CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
88.9%
ClamAV 0.101.4 is a security patch release that addresses the following issues.
An out of bounds write was possible within ClamAV’s NSIS bzip2 library when attempting decompression in cases where the number of selectors exceeded the max limit set by the library (CVE-2019-12900). The issue has been resolved by respecting that limit.
Thanks to Martin Simmons for reporting the issue here.
The zip bomb vulnerability mitigated in 0.101.3 has been assigned the CVE identifier CVE-2019-12625.
Unfortunately, a workaround for the zip-bomb mitigation was immediately identified. To remediate the zip-bomb scan time issue, a scan time limit has been introduced in 0.101.4. This limit now resolves ClamAV’s vulnerability to CVE-2019-12625.
The default scan time limit is 2 minutes (120000 milliseconds).
To customize the time limit :
use the clamscan --max-scantime option
use the clamd MaxScanTime config option
Libclamav users may customize the time limit using the cl_engine_set_num function. For example :
C cl_engine_set_num(engine, CL_ENGINE_MAX_SCANTIME, time_limit_milliseconds)
Thanks to David Fifield for reviewing the zip-bomb mitigation in 0.101.3 and reporting the issue.
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-aabcb53ec6.
#
include('compat.inc');
if (description)
{
script_id(128437);
script_version("1.4");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/30");
script_cve_id("CVE-2019-12625", "CVE-2019-12900");
script_xref(name:"FEDORA", value:"2019-aabcb53ec6");
script_name(english:"Fedora 29 : clamav (2019-aabcb53ec6)");
script_set_attribute(attribute:"synopsis", value:
"The remote Fedora host is missing a security update.");
script_set_attribute(attribute:"description", value:
"ClamAV 0.101.4 is a security patch release that addresses the
following issues.
- An out of bounds write was possible within ClamAV's NSIS
bzip2 library when attempting decompression in cases
where the number of selectors exceeded the max limit set
by the library (CVE-2019-12900). The issue has been
resolved by respecting that limit.
Thanks to Martin Simmons for reporting the issue here.
- The zip bomb vulnerability mitigated in 0.101.3 has been
assigned the CVE identifier CVE-2019-12625.
Unfortunately, a workaround for the zip-bomb mitigation
was immediately identified. To remediate the zip-bomb
scan time issue, a scan time limit has been introduced
in 0.101.4. This limit now resolves ClamAV's
vulnerability to CVE-2019-12625.
The default scan time limit is 2 minutes (120000
milliseconds).
To customize the time limit :
- use the clamscan --max-scantime option
- use the clamd MaxScanTime config option
Libclamav users may customize the time limit using the
cl_engine_set_num function. For example :
C cl_engine_set_num(engine, CL_ENGINE_MAX_SCANTIME,
time_limit_milliseconds)
Thanks to David Fifield for reviewing the zip-bomb
mitigation in 0.101.3 and reporting the issue.
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-aabcb53ec6");
script_set_attribute(attribute:"solution", value:
"Update the affected clamav package.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
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-2019-12900");
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:"2019/06/19");
script_set_attribute(attribute:"patch_publication_date", value:"2019/09/01");
script_set_attribute(attribute:"plugin_publication_date", value:"2019/09/03");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:clamav");
script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:29");
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:"^29([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 29", "Fedora " + os_ver);
if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu);
flag = 0;
if (rpm_check(release:"FC29", reference:"clamav-0.101.4-1.fc29")) 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, "clamav");
}
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
88.9%