Vulnerability CVE-2019-19269

Vulnerability Name:

CVE-2019-19269 (CCN-172219)

Assigned:

2019-11-05

Published:

2019-11-05

Updated:

2020-01-13

Summary:

An issue was discovered in tls_verify_crl in ProFTPD through 1.3.6b. A dereference of a NULL pointer may occur. This pointer is returned by the OpenSSL sk_X509_REVOKED_value() function when encountering an empty CRL installed by a system administrator. The dereference occurs when validating the certificate of a client connecting to the server in a TLS client/server mutual-authentication setup.

CVSS v3 Severity:

4.9 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H)
4.3 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): High User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): High

5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
4.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Low

CVSS v2 Severity:

4.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:S/C:N/I:N/A:P)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Authentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Partial

5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Athentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Partial

Vulnerability Type:

CWE-476

Vulnerability Consequences:

Denial of Service

References:

Source: MITRE
Type: CNA
CVE-2019-19269

Source: SUSE
Type: UNKNOWN
openSUSE-SU-2020:0031

Source: XF
Type: UNKNOWN
proftpd-cve201919269-dos(172219)

Source: CCN
Type: proftpd GIT Repository
DoS (nullptr dereference) 1/2 with CRLs in mod_tls of ProFTPD < 1.3.6 #858

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/proftpd/proftpd/issues/861

Source: MLIST
Type: Third Party Advisory
[debian-lts-announce] 20191130 [SECURITY] [DLA 2018-1] proftpd-dfsg security update

Source: FEDORA
Type: Third Party Advisory
FEDORA-2019-65a983b8b6

Source: FEDORA
Type: Third Party Advisory
FEDORA-2019-bfacf1e958

Source: GENTOO
Type: UNKNOWN
GLSA-202003-35

Source: N/A
Type: UNKNOWN
N/A

Vulnerable Configuration:

Configuration 1:

cpe:/a:proftpd:proftpd:*:*:*:*:*:*:*:* (Version <= 1.3.5e)

OR cpe:/a:proftpd:proftpd:1.3.6:-:*:*:*:*:*:*

OR cpe:/a:proftpd:proftpd:1.3.6:alpha:*:*:*:*:*:*

OR cpe:/a:proftpd:proftpd:1.3.6:beta:*:*:*:*:*:*

OR cpe:/a:proftpd:proftpd:1.3.6:rc1:*:*:*:*:*:*

OR cpe:/a:proftpd:proftpd:1.3.6:rc2:*:*:*:*:*:*

OR cpe:/a:proftpd:proftpd:1.3.6:rc3:*:*:*:*:*:*

OR cpe:/a:proftpd:proftpd:1.3.6:rc4:*:*:*:*:*:*

Configuration 2:

cpe:/o:fedoraproject:fedora:30:*:*:*:*:*:*:*

OR cpe:/o:fedoraproject:fedora:31:*:*:*:*:*:*:*

Configuration 3:

cpe:/o:debian:debian_linux:8.0:*:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:org.opensuse.security:def:201919269	V	CVE-2019-19269	2022-06-30
oval:org.opensuse.security:def:113176	P	proftpd-1.3.6e-1.10 on GA media (Moderate)	2022-01-17
oval:org.opensuse.security:def:74757	P	Security update for go1.17 (Moderate)	2021-12-23
oval:org.opensuse.security:def:106598	P	proftpd-1.3.6e-1.10 on GA media (Moderate)	2021-10-01
oval:org.opensuse.security:def:64570	P	Security update for java-11-openjdk (Important)	2021-09-03
oval:org.opensuse.security:def:93576	P	(Moderate)	2021-08-23
oval:org.opensuse.security:def:63461	P	vpx-tools-1.6.1-6.6.8 on GA media (Moderate)	2021-08-10
oval:org.opensuse.security:def:62787	P	libgypsy-devel-0.9-2.30 on GA media (Moderate)	2021-08-09
oval:org.opensuse.security:def:62755	P	gstreamer-plugins-bad-1.16.2-7.22 on GA media (Moderate)	2021-08-09
oval:org.opensuse.security:def:62759	P	hplip-3.20.11-2.1 on GA media (Moderate)	2021-08-09
oval:org.opensuse.security:def:62762	P	imlib2-loaders-1.4.10-1.28 on GA media (Moderate)	2021-08-09
oval:org.opensuse.security:def:100289	P	(Moderate)	2021-06-04
oval:org.opensuse.security:def:64512	P	Security update for gstreamer, gstreamer-plugins-bad, gstreamer-plugins-base, gstreamer-plugins-good, gstreamer-plugins-ugly (Important)	2021-06-01
oval:org.opensuse.security:def:64682	P	Security update for avahi (Moderate)	2021-05-04
oval:org.opensuse.security:def:74624	P	Security update for spamassassin (Important)	2021-04-13
oval:org.opensuse.security:def:63608	P	argyllcms-1.9.2-2.27 on GA media (Moderate)	2020-12-03
oval:org.opensuse.security:def:62965	P	log4j12-javadoc-1.2.17-2.26 on GA media (Moderate)	2020-12-03
oval:org.opensuse.security:def:63258	P	dhcp-relay-4.3.5-6.3.1 on GA media (Moderate)	2020-12-03
oval:org.opensuse.security:def:64302	P	libXfont-devel on GA media (Moderate)	2020-12-01
oval:org.opensuse.security:def:64303	P	libXfont2-2 on GA media (Moderate)	2020-12-01
oval:org.opensuse.security:def:63837	P	Security update for clamav (Moderate)	2020-12-01
oval:org.opensuse.security:def:64410	P	libykcs11-1 on GA media (Moderate)	2020-12-01
oval:org.opensuse.security:def:64166	P	Security update for xen (Important)	2020-12-01
oval:org.opensuse.security:def:110419	P	Security update for proftpd (Moderate)	2020-01-13
oval:com.ubuntu.disco:def:2019192690000000	V	CVE-2019-19269 on Ubuntu 19.04 (disco) - medium.	2019-11-30
oval:com.ubuntu.bionic:def:2019192690000000	V	CVE-2019-19269 on Ubuntu 18.04 LTS (bionic) - medium.	2019-11-30
oval:com.ubuntu.xenial:def:2019192690000000	V	CVE-2019-19269 on Ubuntu 16.04 LTS (xenial) - medium.	2019-11-30

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