OpenSSL up to 1.0.0a ssl/t1_lib.c race condition

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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10.0$5k-$25k0.00

A vulnerability classified as very critical has been found in OpenSSL up to 1.0.0a (Network Encryption Software). Affected is an unknown code block in the library ssl/t1_lib.c. The manipulation with an unknown input leads to a race condition vulnerability. CWE is classifying the issue as CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Multiple race conditions in ssl/t1_lib.c in OpenSSL 0.9.8f through 0.9.8o, 1.0.0, and 1.0.0a, when multi-threading and internal caching are enabled on a TLS server, might allow remote attackers to execute arbitrary code via client data that triggers a heap-based buffer overflow, related to (1) the TLS server name extension and (2) elliptic curve cryptography.

The issue has been introduced in 10/11/2007. The weakness was shared 11/17/2010 as confirmed advisory (CERT.org). The advisory is available at kb.cert.org. This vulnerability is traded as CVE-2010-3864. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 10/05/2021).

The vulnerability was handled as a non-public zero-day exploit for at least 1133 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 17766 (OpenSSL < 0.9.8p / 1.0.0b Buffer Overflow), 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.

The vulnerability is also documented in the vulnerability database at Tenable (17766). The entries 55635, 54387 and 56808 are related to this item.

Productinfo

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Support

  • end of life (old version)

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 10.0

VulDB Base Score: 10.0
VulDB Temp Score: 10.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Race condition
CWE: CWE-362
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 17766
Nessus Name: OpenSSL < 0.9.8p / 1.0.0b Buffer Overflow
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 68673
OpenVAS Name: Slackware Advisory SSA:2010-326-01 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: 🔍

Timelineinfo

10/11/2007 🔍
10/08/2010 +1092 days 🔍
11/16/2010 +39 days 🔍
11/16/2010 +0 days 🔍
11/17/2010 +1 days 🔍
11/17/2010 +0 days 🔍
11/21/2010 +4 days 🔍
01/04/2012 +409 days 🔍
03/19/2015 +1170 days 🔍
10/05/2021 +2392 days 🔍

Sourcesinfo

Product: openssl.org

Advisory: dsa-2125
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2010-3864 (🔍)
OVAL: 🔍
IAVM: 🔍

Vulnerability Center: 28303 - [APSB11-11] OpenSSL 0.9.8f-0.9.8o and 1.0.0-1.0.0a Remote Arbitrary Code Execution Vulnerability via Client Data, High
SecurityFocus: 44884 - OpenSSL TLS Server Extension Parsing Buffer Overflow Vulnerability
Secunia: 42241

See also: 🔍

Entryinfo

Created: 03/19/2015 14:37
Updated: 10/05/2021 10:27
Changes: 03/19/2015 14:37 (65), 03/10/2017 10:14 (9), 10/05/2021 10:14 (6), 10/05/2021 10:20 (1), 10/05/2021 10:27 (1)
Complete: 🔍

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