8.8 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:N/I:C/A:C
8.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
9.3 High
AI Score
Confidence
High
0.006 Low
EPSS
Percentile
78.6%
Several vulnerabilities have been discovered in rubygems embedded in ruby2.1, the interpreted scripting language.
CVE-2019-8320
A Directory Traversal issue was discovered in RubyGems. Before making new directories or touching files (which now include path-checking code for symlinks), it would delete the target destination.
CVE-2019-8322
The gem owner command outputs the contents of the API response directly to stdout. Therefore, if the response is crafted, escape sequence injection may occur.
CVE-2019-8323
Gem::GemcutterUtilities#with_response may output the API response to stdout as it is. Therefore, if the API side modifies the response, escape sequence injection may occur.
CVE-2019-8324
A crafted gem with a multi-line name is not handled correctly.
Therefore, an attacker could inject arbitrary code to the stub line of gemspec, which is eval-ed by code in ensure_loadable_spec during the preinstall check.
CVE-2019-8325
An issue was discovered in RubyGems 2.6 and later through 3.0.2. Since Gem::CommandManager#run calls alert_error without escaping, escape sequence injection is possible. (There are many ways to cause an error.)
For Debian 8 ‘Jessie’, these problems have been fixed in version 2.1.5-2+deb8u7.
We recommend that you upgrade your ruby2.1 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-1735-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(123522);
script_version("1.7");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/07");
script_cve_id(
"CVE-2019-8320",
"CVE-2019-8322",
"CVE-2019-8323",
"CVE-2019-8324",
"CVE-2019-8325"
);
script_name(english:"Debian DLA-1735-1 : ruby2.1 security update");
script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security update.");
script_set_attribute(attribute:"description", value:
"Several vulnerabilities have been discovered in rubygems embedded in
ruby2.1, the interpreted scripting language.
CVE-2019-8320
A Directory Traversal issue was discovered in RubyGems. Before making
new directories or touching files (which now include path-checking
code for symlinks), it would delete the target destination.
CVE-2019-8322
The gem owner command outputs the contents of the API response
directly to stdout. Therefore, if the response is crafted, escape
sequence injection may occur.
CVE-2019-8323
Gem::GemcutterUtilities#with_response may output the API response to
stdout as it is. Therefore, if the API side modifies the response,
escape sequence injection may occur.
CVE-2019-8324
A crafted gem with a multi-line name is not handled correctly.
Therefore, an attacker could inject arbitrary code to the stub line of
gemspec, which is eval-ed by code in ensure_loadable_spec during the
preinstall check.
CVE-2019-8325
An issue was discovered in RubyGems 2.6 and later through 3.0.2. Since
Gem::CommandManager#run calls alert_error without escaping, escape
sequence injection is possible. (There are many ways to cause an
error.)
For Debian 8 'Jessie', these problems have been fixed in version
2.1.5-2+deb8u7.
We recommend that you upgrade your ruby2.1 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/2019/03/msg00037.html");
script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/jessie/ruby2.1");
script_set_attribute(attribute:"solution", value:
"Upgrade the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:C/A:C");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-8320");
script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2019-8324");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2019/06/06");
script_set_attribute(attribute:"patch_publication_date", value:"2019/03/29");
script_set_attribute(attribute:"plugin_publication_date", value:"2019/04/01");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libruby2.1");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ruby2.1");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ruby2.1-dev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ruby2.1-doc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ruby2.1-tcltk");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:8.0");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Debian Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2019-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
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:"8.0", prefix:"libruby2.1", reference:"2.1.5-2+deb8u7")) flag++;
if (deb_check(release:"8.0", prefix:"ruby2.1", reference:"2.1.5-2+deb8u7")) flag++;
if (deb_check(release:"8.0", prefix:"ruby2.1-dev", reference:"2.1.5-2+deb8u7")) flag++;
if (deb_check(release:"8.0", prefix:"ruby2.1-doc", reference:"2.1.5-2+deb8u7")) flag++;
if (deb_check(release:"8.0", prefix:"ruby2.1-tcltk", reference:"2.1.5-2+deb8u7")) 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");
Vendor | Product | Version | CPE |
---|---|---|---|
debian | debian_linux | ruby2.1 | p-cpe:/a:debian:debian_linux:ruby2.1 |
debian | debian_linux | libruby2.1 | p-cpe:/a:debian:debian_linux:libruby2.1 |
debian | debian_linux | ruby2.1-doc | p-cpe:/a:debian:debian_linux:ruby2.1-doc |
debian | debian_linux | ruby2.1-tcltk | p-cpe:/a:debian:debian_linux:ruby2.1-tcltk |
debian | debian_linux | 8.0 | cpe:/o:debian:debian_linux:8.0 |
debian | debian_linux | ruby2.1-dev | p-cpe:/a:debian:debian_linux:ruby2.1-dev |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-8320
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-8322
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-8323
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-8324
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-8325
lists.debian.org/debian-lts-announce/2019/03/msg00037.html
packages.debian.org/source/jessie/ruby2.1
8.8 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:N/I:C/A:C
8.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
9.3 High
AI Score
Confidence
High
0.006 Low
EPSS
Percentile
78.6%