VIM up to 8.0 unserialize_uep integer overflow

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.
8.2$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in VIM up to 8.0. This impacts the function unserialize_uep. This manipulation causes integer overflow. This vulnerability is registered as CVE-2017-6350. Remote exploitation of the attack is possible. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in VIM up to 8.0 (Word Processing Software). It has been declared as critical. Affected by this vulnerability is the function unserialize_uep. The manipulation with an unknown input leads to a integer overflow vulnerability. The CWE definition for the vulnerability is CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

An integer overflow at an unserialize_uep memory allocation site would occur for vim before patch 8.0.0378, if it does not properly validate values for tree length when reading a corrupted undo file, which may lead to resultant buffer overflows.

The bug was discovered 03/03/2017. The weakness was published 02/27/2017 by Hao Sun (Website). It is possible to read the advisory at github.com. This vulnerability is known as CVE-2017-6350 since 02/26/2017. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 97641 (Debian DLA-850-1 : vim security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 170130 (SUSE Enterprise Linux Security Update for vim (SUSE-SU-2017:1712-1)).

Upgrading to version 8.0.0378 eliminates this vulnerability. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (97641), SecurityFocus (BID 96448†) and SecurityTracker (ID 1037949†). Similar entry is available at VDB-97314. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

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

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 97641
Nessus Name: Debian DLA-850-1 : vim security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for vim FEDORA-2017-e9171a0c00
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: VIM 8.0.0378

Timelineinfo

02/26/2017 🔍
02/27/2017 +1 days 🔍
02/27/2017 +0 days 🔍
02/27/2017 +0 days 🔍
02/27/2017 +0 days 🔍
03/03/2017 +4 days 🔍
03/03/2017 +0 days 🔍
03/09/2017 +6 days 🔍
03/10/2017 +1 days 🔍
08/18/2020 +1257 days 🔍

Sourcesinfo

Product: github.com

Advisory: github.com
Researcher: Hao Sun
Status: Confirmed

CVE: CVE-2017-6350 (🔍)
GCVE (CVE): GCVE-0-2017-6350
GCVE (VulDB): GCVE-100-97315
SecurityFocus: 96448 - Vim CVE-2017-6350 Local Integer Overflow Vulnerability
OSVDB: - CVE-2017-6350 - vim - Integer Overflow Issue
SecurityTracker: 1037949

See also: 🔍

Entryinfo

Created: 02/27/2017 21:07
Updated: 08/18/2020 10:25
Changes: 02/27/2017 21:07 (80), 08/18/2020 10:25 (5)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you need the next level of professionalism?

Upgrade your account now!