Vulnerability CVE-2015-5333

Vulnerability Name:

CVE-2015-5333 (CCN-107237)

Assigned:

2015-10-15

Published:

2015-10-15

Updated:

2020-01-29

Summary:

Memory leak in the OBJ_obj2txt function in LibreSSL before 2.3.1 allows remote attackers to cause a denial of service (memory consumption) via a large number of ASN.1 object identifiers in X.509 certificates.

CVSS v3 Severity:

7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.9 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:U/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): High

5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
4.9 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:U/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): Low Integrity (I): None Availibility (A): None

CVSS v2 Severity:

5.0 Medium (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 Authentication (Au): None
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:P/I:N/A:N)

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

Vulnerability Type:

CWE-400

Vulnerability Consequences:

Obtain Information

References:

Source: MITRE
Type: CNA
CVE-2015-5333

Source: CONFIRM
Type: Release Notes, Vendor Advisory
http://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-2.3.1-relnotes.txt

Source: MISC
Type: Mailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2015-10/msg00050.html

Source: MISC
Type: Exploit, Third Party Advisory, VDB Entry
http://packetstormsecurity.com/files/133998/Qualys-Security-Advisory-LibreSSL-Leak-Overflow.html

Source: CCN
Type: Full-Disclosure Mailing List, Thu, 15 Oct 2015 18:16:50 -0700
Qualys Security Advisory - LibreSSL (CVE-2015-5333 and CVE-2015-5334)

Source: CCN
Type: LibreSSL Web site
LibreSSL

Source: MISC
Type: Broken Link
http://www.securityfocus.com/archive/1/archive/1/536692/100/0/threaded

Source: XF
Type: UNKNOWN
libressl-cve20155333-info-disc(107237)

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2015-5333

Vulnerable Configuration:

Configuration 1:

cpe:/a:openbsd:libressl:*:*:*:*:*:*:*:* (Version < 2.3.1)

Configuration 2:

cpe:/o:opensuse:opensuse:13.2:*:*:*:*:*:*:*

Configuration CCN 1:

cpe:/a:openbsd:libressl:2.0.0:*:*:*:*:*:*:*

OR cpe:/a:openbsd:libressl:2.3.0:*:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:org.opensuse.security:def:20155333	V	CVE-2015-5333	2022-06-30
oval:org.opensuse.security:def:112612	P	libcrypto38-2.5.0-1.1 on GA media (Moderate)	2022-01-17
oval:org.opensuse.security:def:106096	P	libcrypto38-2.5.0-1.1 on GA media (Moderate)	2021-10-01

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