VIM up to 8.0 u_read_undo integer overflow

CVSS Meta Temp Score
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CTI Interest Score
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8.2$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in VIM up to 8.0. This affects the function u_read_undo. The manipulation results in integer overflow. This vulnerability is cataloged as CVE-2017-6349. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in VIM up to 8.0 (Word Processing Software). It has been classified as critical. Affected is the function u_read_undo. The manipulation with an unknown input leads to a integer overflow vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

An integer overflow at a u_read_undo memory allocation site would occur for vim before patch 8.0.0377, 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 shared 02/27/2017 by Hao Sun (Website). The advisory is available at github.com. This vulnerability is traded as CVE-2017-6349 since 02/26/2017. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details 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 276502 (Fedora Security Update for vim (FEDORA-2017-e9171a0c00)).

Upgrading to version 8.0.0377 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 96451†) and SecurityTracker (ID 1037949†). The entry VDB-97315 is related to this item. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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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

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 🔍

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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 8.0.0377

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-2017-6349 (🔍)
GCVE (CVE): GCVE-0-2017-6349
GCVE (VulDB): GCVE-100-97314
SecurityFocus: 96451 - Vim CVE-2017-6349 Local Integer Overflow Vulnerability
OSVDB: - CVE-2017-6349 - vim - Integer Overflow Issue
SecurityTracker: 1037949

See also: 🔍

Entryinfo

Created: 02/27/2017 21:07
Updated: 08/18/2020 10:33
Changes: 02/27/2017 21:07 (80), 08/18/2020 10:33 (5)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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