According to the versions of the squid package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :
An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to incorrect parser validation, it allows a Denial of Service attack against the Cache Manager API. This allows a trusted client to trigger memory leaks that. over time, lead to a Denial of Service via an unspecified short query string. This attack is limited to clients with Cache Manager API access privilege.(CVE-2021-28652)
An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a buffer-management bug, it allows a denial of service. When resolving a request with the urn: scheme, the parser leaks a small amount of memory.
However, there is an unspecified attack methodology that can easily trigger a large amount of memory consumption.(CVE-2021-28651)
An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a memory-management bug, it is vulnerable to a Denial of Service attack (against all clients using the proxy) via HTTP Range request processing.(CVE-2021-31806)
Squid before 4.15 and 5.x before 5.0.6 allows remote servers to cause a denial of service (affecting availability to all clients) via an HTTP response. The issue trigger is a header that can be expected to exist in HTTP traffic without any malicious intent by the server.(CVE-2021-33620)
An issue was discovered in Squid 4.x before 4.15 and 5.x before 5.0.6. If a remote server sends a certain response header over HTTP or HTTPS, there is a denial of service. This header can plausibly occur in benign network traffic.(CVE-2021-28662)
An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to an input-validation bug, it is vulnerable to a Denial of Service attack (against all clients using the proxy). A client sends an HTTP Range request to trigger this.(CVE-2021-31808)
An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. An integer overflow problem allows a remote server to achieve Denial of Service when delivering responses to HTTP Range requests. The issue trigger is a header that can be expected to exist in HTTP traffic without any malicious intent.(CVE-2021-31807)
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(152405);
script_version("1.3");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/12/04");
script_cve_id(
"CVE-2021-28651",
"CVE-2021-28652",
"CVE-2021-28662",
"CVE-2021-31806",
"CVE-2021-31807",
"CVE-2021-31808",
"CVE-2021-33620"
);
script_name(english:"EulerOS 2.0 SP8 : squid (EulerOS-SA-2021-2317)");
script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS host is missing multiple security updates.");
script_set_attribute(attribute:"description", value:
"According to the versions of the squid package installed, the EulerOS
installation on the remote host is affected by the following
vulnerabilities :
- An issue was discovered in Squid before 4.15 and 5.x
before 5.0.6. Due to incorrect parser validation, it
allows a Denial of Service attack against the Cache
Manager API. This allows a trusted client to trigger
memory leaks that. over time, lead to a Denial of
Service via an unspecified short query string. This
attack is limited to clients with Cache Manager API
access privilege.(CVE-2021-28652)
- An issue was discovered in Squid before 4.15 and 5.x
before 5.0.6. Due to a buffer-management bug, it allows
a denial of service. When resolving a request with the
urn: scheme, the parser leaks a small amount of memory.
However, there is an unspecified attack methodology
that can easily trigger a large amount of memory
consumption.(CVE-2021-28651)
- An issue was discovered in Squid before 4.15 and 5.x
before 5.0.6. Due to a memory-management bug, it is
vulnerable to a Denial of Service attack (against all
clients using the proxy) via HTTP Range request
processing.(CVE-2021-31806)
- Squid before 4.15 and 5.x before 5.0.6 allows remote
servers to cause a denial of service (affecting
availability to all clients) via an HTTP response. The
issue trigger is a header that can be expected to exist
in HTTP traffic without any malicious intent by the
server.(CVE-2021-33620)
- An issue was discovered in Squid 4.x before 4.15 and
5.x before 5.0.6. If a remote server sends a certain
response header over HTTP or HTTPS, there is a denial
of service. This header can plausibly occur in benign
network traffic.(CVE-2021-28662)
- An issue was discovered in Squid before 4.15 and 5.x
before 5.0.6. Due to an input-validation bug, it is
vulnerable to a Denial of Service attack (against all
clients using the proxy). A client sends an HTTP Range
request to trigger this.(CVE-2021-31808)
- An issue was discovered in Squid before 4.15 and 5.x
before 5.0.6. An integer overflow problem allows a
remote server to achieve Denial of Service when
delivering responses to HTTP Range requests. The issue
trigger is a header that can be expected to exist in
HTTP traffic without any malicious
intent.(CVE-2021-31807)
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-2021-2317
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?be81278a");
script_set_attribute(attribute:"solution", value:
"Update the affected squid packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
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:N/I:N/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-28651");
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:"2021/08/09");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/08/10");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:squid");
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) 2021-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/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|$)") audit(AUDIT_OS_NOT, "EulerOS 2.0");
sp = get_kb_item("Host/EulerOS/sp");
if (isnull(sp) || sp !~ "^(8)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP8");
uvp = get_kb_item("Host/EulerOS/uvp_version");
if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP8", "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 ("aarch64" >!< cpu) audit(AUDIT_ARCH_NOT, "aarch64", cpu);
flag = 0;
pkgs = ["squid-4.2-2.h14.eulerosv2r8"];
foreach (pkg in pkgs)
if (rpm_check(release:"EulerOS-2.0", sp:"8", 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, "squid");
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28651
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28652
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28662
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31806
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31807
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31808
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33620
www.nessus.org/u?be81278a