7.8 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
COMPLETE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:N/I:C/A:N
0.294 Low
EPSS
Percentile
96.9%
Gerardo Richarte from Core Security Technologies discovered that when gnupg is used without --status-fd, there is no way to distinguish initial unsigned messages from a following signed message. An attacker could inject an unsigned message, which could fool the user into thinking the message was entirely signed by the original sender.
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-432-1. 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(28026);
script_version("1.16");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/19");
script_cve_id("CVE-2007-1263", "CVE-2007-1264", "CVE-2007-1265", "CVE-2007-1266", "CVE-2007-1267", "CVE-2007-1268", "CVE-2007-1269");
script_bugtraq_id(22757);
script_xref(name:"USN", value:"432-1");
script_name(english:"Ubuntu 5.10 / 6.06 LTS / 6.10 : gnupg vulnerability (USN-432-1)");
script_summary(english:"Checks dpkg output for updated package.");
script_set_attribute(
attribute:"synopsis",
value:"The remote Ubuntu host is missing a security-related patch."
);
script_set_attribute(
attribute:"description",
value:
"Gerardo Richarte from Core Security Technologies discovered that when
gnupg is used without --status-fd, there is no way to distinguish
initial unsigned messages from a following signed message. An attacker
could inject an unsigned message, which could fool the user into
thinking the message was entirely signed by the original sender.
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/432-1/"
);
script_set_attribute(attribute:"solution", value:"Update the affected gnupg package.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:C/A:N");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gnupg");
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:"cpe", value:"cpe:/o:canonical:ubuntu_linux:6.10");
script_set_attribute(attribute:"patch_publication_date", value:"2007/03/08");
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\.10|6\.06|6\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 5.10 / 6.06 / 6.10", "Ubuntu " + release);
if ( ! get_kb_item("Host/Debian/dpkg-l") ) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Ubuntu", cpu);
flag = 0;
if (ubuntu_check(osver:"5.10", pkgname:"gnupg", pkgver:"1.4.1-1ubuntu1.7")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"gnupg", pkgver:"1.4.2.2-1ubuntu2.5")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"gnupg", pkgver:"1.4.3-2ubuntu3.3")) flag++;
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
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, "gnupg");
}
Vendor | Product | Version | CPE |
---|---|---|---|
canonical | ubuntu_linux | gnupg | p-cpe:/a:canonical:ubuntu_linux:gnupg |
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 | 6.10 | cpe:/o:canonical:ubuntu_linux:6.10 |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1263
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1264
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1265
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1266
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1267
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1268
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1269
usn.ubuntu.com/432-1/