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.
6.2	$0-$5k	0.00

A vulnerability was found in OpenSSL (Network Encryption Software) (affected version not known). It has been classified as critical. Affected is some unknown functionality of the component X.509 Certificate. The manipulation as part of a IPAdressFamily Extension leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

While parsing an IPAdressFamily extension in an X.509 certificate, it is possible to do a one-byte overread. This would result in an incorrect text display of the certificate. This bug has been present since 2006 and is present in all versions of OpenSSL since then.

The bug was discovered 08/28/2017. The weakness was presented 08/28/2017 by OSS-Fuzz with Google (Website). The advisory is shared for download at openssl.org. This vulnerability is traded as CVE-2017-3735 since 12/16/2016. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 12/16/2022).

The vulnerability scanner Nessus provides a plugin with the ID 104729 (Fedora 26 : 1:compat-openssl10 (2017-7f30914972)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 237021 (Red Hat Update for openssl (RHSA-2018:3221)).

Applying a patch is able to eliminate this problem. A possible mitigation has been published 4 months after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (104729). See 92314, 92773, 92782 and 92786 for similar entries.

Productinfo

Type

• Network Encryption Software

Name

• OpenSSL

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: 6.3
VulDB Meta Temp Score: 6.2

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 104729
Nessus Name: Fedora 26 : 1:compat-openssl10 (2017-7f30914972)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 800258
OpenVAS Name: OpenSSL OOB read Security Bypass Vulnerability (Windows)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: github.com

Timelineinfo

12/16/2016 🔍
08/28/2017 +255 days 🔍
08/28/2017 +0 days 🔍
08/28/2017 +0 days 🔍
08/28/2017 +0 days 🔍
08/29/2017 +1 days 🔍
11/22/2017 +85 days 🔍
11/22/2017 +0 days 🔍
12/16/2022 +1850 days 🔍

Sourcesinfo

Product: openssl.org

Advisory: FEDORA-2017-7f30914972
Researcher: Google's OSS-Fuzz project (OSS-Fuzz)
Organization: Google
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-3735 (🔍)
OVAL: 🔍

SecurityTracker: 1039726
SecurityFocus: 100515 - OpenSSL CVE-2017-3735 Security Bypass Vulnerability

See also: 🔍

Entryinfo

Created: 08/29/2017 10:39
Updated: 12/16/2022 19:41
Changes: 08/29/2017 10:39 (70), 11/11/2019 07:17 (13), 01/10/2021 07:34 (2), 01/10/2021 07:38 (1), 12/16/2022 19:34 (4), 12/16/2022 19:41 (1)
Complete: 🔍

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