LibreSSL 2.1.1 d1_srtp.c ssl_parse_clienthello_use_srtp_ext double free

EntryHistoryDiffjsonxmlCTI

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.6	$0-$5k	0.00

A vulnerability classified as problematic has been found in LibreSSL 2.1.1. This affects the function ssl_parse_clienthello_use_srtp_ext of the file d1_srtp.c. The manipulation with an unknown input leads to a double free vulnerability. CWE is classifying the issue as CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. This is going to have an impact on availability.

The weakness was shared 11/27/2014 as confirmed git commit (GIT Repository). It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2014-9424 since 12/28/2014. The exploitability is told to be easy. 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.

Upgrading to version 2.1.2 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at X-Force (99662).

Productinfo

Name

LibreSSL

Version

2.1.1

License

open-source

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: 4.6

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

NVD Base Score: 🔍

Exploitinginfo

Class: Double free
CWE: CWE-415 / CWE-119
ATT&CK: Unknown

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

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: LibreSSL 2.1.2
Patch: github.com

Timelineinfo

11/27/2014 🔍
11/27/2014 +0 days 🔍
12/28/2014 +31 days 🔍
12/28/2014 +0 days 🔍
01/07/2015 +10 days 🔍
01/12/2015 +5 days 🔍
03/01/2022 +2605 days 🔍

Sourcesinfo

Advisory: 62a110d447bb8c16a4c69629e28a42e8c39fd7e0
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-9424 (🔍)
X-Force: 99662 - LibreSSL d1_srtp.c denial of service, Medium Risk
Vulnerability Center: 47997 - OpenBSD LibreSSL before 2.1.2 Remote DoS or Other Impact When Processing DTLS Handshake Messages, High

Entryinfo

Created: 01/07/2015 12:17
Updated: 03/01/2022 21:30
Changes: 01/07/2015 12:17 (57), 06/17/2017 07:47 (2), 03/01/2022 21:30 (4)
Complete: 🔍