Google Go up to 1.5.3/1.6.0 crypto/dsa/dsa.go Verify input validation

CVSS Meta Temp Score
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CTI Interest Score
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7.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Google Go up to 1.5.3/1.6.0. The affected element is the function Verify of the file crypto/dsa/dsa.go. The manipulation leads to input validation. This vulnerability is traded as CVE-2016-3959. It is possible to initiate the attack remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Google Go up to 1.5.3/1.6.0 (Programming Language Software). This issue affects the function Verify of the file crypto/dsa/dsa.go. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is availability. The summary by CVE is:

The Verify function in crypto/dsa/dsa.go in Go before 1.5.4 and 1.6.x before 1.6.1 does not properly check parameters passed to the big integer library, which might allow remote attackers to cause a denial of service (infinite loop) via a crafted public key to a program that uses HTTPS client certificates or SSH server libraries.

The weakness was shared 05/23/2016 (Website). It is possible to read the advisory at groups.google.com. The identification of this vulnerability is CVE-2016-3959 since 04/05/2016. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 90731 (Fedora 22 : golang-1.5.4-1.fc22 (2016-59c5e405e3)), 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 168860 (OpenSuSE Security Update for go (openSUSE-SU-2016:1331-1)).

Upgrading to version 1.5.4 or 1.6.1 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (90731). The entries VDB-80706 and VDB-87598 are related to this item. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 90731
Nessus Name: Fedora 22 : golang-1.5.4-1.fc22 (2016-59c5e405e3)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 864731
OpenVAS Name: Amazon Linux Local Check: alas-2016-687
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Go 1.5.4/1.6.1

Timelineinfo

04/05/2016 🔍
04/25/2016 +20 days 🔍
04/27/2016 +2 days 🔍
05/23/2016 +26 days 🔍
05/23/2016 +0 days 🔍
05/24/2016 +1 days 🔍
08/22/2022 +2281 days 🔍

Sourcesinfo

Vendor: google.com

Advisory: FEDORA-2016-59c5e405e3
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-3959 (🔍)
GCVE (CVE): GCVE-0-2016-3959
GCVE (VulDB): GCVE-100-87599
See also: 🔍

Entryinfo

Created: 05/24/2016 11:54
Updated: 08/22/2022 08:32
Changes: 05/24/2016 11:54 (64), 12/12/2018 10:11 (11), 08/22/2022 08:29 (4), 08/22/2022 08:32 (1)
Complete: 🔍
Cache ID: 216:203:103

Be aware that VulDB is the high quality source for vulnerability data.

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