The remote Ubuntu 22.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-5376-2 advisory.
C:\.git
, which would be picked up by Git operations run supposedly outside a repository while searching for a Git directory. Git would then respect any config in said Git directory. Git Bash users who set GIT_PS1_SHOWDIRTYSTATE
are vulnerable as well. Users who installed posh-gitare vulnerable simply by starting a PowerShell. Users of IDEs such as Visual Studio are vulnerable: simply creating a new project would already read and respect the config specified in C:\.git\config
. Users of the Microsoft fork of Git are vulnerable simply by starting a Git Bash. The problem has been patched in Git for Windows v2.35.2. Users unable to upgrade may create the folder .git
on all drives where Git commands are run, and remove read/write access from those folders as a workaround.GIT_CEILING_DIRECTORIES
to cover the parent directory of the user profile, e.g. C:\Users
if the user profile is located in C:\Users\my-user-name
. (CVE-2022-24765)Note that Nessus has not tested for this issue but has instead relied only on the application’s self-reported version number.
#%NASL_MIN_LEVEL 70300
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-5376-2. The text
# itself is copyright (C) Canonical, Inc. See
# <https://ubuntu.com/security/notices>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
##
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(160211);
script_version("1.4");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/07/10");
script_cve_id("CVE-2022-24765");
script_xref(name:"USN", value:"5376-2");
script_name(english:"Ubuntu 22.04 LTS : Git vulnerability (USN-5376-2)");
script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing a security update.");
script_set_attribute(attribute:"description", value:
"The remote Ubuntu 22.04 LTS host has packages installed that are affected by a vulnerability as referenced in the
USN-5376-2 advisory.
- Git for Windows is a fork of Git containing Windows-specific patches. This vulnerability affects users
working on multi-user machines, where untrusted parties have write access to the same hard disk. Those
untrusted parties could create the folder `C:\.git`, which would be picked up by Git operations run
supposedly outside a repository while searching for a Git directory. Git would then respect any config in
said Git directory. Git Bash users who set `GIT_PS1_SHOWDIRTYSTATE` are vulnerable as well. Users who
installed posh-gitare vulnerable simply by starting a PowerShell. Users of IDEs such as Visual Studio are
vulnerable: simply creating a new project would already read and respect the config specified in
`C:\.git\config`. Users of the Microsoft fork of Git are vulnerable simply by starting a Git Bash. The
problem has been patched in Git for Windows v2.35.2. Users unable to upgrade may create the folder `.git`
on all drives where Git commands are run, and remove read/write access from those folders as a workaround.
Alternatively, define or extend `GIT_CEILING_DIRECTORIES` to cover the _parent_ directory of the user
profile, e.g. `C:\Users` if the user profile is located in `C:\Users\my-user-name`. (CVE-2022-24765)
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/notices/USN-5376-2");
script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C");
script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2022-24765");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2022/04/12");
script_set_attribute(attribute:"patch_publication_date", value:"2022/04/25");
script_set_attribute(attribute:"plugin_publication_date", value:"2022/04/26");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:22.04:-:lts");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:git");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:git-all");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:git-cvs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:git-daemon-run");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:git-daemon-sysvinit");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:git-email");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:git-gui");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:git-man");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:git-mediawiki");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:git-svn");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gitk");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gitweb");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Ubuntu Local Security Checks");
script_copyright(english:"Ubuntu Security Notice (C) 2022-2023 Canonical, Inc. / NASL script (C) 2022-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");
exit(0);
}
include('debian_package.inc');
if ( ! get_kb_item('Host/local_checks_enabled') ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/Ubuntu/release');
if ( isnull(os_release) ) audit(AUDIT_OS_NOT, 'Ubuntu');
os_release = chomp(os_release);
if (! ('22.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 22.04', 'Ubuntu ' + os_release);
if ( ! get_kb_item('Host/Debian/dpkg-l') ) audit(AUDIT_PACKAGE_LIST_MISSING);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Ubuntu', cpu);
var pkgs = [
{'osver': '22.04', 'pkgname': 'git', 'pkgver': '1:2.34.1-1ubuntu1.1'},
{'osver': '22.04', 'pkgname': 'git-all', 'pkgver': '1:2.34.1-1ubuntu1.1'},
{'osver': '22.04', 'pkgname': 'git-cvs', 'pkgver': '1:2.34.1-1ubuntu1.1'},
{'osver': '22.04', 'pkgname': 'git-daemon-run', 'pkgver': '1:2.34.1-1ubuntu1.1'},
{'osver': '22.04', 'pkgname': 'git-daemon-sysvinit', 'pkgver': '1:2.34.1-1ubuntu1.1'},
{'osver': '22.04', 'pkgname': 'git-email', 'pkgver': '1:2.34.1-1ubuntu1.1'},
{'osver': '22.04', 'pkgname': 'git-gui', 'pkgver': '1:2.34.1-1ubuntu1.1'},
{'osver': '22.04', 'pkgname': 'git-man', 'pkgver': '1:2.34.1-1ubuntu1.1'},
{'osver': '22.04', 'pkgname': 'git-mediawiki', 'pkgver': '1:2.34.1-1ubuntu1.1'},
{'osver': '22.04', 'pkgname': 'git-svn', 'pkgver': '1:2.34.1-1ubuntu1.1'},
{'osver': '22.04', 'pkgname': 'gitk', 'pkgver': '1:2.34.1-1ubuntu1.1'},
{'osver': '22.04', 'pkgname': 'gitweb', 'pkgver': '1:2.34.1-1ubuntu1.1'}
];
var flag = 0;
foreach package_array ( pkgs ) {
var osver = NULL;
var pkgname = NULL;
var pkgver = NULL;
if (!empty_or_null(package_array['osver'])) osver = package_array['osver'];
if (!empty_or_null(package_array['pkgname'])) pkgname = package_array['pkgname'];
if (!empty_or_null(package_array['pkgver'])) pkgver = package_array['pkgver'];
if (osver && pkgname && pkgver) {
if (ubuntu_check(osver:osver, pkgname:pkgname, pkgver:pkgver)) flag++;
}
}
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : ubuntu_report_get()
);
exit(0);
}
else
{
var tested = ubuntu_pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'git / git-all / git-cvs / git-daemon-run / git-daemon-sysvinit / etc');
}
Vendor | Product | Version | CPE |
---|---|---|---|
canonical | ubuntu_linux | 22.04 | cpe:/o:canonical:ubuntu_linux:22.04:-:lts |
canonical | ubuntu_linux | git | p-cpe:/a:canonical:ubuntu_linux:git |
canonical | ubuntu_linux | git-all | p-cpe:/a:canonical:ubuntu_linux:git-all |
canonical | ubuntu_linux | git-cvs | p-cpe:/a:canonical:ubuntu_linux:git-cvs |
canonical | ubuntu_linux | git-daemon-run | p-cpe:/a:canonical:ubuntu_linux:git-daemon-run |
canonical | ubuntu_linux | git-daemon-sysvinit | p-cpe:/a:canonical:ubuntu_linux:git-daemon-sysvinit |
canonical | ubuntu_linux | git-email | p-cpe:/a:canonical:ubuntu_linux:git-email |
canonical | ubuntu_linux | git-gui | p-cpe:/a:canonical:ubuntu_linux:git-gui |
canonical | ubuntu_linux | git-man | p-cpe:/a:canonical:ubuntu_linux:git-man |
canonical | ubuntu_linux | git-mediawiki | p-cpe:/a:canonical:ubuntu_linux:git-mediawiki |