GNU Guile 2.0.12 REPL Server access control

CVSS Meta Temp Score
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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
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8.4$0-$5k0.00

A vulnerability was found in GNU Guile 2.0.12. It has been declared as critical. This vulnerability affects some unknown functionality of the component REPL Server. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

The REPL server (--listen) in GNU Guile 2.0.12 allows an attacker to execute arbitrary code via an HTTP inter-protocol attack.

The bug was discovered 10/12/2016. The weakness was disclosed 01/12/2017 (Website). The advisory is shared for download at openwall.com. This vulnerability was named CVE-2016-8606 since 10/11/2016. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability was handled as a non-public zero-day exploit for at least 4 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 94771 (Fedora 25 : 5:guile (2016-0aab71f552)), 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 276209 (Fedora Security Update for guile (FEDORA-2016-a47bf58beb)).

Upgrading eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (94771) and SecurityFocus (BID 93514†). The entry VDB-95271 is pretty similar.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

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

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
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: 94771
Nessus Name: Fedora 25 : 5:guile (2016-0aab71f552)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 861338
OpenVAS Name: Fedora Update for guile FEDORA-2016-34209c3a8e
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/11/2016 🔍
10/11/2016 +0 days 🔍
10/12/2016 +1 days 🔍
10/16/2016 +4 days 🔍
11/15/2016 +30 days 🔍
01/12/2017 +58 days 🔍
01/12/2017 +0 days 🔍
01/13/2017 +1 days 🔍
10/28/2022 +2114 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: FEDORA-2016-0aab71f552
Status: Not defined

CVE: CVE-2016-8606 (🔍)
SecurityFocus: 93514 - GNU Guile CVE-2016-8606 Remote Code Execution Vulnerability
OSVDB: - CVE-2016-8606 - GNU - Guile - Code Execution Issue

See also: 🔍

Entryinfo

Created: 01/13/2017 08:12 AM
Updated: 10/28/2022 02:03 PM
Changes: 01/13/2017 08:12 AM (78), 10/28/2022 02:03 PM (3)
Complete: 🔍
Cache ID: 18:B5A:40

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