The remote AlmaLinux 8 host has Git packages affected by two vulnerabilities (ALSA-2023:0610). The integer overflows can result in arbitrary heap reads and writes, leading to remote code execution. Upgrade to patched versions published on 2023-01-17, v2.30.7 or disable `git archive` in untrusted repositories
Reporter | Title | Published | Views | Family All 199 |
---|---|---|---|---|
![]() | Fedora: Security Advisory for git (FEDORA-2023-9718cc6113) | 22 Jan 202300:00 | – | openvas |
![]() | openSUSE: Security Advisory for git (SUSE-SU-2023:0110-1) | 4 Mar 202400:00 | – | openvas |
![]() | Ubuntu: Security Advisory (USN-5810-3) | 8 Feb 202300:00 | – | openvas |
![]() | Ubuntu: Security Advisory (USN-5810-4) | 2 Mar 202300:00 | – | openvas |
![]() | SUSE: Security Advisory (SUSE-SU-2023:0110-1) | 23 Jan 202300:00 | – | openvas |
![]() | CentOS: Security Advisory for emacs-git (CESA-2023:0978) | 2 Mar 202300:00 | – | openvas |
![]() | Ubuntu: Security Advisory (USN-5810-1) | 18 Jan 202300:00 | – | openvas |
![]() | Ubuntu: Security Advisory (USN-5810-2) | 20 Jan 202300:00 | – | openvas |
![]() | Mageia: Security Advisory (MGASA-2023-0033) | 28 Mar 202300:00 | – | openvas |
![]() | SUSE: Security Advisory (SUSE-SU-2023:0108-1) | 23 Jan 202300:00 | – | openvas |
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The package checks in this plugin were extracted from
# AlmaLinux Security Advisory ALSA-2023:0610.
##
include('compat.inc');
if (description)
{
script_id(171179);
script_version("1.0");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/02/08");
script_cve_id("CVE-2022-23521", "CVE-2022-41903");
script_xref(name:"ALSA", value:"2023:0610");
script_name(english:"AlmaLinux 8 : git (ALSA-2023:0610)");
script_set_attribute(attribute:"synopsis", value:
"The remote AlmaLinux host is missing one or more security updates.");
script_set_attribute(attribute:"description", value:
"The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the
ALSA-2023:0610 advisory.
- Git is distributed revision control system. gitattributes are a mechanism to allow defining attributes for
paths. These attributes can be defined by adding a `.gitattributes` file to the repository, which contains
a set of file patterns and the attributes that should be set for paths matching this pattern. When parsing
gitattributes, multiple integer overflows can occur when there is a huge number of path patterns, a huge
number of attributes for a single pattern, or when the declared attribute names are huge. These overflows
can be triggered via a crafted `.gitattributes` file that may be part of the commit history. Git silently
splits lines longer than 2KB when parsing gitattributes from a file, but not when parsing them from the
index. Consequentially, the failure mode depends on whether the file exists in the working tree, the index
or both. This integer overflow can result in arbitrary heap reads and writes, which may result in remote
code execution. The problem has been patched in the versions published on 2023-01-17, going back to
v2.30.7. Users are advised to upgrade. There are no known workarounds for this issue. (CVE-2022-23521)
- Git is distributed revision control system. `git log` can display commits in an arbitrary format using its
`--format` specifiers. This functionality is also exposed to `git archive` via the `export-subst`
gitattribute. When processing the padding operators, there is a integer overflow in
`pretty.c::format_and_pad_commit()` where a `size_t` is stored improperly as an `int`, and then added as
an offset to a `memcpy()`. This overflow can be triggered directly by a user running a command which
invokes the commit formatting machinery (e.g., `git log --format=...`). It may also be triggered
indirectly through git archive via the export-subst mechanism, which expands format specifiers inside of
files within the repository during a git archive. This integer overflow can result in arbitrary heap
writes, which may result in arbitrary code execution. The problem has been patched in the versions
published on 2023-01-17, going back to v2.30.7. Users are advised to upgrade. Users who are unable to
upgrade should disable `git archive` in untrusted repositories. If you expose git archive via `git
daemon`, disable it by running `git config --global daemon.uploadArch false`. (CVE-2022-41903)
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
script_set_attribute(attribute:"see_also", value:"https://errata.almalinux.org/8/ALSA-2023-0610.html");
script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/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:N/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-2022-41903");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_cwe_id(190);
script_set_attribute(attribute:"vuln_publication_date", value:"2023/01/17");
script_set_attribute(attribute:"patch_publication_date", value:"2023/02/06");
script_set_attribute(attribute:"plugin_publication_date", value:"2023/02/08");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:git");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:git-all");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:git-core");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:git-core-doc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:git-credential-libsecret");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:git-daemon");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:git-email");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:git-gui");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:git-instaweb");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:git-subtree");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:git-svn");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:gitk");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:gitweb");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:perl-Git");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:alma:linux:perl-Git-SVN");
script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:8");
script_set_attribute(attribute:"cpe", value:"cpe:/o:alma:linux:8::appstream");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Alma Linux Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/AlmaLinux/release", "Host/AlmaLinux/rpm-list", "Host/cpu");
exit(0);
}
include('rpm.inc');
if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/AlmaLinux/release');
if (isnull(os_release) || 'AlmaLinux' >!< os_release) audit(AUDIT_OS_NOT, 'AlmaLinux');
var os_ver = pregmatch(pattern: "AlmaLinux release ([0-9]+(\.[0-9]+)?)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'AlmaLinux');
os_ver = os_ver[1];
if (! preg(pattern:"^8([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, 'AlmaLinux 8.x', 'AlmaLinux ' + os_ver);
if (!get_kb_item('Host/AlmaLinux/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'AlmaLinux', cpu);
var pkgs = [
{'reference':'git-2.31.1-3.el8_7', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'git-2.31.1-3.el8_7', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'git-all-2.31.1-3.el8_7', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'git-core-2.31.1-3.el8_7', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'git-core-2.31.1-3.el8_7', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'git-core-doc-2.31.1-3.el8_7', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'git-credential-libsecret-2.31.1-3.el8_7', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'git-credential-libsecret-2.31.1-3.el8_7', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'git-daemon-2.31.1-3.el8_7', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'git-daemon-2.31.1-3.el8_7', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'git-email-2.31.1-3.el8_7', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'git-gui-2.31.1-3.el8_7', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'git-instaweb-2.31.1-3.el8_7', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'git-subtree-2.31.1-3.el8_7', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'git-subtree-2.31.1-3.el8_7', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'git-svn-2.31.1-3.el8_7', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'gitk-2.31.1-3.el8_7', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'gitweb-2.31.1-3.el8_7', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'perl-Git-2.31.1-3.el8_7', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
{'reference':'perl-Git-SVN-2.31.1-3.el8_7', 'release':'8', 'rpm_spec_vers_cmp':TRUE}
];
var flag = 0;
foreach var package_array ( pkgs ) {
var reference = NULL;
var _release = NULL;
var sp = NULL;
var _cpu = NULL;
var el_string = NULL;
var rpm_spec_vers_cmp = NULL;
var epoch = NULL;
var allowmaj = NULL;
var exists_check = NULL;
if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
if (!empty_or_null(package_array['release'])) _release = 'Alma-' + package_array['release'];
if (!empty_or_null(package_array['sp'])) sp = package_array['sp'];
if (!empty_or_null(package_array['cpu'])) _cpu = package_array['cpu'];
if (!empty_or_null(package_array['el_string'])) el_string = package_array['el_string'];
if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
if (!empty_or_null(package_array['epoch'])) epoch = package_array['epoch'];
if (!empty_or_null(package_array['allowmaj'])) allowmaj = package_array['allowmaj'];
if (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
if (reference && _release && (!exists_check || rpm_exists(release:_release, rpm:exists_check))) {
if (rpm_check(release:_release, sp:sp, cpu:_cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj)) flag++;
}
}
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
extra : rpm_report_get()
);
exit(0);
}
else
{
var tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'git / git-all / git-core / git-core-doc / git-credential-libsecret / etc');
}
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