OpenSSL 1.0.1e-25.el7 on Red Hat Lock Mechanism ssleay_rand_bytes race condition

CVSS Meta Temp Score
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CTI Interest Score
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4.6$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in OpenSSL 1.0.1e-25.el7 on Red Hat. The impacted element is the function ssleay_rand_bytes of the component Lock Mechanism. Performing a manipulation results in race condition. This vulnerability is identified as CVE-2015-3216. There is not any exploit available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability classified as problematic has been found in OpenSSL 1.0.1e-25.el7 on Red Hat (Network Encryption Software). This affects the function ssleay_rand_bytes of the component Lock Mechanism. 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 issue has been introduced in 02/11/2013. The weakness was released 06/15/2015 by Johannes Bauer as RHSA-2015-1115 as confirmed advisory (Website). It is possible to read the advisory at rhn.redhat.com. This vulnerability is uniquely identified as CVE-2015-3216 since 04/10/2015. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The advisory points out:

A flaw was found in the way the OpenSSL packages shipped with Red Hat Enterprise Linux 6 and 7 performed locking in the ssleay_rand_bytes() function. This issue could possibly cause a multi-threaded application using OpenSSL to perform an out-of-bounds read and crash.

The vulnerability was handled as a non-public zero-day exploit for at least 854 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 84203 (OracleVM 3.3 : openssl (OVMSA-2015-0070)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family OracleVM Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 350152 (Amazon Linux Security Advisory for openssl: ALAS-2015-550).

Applying a patch is able to eliminate this problem.

The vulnerability is also documented in the databases at X-Force (103915), Tenable (84203), SecurityFocus (BID 75219†), SecurityTracker (ID 1032587†) and Vulnerability Center (SBV-51031†). Entries connected to this vulnerability are available at VDB-75496, VDB-78627, VDB-78668 and VDB-80581. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Red Hat Enterprise Linux 6/7

Productinfo

Type

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: 5.3
VulDB Meta Temp Score: 4.6

VulDB Base Score: 5.3
VulDB Temp Score: 4.6
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: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 84203
Nessus Name: OracleVM 3.3 : openssl (OVMSA-2015-0070)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 10462
OpenVAS Name: RedHat Update for openssl RHSA-2015:1115-01
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/11/2013 🔍
04/10/2015 +788 days 🔍
05/28/2015 +48 days 🔍
05/28/2015 +0 days 🔍
06/15/2015 +18 days 🔍
06/16/2015 +1 days 🔍
06/17/2015 +1 days 🔍
07/07/2015 +20 days 🔍
07/08/2015 +1 days 🔍
05/21/2022 +2509 days 🔍

Sourcesinfo

Product: openssl.org

Advisory: RHSA-2015-1115
Researcher: Johannes Bauer
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-3216 (🔍)
GCVE (CVE): GCVE-0-2015-3216
GCVE (VulDB): GCVE-100-75951

OVAL: 🔍

X-Force: 103915 - OpenSSL shipped with Red Hat Enterprise Linux ssleay_rand_bytes() denial of service
SecurityFocus: 75219 - OpenSSL 'ssleay_rand_bytes()' Function Denial of Service Vulnerability
SecurityTracker: 1032587 - Red Hat OpenSSL Locking Error in ssleay_rand_bytes() Lets Remote Users Deny Service
Vulnerability Center: 51031 - OpenSSL Remote DoS due to Many TLS Sessions in the Ssleay_Rand_Bytes Function (), Medium

See also: 🔍

Entryinfo

Created: 06/17/2015 09:11
Updated: 05/21/2022 08:47
Changes: 06/17/2015 09:11 (74), 09/16/2017 10:25 (13), 05/21/2022 08:42 (3), 05/21/2022 08:47 (1)
Complete: 🔍
Cache ID: 216:DED:103

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