OpenSSL up to 0.9.8c SSL_get_shared_ciphers memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.4$0-$5k0.00

A vulnerability, which was classified as very critical, has been found in OpenSSL (Network Encryption Software). Affected by this issue is the function SSL_get_shared_ciphers. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Buffer overflow in the SSL_get_shared_ciphers function in OpenSSL 0.9.7 before 0.9.7l, 0.9.8 before 0.9.8d, and earlier versions has unspecified impact and remote attack vectors involving a long list of ciphers.

The bug was discovered 09/27/2007. The weakness was released 09/28/2006 by Tavis Ormandy and Will Drewry with Google Security Team (Website). The advisory is shared for download at openssl.org. This vulnerability is handled as CVE-2006-3738 since 07/20/2006. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 07/08/2019).

It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 1367 days. During that time the estimated underground price was around $100k and more. The vulnerability scanner Nessus provides a plugin with the ID 26950 (Mandrake Linux Security Advisory : openssl (MDKSA-2007:193)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Mandriva Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 185030 (HP-UX Running OpenSSL Multiple Vulnerabilities (HPSBUX02174)).

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 2 years after the disclosure of the vulnerability. Attack attempts may be identified with Snort ID 8426. In this case the pattern |01 00 02| is used for detection. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 5077.

The vulnerability is also documented in the databases at X-Force (29237) and Tenable (26950). Entries connected to this vulnerability are available at 1786, 1803, 1858 and 1857.

Productinfo

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Support

  • end of life (old version)

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.4

VulDB Base Score: 7.3
VulDB Temp Score: 6.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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Exploitinginfo

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

Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 26950
Nessus Name: Mandrake Linux Security Advisory : openssl (MDKSA-2007:193)
Nessus File: 🔍
Nessus Risk: 🔍
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OpenVAS ID: 57478
OpenVAS Name: Debian Security Advisory DSA 1185-1 (openssl)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Patch: openssl.org

Snort ID: 8426
Snort Message: WEB-MISC SSLv2 openssl get shared ciphers overflow attempt
Snort Pattern: 🔍
TippingPoint: 🔍

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SourceFire IPS: 🔍
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PaloAlto IPS: 🔍
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Timelineinfo

12/31/2002 🔍
07/20/2006 +1297 days 🔍
09/28/2006 +70 days 🔍
09/28/2006 +0 days 🔍
09/28/2006 +0 days 🔍
09/28/2006 +0 days 🔍
09/28/2006 +0 days 🔍
09/29/2006 +0 days 🔍
09/29/2006 +0 days 🔍
10/03/2006 +4 days 🔍
09/27/2007 +359 days 🔍
10/07/2007 +10 days 🔍
10/09/2007 +2 days 🔍
05/12/2008 +216 days 🔍
07/08/2019 +4074 days 🔍

Sourcesinfo

Product: openssl.org

Advisory: openssl.org
Researcher: Tavis Ormandy, Will Drewry
Organization: Google Security Team
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2006-3738 (🔍)
OVAL: 🔍

X-Force: 29237 - OpenSSL SSL_get_shared_ciphers() buffer overflow, High Risk
SecurityTracker: 1016943
Vulnerability Center: 12815 - [cisco-sr-20061108-openssl, cisco-air-20061108-openssl] OpenSSL Buffer Overflow Allows Remote DoS and Code Execution, High
SecurityFocus: 20249 - OpenSSL SSL_Get_Shared_Ciphers Buffer Overflow Vulnerability
Secunia: 30161 - Gentoo ltsp Multiple Vulnerabilities, Highly Critical
OSVDB: 29262 - OpenSSL SSL_get_shared_ciphers Function Unspecified Remote Overflow
Vupen: ADV-2006-4443

See also: 🔍

Entryinfo

Created: 09/29/2006 10:44
Updated: 07/08/2019 22:24
Changes: 09/29/2006 10:44 (111), 07/08/2019 22:24 (6)
Complete: 🔍

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