109283);
script_version("1.4");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/11");
script_cve_id("CVE-2017-17742", "CVE-2018-1000075", "CVE-2018-1000076", "CVE-2018-1000077", "CVE-2018-1000078", "CVE-2018-6914", "CVE-2018-8777", "CVE-2018-8778", "CVE-2018-8779", "CVE-2018-8780");
script_name(english:"Debian DLA-1358-1 : ruby1.9.1 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:
"Multiple vulnerabilities were found in the interpreter for the Ruby
language. The Common Vulnerabilities and Exposures project identifies
the following issues :
CVE-2017-17742
Aaron Patterson reported that WEBrick bundled with Ruby was vulnerable
to an HTTP response splitting vulnerability. It was possible for an
attacker to inject fake HTTP responses if a script accepted an
external input and output it without modifications.
CVE-2018-6914
ooooooo_q discovered a directory traversal vulnerability in the
Dir.mktmpdir method in the tmpdir library. It made it possible for
attackers to create arbitrary directories or files via a .. (dot dot)
in the prefix argument.
CVE-2018-8777
Eric Wong reported an out-of-memory DoS vulnerability related to a
large request in WEBrick bundled with Ruby.
CVE-2018-8778
aerodudrizzt found a buffer under-read vulnerability in the Ruby
String#unpack method. If a big number was passed with the specifier @,
the number was treated as a negative value, and an out-of-buffer read
occurred. Attackers could read data on heaps if an script accepts an
external input as the argument of String#unpack.
CVE-2018-8779
ooooooo_q reported that the UNIXServer.open and UNIXSocket.open
methods of the socket library bundled with Ruby did not check for NUL
bytes in the path argument. The lack of check made the methods
vulnerable to unintentional socket creation and unintentional socket
access.
CVE-2018-8780
ooooooo_q discovered an unintentional directory traversal in some
methods in Dir, by the lack of checking for NUL bytes in their
parameter.
CVE-2018-1000075
A negative size vulnerability in ruby gem package tar header that
could cause an infinite loop.
CVE-2018-1000076
Ruby gems package improperly verifies cryptographic signatures. A
mis-signed gem could be installed if the tarball contains multiple gem
signatures.
CVE-2018-1000077
An improper input validation vulnerability in ruby gems specification
homepage attribute could allow malicious gem to set an invalid
homepage URL.
CVE-2018-1000078
Cross Site Scripting (XSS) vulnerability in gem server display of
homepage attribute
For Debian 7 'Wheezy', these problems have been fixed in version
1.9.3.194-8.1+deb7u8.
We recommend that you upgrade your ruby1.9.1 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/2018/04/msg00023.html"
);
script_set_attribute(
attribute:"see_also",
value:"https://packages.debian.org/source/wheezy/ruby1.9.1"
);
script_set_attribute(attribute:"solution", value:"Upgrade the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libruby1.9.1");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libruby1.9.1-dbg");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libtcltk-ruby1.9.1");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ri1.9.1");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ruby1.9.1");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ruby1.9.1-dev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ruby1.9.1-examples");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ruby1.9.1-full");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ruby1.9.3");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:7.0");
script_set_attribute(attribute:"patch_publication_date", value:"2018/04/23");
script_set_attribute(attribute:"plugin_publication_date", value:"2018/04/24");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2018-2021 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:"7.0", prefix:"libruby1.9.1", reference:"1.9.3.194-8.1+deb7u8")) flag++;
if (deb_check(release:"7.0", prefix:"libruby1.9.1-dbg", reference:"1.9.3.194-8.1+deb7u8")) flag++;
if (deb_check(release:"7.0", prefix:"libtcltk-ruby1.9.1", reference:"1.9.3.194-8.1+deb7u8")) flag++;
if (deb_check(release:"7.0", prefix:"ri1.9.1", reference:"1.9.3.194-8.1+deb7u8")) flag++;
if (deb_check(release:"7.0", prefix:"ruby1.9.1", reference:"1.9.3.194-8.1+deb7u8")) flag++;
if (deb_check(release:"7.0", prefix:"ruby1.9.1-dev", reference:"1.9.3.194-8.1+deb7u8")) flag++;
if (deb_check(release:"7.0", prefix:"ruby1.9.1-examples", reference:"1.9.3.194-8.1+deb7u8")) flag++;
if (deb_check(release:"7.0", prefix:"ruby1.9.1-full", reference:"1.9.3.194-8.1+deb7u8")) flag++;
if (deb_check(release:"7.0", prefix:"ruby1.9.3", reference:"1.9.3.194-8.1+deb7u8")) 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");
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-17742
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1000075
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1000076
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1000077
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1000078
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6914
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-8777
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-8778
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-8779
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-8780
lists.debian.org/debian-lts-announce/2018/04/msg00023.html
packages.debian.org/source/wheezy/ruby1.9.1
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
86.6%