| code | #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux AMI Security Advisory ALAS-2019-1325.
#
include("compat.inc");
if (description)
{
script_id(132026);
script_version("1.4");
script_cvs_date("Date: 2020/01/30");
script_cve_id("CVE-2019-1348", "CVE-2019-1349", "CVE-2019-1350", "CVE-2019-1351", "CVE-2019-1352", "CVE-2019-1353", "CVE-2019-1354", "CVE-2019-1387");
script_xref(name:"ALAS", value:"2019-1325");
script_name(english:"Amazon Linux AMI : git (ALAS-2019-1325)");
script_summary(english:"Checks rpm output for the updated packages");
script_set_attribute(
attribute:"synopsis",
value:"The remote Amazon Linux AMI host is missing a security update."
);
script_set_attribute(
attribute:"description",
value:
"The --export-marks option of git fast-import is exposed also via the
in-stream command feature export-marks=... and it allows overwriting
arbitrary paths.(CVE-2019-1348)
When submodules are cloned recursively, under certain circumstances
Git could be fooled into using the same Git directory twice. We now
require the directory to be empty.(CVE-2019-1349)
Incorrect quoting of command-line arguments allowed remote code
execution during a recursive clone in conjunction with SSH URLs.
(CVE-2019-1350)
While the only permitted drive letters for physical drives on Windows
are letters of the US-English alphabet, this restriction does not
apply to virtual drives . Git mistook such paths for relative paths,
allowing writing outside of the worktree while cloning.
(CVE-2019-13510)
Git was unaware of NTFS Alternate Data Streams, allowing files inside
the .git/ directory to be overwritten during a clone.(CVE-2019-1352)
When running Git in the Windows Subsystem for Linux (also known as
'WSL') while accessing a working directory on a regular Windows drive,
none of the NTFS protections were active. (CVE-2019-1353)
Filenames on Linux/Unix can contain backslashes. On Windows,
backslashes are directory separators. Git did not use to refuse to
write out tracked files with such filenames.(CVE-2019-1354)
Recursive clones are currently affected by a vulnerability that is
caused by too-lax validation of submodule names, allowing very
targeted attacks via remote code execution in recursive
clones.(CVE-2019-1387)"
);
script_set_attribute(
attribute:"see_also",
value:"https://alas.aws.amazon.com/ALAS-2019-1325.html"
);
script_set_attribute(
attribute:"solution",
value:"Run 'yum update git' to update your system."
);
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
script_set_cvss_temporal_vector("CVSS2#E:U/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:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-1354");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:emacs-git");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:emacs-git-el");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:git");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:git-all");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:git-bzr");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:git-cvs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:git-daemon");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:git-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:git-email");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:git-hg");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:git-p4");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:git-svn");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:gitweb");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:perl-Git");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:perl-Git-SVN");
script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux");
script_set_attribute(attribute:"vuln_publication_date", value:"2019/12/18");
script_set_attribute(attribute:"patch_publication_date", value:"2019/12/11");
script_set_attribute(attribute:"plugin_publication_date", value:"2019/12/13");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_family(english:"Amazon Linux Local Security Checks");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/AmazonLinux/release", "Host/AmazonLinux/rpm-list");
exit(0);
}
include("audit.inc");
include("global_settings.inc");
include("rpm.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/AmazonLinux/release");
if (isnull(release) || !strlen(release)) audit(AUDIT_OS_NOT, "Amazon Linux");
os_ver = pregmatch(pattern: "^AL(A|\d)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Amazon Linux");
os_ver = os_ver[1];
if (os_ver != "A")
{
if (os_ver == 'A') os_ver = 'AMI';
audit(AUDIT_OS_NOT, "Amazon Linux AMI", "Amazon Linux " + os_ver);
}
if (!get_kb_item("Host/AmazonLinux/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
flag = 0;
if (rpm_check(release:"ALA", reference:"emacs-git-2.14.6-1.61.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"emacs-git-el-2.14.6-1.61.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"git-2.14.6-1.61.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"git-all-2.14.6-1.61.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"git-bzr-2.14.6-1.61.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"git-cvs-2.14.6-1.61.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"git-daemon-2.14.6-1.61.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"git-debuginfo-2.14.6-1.61.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"git-email-2.14.6-1.61.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"git-hg-2.14.6-1.61.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"git-p4-2.14.6-1.61.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"git-svn-2.14.6-1.61.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"gitweb-2.14.6-1.61.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"perl-Git-2.14.6-1.61.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"perl-Git-SVN-2.14.6-1.61.amzn1")) flag++;
if (flag)
{
if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
else security_hole(0);
exit(0);
}
else
{
tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "emacs-git / emacs-git-el / git / git-all / git-bzr / git-cvs / etc");
}
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