5.8 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:N/I:P/A:P
0.093 Low
EPSS
Percentile
94.7%
Philip Mackenzie, Marius Schilder, Jason Waddle and Ben Laurie of Google Security discovered that the OpenSSL library did not sufficiently check the padding of PKCS #1 v1.5 signatures if the exponent of the public key is 3 (which is widely used for CAs). This could be exploited to forge signatures without the need of the secret key.
Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu 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 Ubuntu Security Notice USN-339-1. The text
# itself is copyright (C) Canonical, Inc. See
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(27918);
script_version("1.17");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/19");
script_cve_id("CVE-2006-4339", "CVE-2006-5201", "CVE-2006-7140");
script_xref(name:"USN", value:"339-1");
script_name(english:"Ubuntu 5.04 / 5.10 / 6.06 LTS : openssl vulnerability (USN-339-1)");
script_summary(english:"Checks dpkg output for updated packages.");
script_set_attribute(
attribute:"synopsis",
value:
"The remote Ubuntu host is missing one or more security-related
patches."
);
script_set_attribute(
attribute:"description",
value:
"Philip Mackenzie, Marius Schilder, Jason Waddle and Ben Laurie of
Google Security discovered that the OpenSSL library did not
sufficiently check the padding of PKCS #1 v1.5 signatures if the
exponent of the public key is 3 (which is widely used for CAs). This
could be exploited to forge signatures without the need of the secret
key.
Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu 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://usn.ubuntu.com/339-1/"
);
script_set_attribute(attribute:"solution", value:"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:P/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_cwe_id(310);
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libssl-dev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libssl0.9.7");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libssl0.9.8");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libssl0.9.8-dbg");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openssl");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:5.04");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:5.10");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:6.06:-:lts");
script_set_attribute(attribute:"patch_publication_date", value:"2006/09/05");
script_set_attribute(attribute:"plugin_publication_date", value:"2007/11/10");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"Ubuntu Security Notice (C) 2007-2019 Canonical, Inc. / NASL script (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_family(english:"Ubuntu Local Security Checks");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");
exit(0);
}
include("audit.inc");
include("ubuntu.inc");
include("misc_func.inc");
if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/Ubuntu/release");
if ( isnull(release) ) audit(AUDIT_OS_NOT, "Ubuntu");
release = chomp(release);
if (! ereg(pattern:"^(5\.04|5\.10|6\.06)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 5.04 / 5.10 / 6.06", "Ubuntu " + release);
if ( ! get_kb_item("Host/Debian/dpkg-l") ) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Ubuntu", cpu);
flag = 0;
if (ubuntu_check(osver:"5.04", pkgname:"libssl-dev", pkgver:"0.9.7e-3ubuntu0.3")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"libssl0.9.7", pkgver:"0.9.7e-3ubuntu0.3")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"openssl", pkgver:"0.9.7e-3ubuntu0.3")) flag++;
if (ubuntu_check(osver:"5.10", pkgname:"libssl-dev", pkgver:"0.9.7g-1ubuntu1.2")) flag++;
if (ubuntu_check(osver:"5.10", pkgname:"libssl0.9.7", pkgver:"0.9.7g-1ubuntu1.2")) flag++;
if (ubuntu_check(osver:"5.10", pkgname:"openssl", pkgver:"0.9.7g-1ubuntu1.2")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"libssl-dev", pkgver:"0.9.8a-7ubuntu0.1")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"libssl0.9.8", pkgver:"0.9.8a-7ubuntu0.1")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"libssl0.9.8-dbg", pkgver:"0.9.8a-7ubuntu0.1")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"openssl", pkgver:"0.9.8a-7ubuntu0.1")) flag++;
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : ubuntu_report_get()
);
exit(0);
}
else
{
tested = ubuntu_pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "libssl-dev / libssl0.9.7 / libssl0.9.8 / libssl0.9.8-dbg / openssl");
}
Vendor | Product | Version | CPE |
---|---|---|---|
canonical | ubuntu_linux | 5.04 | cpe:/o:canonical:ubuntu_linux:5.04 |
canonical | ubuntu_linux | libssl0.9.8-dbg | p-cpe:/a:canonical:ubuntu_linux:libssl0.9.8-dbg |
canonical | ubuntu_linux | libssl0.9.8 | p-cpe:/a:canonical:ubuntu_linux:libssl0.9.8 |
canonical | ubuntu_linux | openssl | p-cpe:/a:canonical:ubuntu_linux:openssl |
canonical | ubuntu_linux | libssl0.9.7 | p-cpe:/a:canonical:ubuntu_linux:libssl0.9.7 |
canonical | ubuntu_linux | 5.10 | cpe:/o:canonical:ubuntu_linux:5.10 |
canonical | ubuntu_linux | 6.06 | cpe:/o:canonical:ubuntu_linux:6.06:-:lts |
canonical | ubuntu_linux | libssl-dev | p-cpe:/a:canonical:ubuntu_linux:libssl-dev |