Recently, Trustix Secure Linux discovered some vulnerabilities in the libc6 package. The utilities ‘catchsegv’ and ‘glibcbug’ created temporary files in an insecure way, which allowed a symlink attack to create or overwrite arbitrary files with the privileges of the user invoking the program.
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-4-1. 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(20656);
script_version("1.15");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/19");
script_cve_id("CVE-2004-0968");
script_xref(name:"USN", value:"4-1");
script_name(english:"Ubuntu 4.10 : Standard C library script vulnerabilities (USN-4-1)");
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:
"Recently, Trustix Secure Linux discovered some vulnerabilities in the
libc6 package. The utilities 'catchsegv' and 'glibcbug' created
temporary files in an insecure way, which allowed a symlink attack to
create or overwrite arbitrary files with the privileges of the user
invoking the program.
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:"solution", value:"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:N/I:P/A:N");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:glibc-doc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libc6");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libc6-dbg");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libc6-dev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libc6-i686");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libc6-pic");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libc6-prof");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:locales");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:nscd");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:4.10");
script_set_attribute(attribute:"patch_publication_date", value:"2004/10/28");
script_set_attribute(attribute:"plugin_publication_date", value:"2006/01/15");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"Ubuntu Security Notice (C) 2004-2019 Canonical, Inc. / NASL script (C) 2006-2016 Tenable Network Security, Inc.");
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:"^(4\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 4.10", "Ubuntu " + release);
if ( ! get_kb_item("Host/Debian/dpkg-l") ) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Ubuntu", cpu);
flag = 0;
if (ubuntu_check(osver:"4.10", pkgname:"glibc-doc", pkgver:"2.3.2.ds1-13ubuntu2.2")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libc6", pkgver:"2.3.2.ds1-13ubuntu2.2")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libc6-dbg", pkgver:"2.3.2.ds1-13ubuntu2.2")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libc6-dev", pkgver:"2.3.2.ds1-13ubuntu2.2")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libc6-i686", pkgver:"2.3.2.ds1-13ubuntu2.2")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libc6-pic", pkgver:"2.3.2.ds1-13ubuntu2.2")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libc6-prof", pkgver:"2.3.2.ds1-13ubuntu2.2")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"locales", pkgver:"2.3.2.ds1-13ubuntu2.2")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"nscd", pkgver:"2.3.2.ds1-13ubuntu2.2")) flag++;
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_NOTE,
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, "glibc-doc / libc6 / libc6-dbg / libc6-dev / libc6-i686 / libc6-pic / etc");
}
Vendor | Product | Version | CPE |
---|---|---|---|
canonical | ubuntu_linux | glibc-doc | p-cpe:/a:canonical:ubuntu_linux:glibc-doc |
canonical | ubuntu_linux | libc6 | p-cpe:/a:canonical:ubuntu_linux:libc6 |
canonical | ubuntu_linux | libc6-dbg | p-cpe:/a:canonical:ubuntu_linux:libc6-dbg |
canonical | ubuntu_linux | libc6-dev | p-cpe:/a:canonical:ubuntu_linux:libc6-dev |
canonical | ubuntu_linux | libc6-i686 | p-cpe:/a:canonical:ubuntu_linux:libc6-i686 |
canonical | ubuntu_linux | libc6-pic | p-cpe:/a:canonical:ubuntu_linux:libc6-pic |
canonical | ubuntu_linux | libc6-prof | p-cpe:/a:canonical:ubuntu_linux:libc6-prof |
canonical | ubuntu_linux | locales | p-cpe:/a:canonical:ubuntu_linux:locales |
canonical | ubuntu_linux | nscd | p-cpe:/a:canonical:ubuntu_linux:nscd |
canonical | ubuntu_linux | 4.10 | cpe:/o:canonical:ubuntu_linux:4.10 |