CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.6	$0-$5k	0.00

Summaryinfo

A vulnerability classified as problematic has been found in OpenSSL. The impacted element is the function dtls1_buffer_record of the component DTLS Handler. This manipulation causes memory corruption. This vulnerability is registered as CVE-2015-0206. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in OpenSSL (Network Encryption Software). It has been declared as problematic. Affected by this vulnerability is the function dtls1_buffer_record of the component DTLS Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect availability.

The issue has been introduced in 06/01/2010. The weakness was published 01/08/2015 by Chris Mueller as secadv_20150108.txt as confirmed advisory (Website). It is possible to read the advisory at openssl.org. The public release has been coordinated with the project team. The advisory contains:

This issue was reported to OpenSSL on 7th January 2015 by Chris Mueller who also provided an initial patch. Further analysis was performed by Matt Caswell of the OpenSSL development team, who also developed the final patch.

This vulnerability is known as CVE-2015-0206 since 11/18/2014. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit. The advisory points out:

A memory leak can occur in the dtls1_buffer_record function under certain conditions. In particular this could occur if an attacker sent repeated DTLS records with the same sequence number but for the next epoch. The memory leak could be exploited by an attacker in a Denial of Service attack through memory exhaustion.

The vulnerability was handled as a non-public zero-day exploit for at least 1682 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 80925 (FreeBSD : LibreSSL -- DTLS vulnerability (f9c388c5-a256-11e4-992a-7b2a515a1247)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 350233 (Amazon Linux Security Advisory for openssl: ALAS-2015-469).

Upgrading to version 1.0.0p or 1.0.1k eliminates this vulnerability. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 13873.

The vulnerability is also documented in the databases at X-Force (99704), Tenable (80925), SecurityFocus (BID 71940†), SecurityTracker (ID 1031513†) and Vulnerability Center (SBV-56881†). Similar entries are available at VDB-68514, VDB-68516, VDB-68517 and VDB-68518. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Network Encryption Software

Name

• OpenSSL

Version

• 1.0.0a
• 1.0.0b
• 1.0.0c
• 1.0.0d
• 1.0.0e
• 1.0.0f
• 1.0.0g
• 1.0.0h
• 1.0.0i
• 1.0.0j
• 1.0.0k
• 1.0.0l
• 1.0.0m
• 1.0.0n
• 1.0.0o
• 1.0.1a
• 1.0.1b
• 1.0.1c
• 1.0.1d
• 1.0.1e
• 1.0.1f
• 1.0.1g
• 1.0.1h
• 1.0.1i
• 1.0.1j

License

• open-source

Support

• end of life (old version)

Website

• Product: https://www.openssl.org/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.6

VulDB Base Score: 5.3
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 80925
Nessus Name: FreeBSD : LibreSSL -- DTLS vulnerability (f9c388c5-a256-11e4-992a-7b2a515a1247)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 801612
OpenVAS Name: CentOS Update for openssl CESA-2015:0066 centos7
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: OpenSSL 1.0.0p/1.0.1k
Patch: github.com
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

ISS Proventia IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

06/01/2010 🔍
11/18/2014 +1631 days 🔍
01/06/2015 +49 days 🔍
01/07/2015 +0 days 🔍
01/08/2015 +1 days 🔍
01/08/2015 +0 days 🔍
01/08/2015 +0 days 🔍
01/09/2015 +1 days 🔍
01/21/2015 +12 days 🔍
01/22/2015 +1 days 🔍
07/20/2015 +178 days 🔍
03/01/2016 +226 days 🔍
03/01/2022 +2191 days 🔍

Sourcesinfo

Product: openssl.org

Advisory: secadv_20150108.txt
Researcher: Chris Mueller
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2015-0206 (🔍)
GCVE (CVE): GCVE-0-2015-0206
GCVE (VulDB): GCVE-100-68515

OVAL: 🔍

X-Force: 99704 - OpenSSL dtls1_buffer_record denial of service, Medium Risk
SecurityFocus: 71940 - OpenSSL 'dtls1_buffer_record()' Function Denial of Service Vulnerability
SecurityTracker: 1031513
Vulnerability Center: 56881 - [cisco-sa-20150310-ssl, cpuapr2015-2365600] OpenSSL Remote DoS due to a Memory Leak in the \, Medium

See also: 🔍

Entryinfo

Created: 01/09/2015 09:45
Updated: 03/01/2022 23:35
Changes: 01/09/2015 09:45 (83), 08/25/2018 09:13 (17), 03/01/2022 23:35 (4)
Complete: 🔍
Cache ID: 216:A45:103

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