OpenSSL 0.9.7/0.9.8/1.0.0a ssl3_get_key_exchange resource management

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.0$0-$5k0.00

A vulnerability classified as critical has been found in OpenSSL 0.9.7/0.9.8/1.0.0a (Network Encryption Software). This affects the function ssl3_get_key_exchange. The manipulation with an unknown input leads to a resource management vulnerability. CWE is classifying the issue as CWE-399. This is going to have an impact on availability. The summary by CVE is:

Double free vulnerability in the ssl3_get_key_exchange function in the OpenSSL client (ssl/s3_clnt.c) in OpenSSL 1.0.0a, 0.9.8, 0.9.7, and possibly other versions, when using ECDH, allows context-dependent attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted private key with an invalid prime. NOTE: some sources refer to this as a use-after-free issue.

The issue has been introduced in 12/31/2002. The weakness was disclosed 08/17/2010 by Georgi Guninski (Website). It is possible to read the advisory at vupen.com. This vulnerability is uniquely identified as CVE-2010-2939 since 08/04/2010. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details and a public exploit are known.

The exploit is shared for download at securityfocus.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 2786 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 17767 (OpenSSL < 0.9.8p / 1.0.0e Double Free Vulnerability), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Web Servers. The commercial vulnerability scanner Qualys is able to test this issue with plugin 216013 (VMWare ESXi 4.0.0 Patch Release ESXi400-201103001 Missing (KB1032823)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 10679.

The vulnerability is also documented in the vulnerability database at Tenable (17767). The entries 3781, 3782, 3780 and 3779 are pretty similar.

Productinfo

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Name

Version

License

Support

  • end of life (old version)

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.0

VulDB Base Score: 5.3
VulDB Temp Score: 5.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

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

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 17767
Nessus Name: OpenSSL < 0.9.8p / 1.0.0e Double Free Vulnerability
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 67987
OpenVAS Name: Debian Security Advisory DSA 2100-1 (openssl)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

ISS Proventia IPS: 🔍
PaloAlto IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

12/31/2002 🔍
08/04/2010 +2773 days 🔍
08/07/2010 +3 days 🔍
08/07/2010 +0 days 🔍
08/09/2010 +2 days 🔍
08/09/2010 +0 days 🔍
08/17/2010 +8 days 🔍
08/17/2010 +0 days 🔍
08/19/2010 +2 days 🔍
01/04/2012 +503 days 🔍
03/19/2015 +1170 days 🔍
09/23/2021 +2380 days 🔍

Sourcesinfo

Product: openssl.org

Advisory: USN-1003-1⛔
Researcher: Georgi Guninski
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2010-2939 (🔍)
OVAL: 🔍
IAVM: 🔍

SecurityTracker: 1024296 - OpenSSL Key Exchange Memory Corruption Error Lets Remote Users Deny Service
Vulnerability Center: 26842 - OpenSSL 1.0.0a ssl3_get_key_exchange() Remote DoS or Code Execution Vulnerability, Medium
SecurityFocus: 42306 - OpenSSL 'ssl3_get_key_exchange()' Use-After-Free Memory Corruption Vulnerability
Secunia: 40906 - OpenSSL "ssl3_get_key_exchange()" Use-After-Free Vulnerability, Moderately Critical
Vupen: ADV-2010-2038

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 03/19/2015 14:37
Updated: 09/23/2021 08:53
Changes: 03/19/2015 14:37 (71), 03/03/2017 08:09 (23), 09/23/2021 08:52 (3), 09/23/2021 08:53 (1)
Complete: 🔍

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