OpenSSL up to 1.0.0s/1.0.1o/1.0.2c PSK Identity Hint race condition

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3.2	$0-$5k	0.00

Summaryinfo

A vulnerability was found in OpenSSL up to 1.0.0s/1.0.1o/1.0.2c. It has been classified as problematic. This issue affects some unknown processing of the component PSK Identity Hint Handler. Performing a manipulation results in race condition. This vulnerability was named CVE-2015-3196. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in OpenSSL up to 1.0.0s/1.0.1o/1.0.2c (Network Encryption Software). It has been classified as problematic. This affects an unknown code block of the component PSK Identity Hint Handler. 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 availability.

The weakness was presented 12/03/2015 by Dr. Stephen Henson with OpenSSL as 20151203.txt as confirmed advisory (Website). The advisory is shared at openssl.org. The public release was coordinated in cooperation with the project team. This vulnerability is uniquely identified as CVE-2015-3196 since 04/10/2015. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. The advisory points out:

If PSK identity hints are received by a multi-threaded client then the values are wrongly updated in the parent SSL_CTX structure. This can result in a race condition potentially leading to a double free of the identify hint data.

The vulnerability scanner Nessus provides a plugin with the ID 87434 (F5 Networks BIG-IP : OpenSSL vulnerability (K55540723)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family F5 Networks Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 350088 (Amazon Linux Security Advisory for openssl: ALAS-2015-614).

Upgrading to version 1.0.0t, 1.0.1p or 1.0.2d 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 (108505), Tenable (87434), SecurityFocus (BID 78622†) and Vulnerability Center (SBV-56813†). See VDB-79410, VDB-79411, VDB-79412 and VDB-79417 for similar entries. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Network Encryption Software

Name

• OpenSSL

Version

• 1.0.0a
• 1.0.0b
• 1.0.0c
• 1.0.0d
• 1.0.0e
• 1.0.0f
• 1.0.0g
• 1.0.0h
• 1.0.0i
• 1.0.0j
• 1.0.0k
• 1.0.0l
• 1.0.0m
• 1.0.0n
• 1.0.0o
• 1.0.0p
• 1.0.0q
• 1.0.0r
• 1.0.0s
• 1.0.1a
• 1.0.1b
• 1.0.1c
• 1.0.1d
• 1.0.1e
• 1.0.1f
• 1.0.1g
• 1.0.1h
• 1.0.1i
• 1.0.1j
• 1.0.1k
• 1.0.1l
• 1.0.1m
• 1.0.1n
• 1.0.1o
• 1.0.2
• 1.0.2a
• 1.0.2b
• 1.0.2c

License

• open-source

Support

• end of life (old version)

Website

• Product: https://www.openssl.org/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.7
VulDB Meta Temp Score: 3.2

VulDB Base Score: 3.7
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 87434
Nessus Name: F5 Networks BIG-IP : OpenSSL vulnerability (K55540723)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703413
OpenVAS Name: Debian Security Advisory DSA 3413-1 (openssl - security update)
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 1.0.0t/1.0.1p/1.0.2d
Patch: 3c66a669dfc7b3792f7af0758ea26fe8502ce70c

Timelineinfo

04/10/2015 🔍
12/02/2015 +236 days 🔍
12/02/2015 +0 days 🔍
12/03/2015 +0 days 🔍
12/03/2015 +0 days 🔍
12/04/2015 +1 days 🔍
12/06/2015 +2 days 🔍
12/16/2015 +10 days 🔍
02/28/2016 +74 days 🔍
06/28/2022 +2311 days 🔍

Sourcesinfo

Product: openssl.org

Advisory: 20151203.txt
Researcher: Dr. Stephen Henson
Organization: OpenSSL
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2015-3196 (🔍)
GCVE (CVE): GCVE-0-2015-3196
GCVE (VulDB): GCVE-100-79413

OVAL: 🔍

X-Force: 108505 - OpenSSL PSK identity hint denial of service
SecurityFocus: 78622 - OpenSSL CVE-2015-3196 Denial of Service Vulnerability
SecurityTracker: 1034294
Vulnerability Center: 56813 - OpenSSL Remote DoS via a Crafted ServerKeyExchange, Medium

See also: 🔍

Entryinfo

Created: 12/04/2015 10:18
Updated: 06/28/2022 14:24
Changes: 12/04/2015 10:18 (78), 08/24/2018 09:09 (6), 06/28/2022 14:24 (6)
Complete: 🔍
Cache ID: 216::103

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Discussion

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