9.3 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:C/I:C/A:C
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:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
9.3 High
AI Score
Confidence
High
0.046 Low
EPSS
Percentile
92.6%
This update addresses various overflow conditions that could result in possible memory read/write out of bounds errors or zero byte allocations when connected to a malicious server.
Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Fedora Security Advisory FEDORA-2019-3348cb4934.
#
include('compat.inc');
if (description)
{
script_id(123760);
script_version("1.4");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/05");
script_cve_id(
"CVE-2019-3855",
"CVE-2019-3856",
"CVE-2019-3857",
"CVE-2019-3858",
"CVE-2019-3859",
"CVE-2019-3860",
"CVE-2019-3861",
"CVE-2019-3862",
"CVE-2019-3863"
);
script_xref(name:"FEDORA", value:"2019-3348cb4934");
script_name(english:"Fedora 28 : libssh2 (2019-3348cb4934)");
script_set_attribute(attribute:"synopsis", value:
"The remote Fedora host is missing a security update.");
script_set_attribute(attribute:"description", value:
"This update addresses various overflow conditions that could result in
possible memory read/write out of bounds errors or zero byte
allocations when connected to a malicious server.
Note that Tenable Network Security has extracted the preceding
description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as
possible without introducing additional issues.");
script_set_attribute(attribute:"see_also", value:"https://bodhi.fedoraproject.org/updates/FEDORA-2019-3348cb4934");
script_set_attribute(attribute:"solution", value:
"Update the affected libssh2 package.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/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:N/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-2019-3855");
script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2019-3862");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_set_attribute(attribute:"vuln_publication_date", value:"2019/03/21");
script_set_attribute(attribute:"patch_publication_date", value:"2019/04/05");
script_set_attribute(attribute:"plugin_publication_date", value:"2019/04/05");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:libssh2");
script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:28");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Fedora Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2019-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/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/RedHat/release");
if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora");
os_ver = pregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
os_ver = os_ver[1];
if (! preg(pattern:"^28([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 28", "Fedora " + os_ver);
if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu);
flag = 0;
if (rpm_check(release:"FC28", reference:"libssh2-1.8.1-1.fc28")) flag++;
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
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, "libssh2");
}
Vendor | Product | Version | CPE |
---|---|---|---|
fedoraproject | fedora | libssh2 | p-cpe:/a:fedoraproject:fedora:libssh2 |
fedoraproject | fedora | 28 | cpe:/o:fedoraproject:fedora:28 |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3855
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3856
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3857
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3858
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3859
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3860
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3861
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3862
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3863
bodhi.fedoraproject.org/updates/FEDORA-2019-3348cb4934
9.3 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:C/I:C/A:C
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:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
9.3 High
AI Score
Confidence
High
0.046 Low
EPSS
Percentile
92.6%