OpenSSL up to 1.0.0c ClientHello Handshake resource management

CVSS Meta Temp Score
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CTI Interest Score
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6.6$0-$5k0.09

Summaryinfo

A vulnerability was found in OpenSSL up to 1.0.0c. It has been rated as critical. Affected by this issue is some unknown functionality of the component ClientHello Handshake. This manipulation causes resource management. This vulnerability is handled as CVE-2011-0014. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in OpenSSL up to 1.0.0c (Network Encryption Software). It has been declared as critical. Affected by this vulnerability is an unknown function of the component ClientHello Handshake. The manipulation with an unknown input leads to a resource management vulnerability. The CWE definition for the vulnerability is CWE-399. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

ssl/t1_lib.c in OpenSSL 0.9.8h through 0.9.8q and 1.0.0 through 1.0.0c allows remote attackers to cause a denial of service (crash), and possibly obtain sensitive information in applications that use OpenSSL, via a malformed ClientHello handshake message that triggers an out-of-bounds memory access, aka "OCSP stapling vulnerability."

The issue has been introduced in 05/28/2008. The weakness was released 02/08/2011 by Neel Mehta with Google (Website). It is possible to read the advisory at openssl.org. This vulnerability is known as CVE-2011-0014 since 12/07/2010. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available.

It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 986 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 75595 (openSUSE Security Update : libopenssl-devel (libopenssl-devel-3937)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 216041 (VMWare ESXi 5.0.0 Patch ESXi500-Update02 Missing (KB2033751)).

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at openssl.org. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published 6 days after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (75595), SecurityFocus (BID 46264†), OSVDB (70847†), Secunia (SA43227†) and SecurityTracker (ID 1025050†). Entries connected to this vulnerability are available at VDB-4514, VDB-4515, VDB-4518 and VDB-4517. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Name

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: 7.3
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 75595
Nessus Name: openSUSE Security Update : libopenssl-devel (libopenssl-devel-3937)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 68997
OpenVAS Name: Debian Security Advisory DSA 2162-1 (openssl)
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: 🔍

Patch: openssl.org

Timelineinfo

05/28/2008 🔍
12/07/2010 +923 days 🔍
02/08/2011 +63 days 🔍
02/08/2011 +0 days 🔍
02/09/2011 +1 days 🔍
02/11/2011 +1 days 🔍
02/14/2011 +3 days 🔍
02/16/2011 +2 days 🔍
02/18/2011 +2 days 🔍
04/16/2012 +423 days 🔍
06/13/2014 +788 days 🔍
03/14/2016 +640 days 🔍
02/01/2019 +1054 days 🔍

Sourcesinfo

Product: openssl.org

Advisory: openssl.org
Researcher: Neel Mehta
Organization: Google
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2011-0014 (🔍)
GCVE (CVE): GCVE-0-2011-0014
GCVE (VulDB): GCVE-100-4291

OVAL: 🔍
IAVM: 🔍

SecurityFocus: 46264 - OpenSSL OCSP Stapling 'ClientHello' Handshake Message Parsing Security Vulnerability
Secunia: 43227 - OpenSSL ClientHello Handshake Message Parsing Vulnerability, Moderately Critical
OSVDB: 70847 - OpenSSL ClientHello Handshake Message Parsing Invalid Memory Access
SecurityTracker: 1025050
Vulnerability Center: 57294 - OpenSSL 0.9.8h-0.9.8q and 1.0.0-1.0.0c OCSP DoS Vulnerability via a Crafted \x27ClientHello\x27 Message, Medium
Vupen: ADV-2011-0387

See also: 🔍

Entryinfo

Created: 02/16/2011 11:01
Updated: 02/01/2019 09:35
Changes: 02/16/2011 11:01 (95), 02/01/2019 09:35 (9)
Complete: 🔍
Cache ID: 216:380:103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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