6.8 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
8.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
0.017 Low
EPSS
Percentile
87.7%
Transmission relies on X-Transmission-Session-Id (which is not a forbidden header for Fetch) for access control, which allows remote attackers to execute arbitrary RPC commands, and consequently write to arbitrary files, via POST requests to /transmission/rpc in conjunction with a DNS rebinding attack. (CVE-2018-5702)
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux AMI Security Advisory ALAS-2018-950.
#
include("compat.inc");
if (description)
{
script_id(106695);
script_version("3.4");
script_cvs_date("Date: 2019/04/05 23:25:05");
script_cve_id("CVE-2018-5702");
script_xref(name:"ALAS", value:"2018-950");
script_name(english:"Amazon Linux AMI : transmission (ALAS-2018-950)");
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:
"Transmission relies on X-Transmission-Session-Id (which is not a
forbidden header for Fetch) for access control, which allows remote
attackers to execute arbitrary RPC commands, and consequently write to
arbitrary files, via POST requests to /transmission/rpc in conjunction
with a DNS rebinding attack. (CVE-2018-5702)"
);
script_set_attribute(
attribute:"see_also",
value:"https://alas.aws.amazon.com/ALAS-2018-950.html"
);
script_set_attribute(
attribute:"solution",
value:"Run 'yum update transmission' to update your system."
);
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/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:R/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:transmission");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:transmission-cli");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:transmission-common");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:transmission-daemon");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:transmission-debuginfo");
script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux");
script_set_attribute(attribute:"patch_publication_date", value:"2018/02/07");
script_set_attribute(attribute:"plugin_publication_date", value:"2018/02/09");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2018-2019 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:"transmission-2.92-11.12.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"transmission-cli-2.92-11.12.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"transmission-common-2.92-11.12.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"transmission-daemon-2.92-11.12.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"transmission-debuginfo-2.92-11.12.amzn1")) flag++;
if (flag)
{
if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
else security_warning(0);
exit(0);
}
else
{
tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "transmission / transmission-cli / transmission-common / etc");
}
Vendor | Product | Version | CPE |
---|---|---|---|
amazon | linux | transmission | p-cpe:/a:amazon:linux:transmission |
amazon | linux | transmission-cli | p-cpe:/a:amazon:linux:transmission-cli |
amazon | linux | transmission-common | p-cpe:/a:amazon:linux:transmission-common |
amazon | linux | transmission-daemon | p-cpe:/a:amazon:linux:transmission-daemon |
amazon | linux | transmission-debuginfo | p-cpe:/a:amazon:linux:transmission-debuginfo |
amazon | linux | cpe:/o:amazon:linux |
6.8 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
8.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
0.017 Low
EPSS
Percentile
87.7%