CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
EPSS
Percentile
94.8%
The remote host is affected by the vulnerability described in GLSA-201006-12 (Fetchmail: Multiple vulnerabilities)
Multiple vulnerabilities have been reported in Fetchmail:
The sdump() function might trigger a heap-based buffer overflow during the escaping of non-printable characters with the high bit set from an X.509 certificate (CVE-2010-0562).
The vendor reported that Fetchmail does not properly handle Common Name (CN) fields in X.509 certificates that contain an ASCII NUL character. Specifically, the processing of such fields is stopped at the first occurrence of a NUL character. This type of vulnerability was recently discovered by Dan Kaminsky and Moxie Marlinspike (CVE-2009-2666).
Impact :
A remote attacker could entice a user to connect with Fetchmail to a specially crafted SSL-enabled server in verbose mode, possibly resulting in the execution of arbitrary code with the privileges of the user running the application. NOTE: The issue is only existent on platforms on which char is signed.
Furthermore, a remote attacker might employ a specially crafted X.509 certificate, containing a NUL character in the Common Name field to conduct man-in-the-middle attacks on SSL connections made using Fetchmail.
Workaround :
There is no known workaround at this time.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Gentoo Linux Security Advisory GLSA 201006-12.
#
# The advisory text is Copyright (C) 2001-2016 Gentoo Foundation, Inc.
# and licensed under the Creative Commons - Attribution / Share Alike
# license. See http://creativecommons.org/licenses/by-sa/3.0/
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(46779);
script_version("1.12");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");
script_cve_id("CVE-2009-2666", "CVE-2010-0562");
script_bugtraq_id(38088);
script_xref(name:"GLSA", value:"201006-12");
script_name(english:"GLSA-201006-12 : Fetchmail: Multiple vulnerabilities");
script_summary(english:"Checks for updated package(s) in /var/db/pkg");
script_set_attribute(
attribute:"synopsis",
value:
"The remote Gentoo host is missing one or more security-related
patches."
);
script_set_attribute(
attribute:"description",
value:
"The remote host is affected by the vulnerability described in GLSA-201006-12
(Fetchmail: Multiple vulnerabilities)
Multiple vulnerabilities have been reported in Fetchmail:
The sdump() function might trigger a heap-based buffer overflow
during the escaping of non-printable characters with the high bit set
from an X.509 certificate (CVE-2010-0562).
The vendor reported
that Fetchmail does not properly handle Common Name (CN) fields in
X.509 certificates that contain an ASCII NUL character. Specifically,
the processing of such fields is stopped at the first occurrence of a
NUL character. This type of vulnerability was recently discovered by
Dan Kaminsky and Moxie Marlinspike (CVE-2009-2666).
Impact :
A remote attacker could entice a user to connect with Fetchmail to a
specially crafted SSL-enabled server in verbose mode, possibly
resulting in the execution of arbitrary code with the privileges of the
user running the application. NOTE: The issue is only existent on
platforms on which char is signed.
Furthermore, a remote attacker might employ a specially crafted X.509
certificate, containing a NUL character in the Common Name field to
conduct man-in-the-middle attacks on SSL connections made using
Fetchmail.
Workaround :
There is no known workaround at this time."
);
script_set_attribute(
attribute:"see_also",
value:"https://security.gentoo.org/glsa/201006-12"
);
script_set_attribute(
attribute:"solution",
value:
"All Fetchmail users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=net-mail/fetchmail-6.3.14'"
);
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/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(119, 310);
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:fetchmail");
script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");
script_set_attribute(attribute:"patch_publication_date", value:"2010/06/01");
script_set_attribute(attribute:"plugin_publication_date", value:"2010/06/02");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2010-2021 Tenable Network Security, Inc.");
script_family(english:"Gentoo Local Security Checks");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/Gentoo/release", "Host/Gentoo/qpkg-list");
exit(0);
}
include("audit.inc");
include("global_settings.inc");
include("qpkg.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Gentoo/release")) audit(AUDIT_OS_NOT, "Gentoo");
if (!get_kb_item("Host/Gentoo/qpkg-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
flag = 0;
if (qpkg_check(package:"net-mail/fetchmail", unaffected:make_list("ge 6.3.14"), vulnerable:make_list("lt 6.3.14"))) flag++;
if (flag)
{
if (report_verbosity > 0) security_warning(port:0, extra:qpkg_report_get());
else security_warning(0);
exit(0);
}
else
{
tested = qpkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "Fetchmail");
}