According to the version of the git packages installed, the EulerOS installation on the remote host is affected by the following vulnerability :
Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS 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.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(140878);
script_version("1.5");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/02/19");
script_cve_id("CVE-2020-5260");
script_name(english:"EulerOS 2.0 SP3 : git (EulerOS-SA-2020-2111)");
script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS host is missing a security update.");
script_set_attribute(attribute:"description", value:
"According to the version of the git packages installed, the EulerOS
installation on the remote host is affected by the following
vulnerability :
- Affected versions of Git have a vulnerability whereby
Git can be tricked into sending private credentials to
a host controlled by an attacker. Git uses external
'credential helper' programs to store and retrieve
passwords or other credentials from secure storage
provided by the operating system. Specially-crafted
URLs that contain an encoded newline can inject
unintended values into the credential helper protocol
stream, causing the credential helper to retrieve the
password for one server (e.g., good.example.com) for an
HTTP request being made to another server (e.g.,
evil.example.com), resulting in credentials for the
former being sent to the latter. There are no
restrictions on the relationship between the two,
meaning that an attacker can craft a URL that will
present stored credentials for any host to a host of
their choosing. The vulnerability can be triggered by
feeding a malicious URL to git clone. However, the
affected URLs look rather suspicious the likely vector
would be through systems which automatically clone URLs
not visible to the user, such as Git submodules, or
package systems built around Git. The problem has been
patched in the versions published on April 14th, 2020,
going back to v2.17.x. Anyone wishing to backport the
change further can do so by applying commit 9a6bbee
(the full release includes extra checks for git fsck,
but that commit is sufficient to protect clients
against the vulnerability). The patched versions are:
2.17.4, 2.18.3, 2.19.4, 2.20.3, 2.21.2, 2.22.3, 2.23.2,
2.24.2, 2.25.3, 2.26.1.(CVE-2020-5260)
Note that Tenable Network Security has extracted the preceding
description block directly from the EulerOS security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.");
# https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2020-2111
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?98a40f42");
script_set_attribute(attribute:"solution", value:
"Update the affected git package.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-5260");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"patch_publication_date", value:"2020/09/28");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/09/28");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:git");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:perl-Git");
script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:2.0");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Huawei Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2020-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/sp");
script_exclude_keys("Host/EulerOS/uvp_version");
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/EulerOS/release");
if (isnull(release) || release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS");
if (release !~ "^EulerOS release 2\.0(\D|$)") audit(AUDIT_OS_NOT, "EulerOS 2.0");
sp = get_kb_item("Host/EulerOS/sp");
if (isnull(sp) || sp !~ "^(3)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP3");
uvp = get_kb_item("Host/EulerOS/uvp_version");
if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP3", "EulerOS UVP " + uvp);
if (!get_kb_item("Host/EulerOS/rpm-list")) 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$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_ARCH_NOT, "i686 / x86_64", cpu);
flag = 0;
pkgs = ["git-1.8.3.1-20.h4",
"perl-Git-1.8.3.1-20.h4"];
foreach (pkg in pkgs)
if (rpm_check(release:"EulerOS-2.0", sp:"3", reference:pkg)) flag++;
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : rpm_report_get()
);
exit(0);
}
else
{
tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "git");
}