OpenSSL 0.9.8/1.0.0/1.0.1/1.0.2 SSLv2 Message CLIENT-MASTER-KEY Message input validation

CVSS Meta Temp Score
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CTI Interest Score
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4.6$0-$5k0.00

Summaryinfo

A vulnerability was found in OpenSSL 0.9.8/1.0.0/1.0.1/1.0.2. It has been classified as problematic. Affected is an unknown function of the component SSLv2 Message Handler. The manipulation as part of CLIENT-MASTER-KEY Message leads to input validation. This vulnerability is documented as CVE-2015-0293. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in OpenSSL 0.9.8/1.0.0/1.0.1/1.0.2 (Network Encryption Software). It has been rated as problematic. This issue affects an unknown code block of the component SSLv2 Message Handler. The manipulation as part of a CLIENT-MASTER-KEY Message leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is availability.

The issue has been introduced in 07/05/2005. The weakness was released 03/19/2015 by Sean Burford with OpenSSL as secadv_20150319.txt as confirmed advisory (Website). It is possible to read the advisory at openssl.org. The identification of this vulnerability is CVE-2015-0293 since 11/18/2014. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 3544 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 82900 (AIX OpenSSL Advisory : openssl_advisory13.asc), which helps to determine the existence of the flaw in a target environment. It is assigned to the family AIX Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 185104 (HP-UX Running OpenSSL Remote Denial of Service Vulnerability (HPSBUX03334)).

Upgrading to version 0.9.8zf, 1.0.0r, 1.0.1m or 1.0.2a eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (101671), Tenable (82900), SecurityFocus (BID 73232†), SecurityTracker (ID 1031929†) and Vulnerability Center (SBV-56905†). grahamcluley.com is providing further details. Entries connected to this vulnerability are available at VDB-74043, VDB-74044, VDB-74045 and VDB-74046. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Version

License

Support

  • end of life (old version)

Website

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

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VulDB Base Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 82900
Nessus Name: AIX OpenSSL Advisory : openssl_advisory13.asc
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 800731
OpenVAS Name: Fedora Update for openssl FEDORA-2015-4303
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 0.9.8zf/1.0.0r/1.0.1m/1.0.2a
Patch: 86f8fb0e344d62454f8daf3e15236b2b59210756
ISS Proventia IPS: 🔍

Timelineinfo

07/05/2005 🔍
11/18/2014 +3423 days 🔍
03/16/2015 +118 days 🔍
03/18/2015 +2 days 🔍
03/19/2015 +0 days 🔍
03/19/2015 +0 days 🔍
03/19/2015 +0 days 🔍
03/20/2015 +1 days 🔍
04/20/2015 +30 days 🔍
07/20/2015 +91 days 🔍
03/01/2016 +226 days 🔍
04/15/2022 +2235 days 🔍

Sourcesinfo

Product: openssl.org

Advisory: secadv_20150319.txt
Researcher: Sean Burford
Organization: OpenSSL
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-0293 (🔍)
GCVE (CVE): GCVE-0-2015-0293
GCVE (VulDB): GCVE-100-74051

OVAL: 🔍

X-Force: 101671 - OpenSSL SSLv2 CLIENT-MASTER-KEY denial of service
SecurityFocus: 73232 - OpenSSL CVE-2015-0293 Denial of Service Vulnerability
SecurityTracker: 1031929
Vulnerability Center: 56905 - OpenSSL Remote DoS via a Crafted CLIENT-MASTER-KEY Message - CVE-2015-0293, Medium

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 03/20/2015 09:52
Updated: 04/15/2022 21:37
Changes: 03/20/2015 09:52 (76), 08/25/2018 09:20 (15), 04/15/2022 21:37 (5)
Complete: 🔍
Cache ID: 216::103

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