Veritas Backup Exec up to 14.1 Agents use after free

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 labeled as critical has been found in Veritas Backup Exec up to 14.1. This affects an unknown function of the component Agents. The manipulation results in use after free. This vulnerability is identified as CVE-2017-8895. The attack can be executed remotely. Additionally, an exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Veritas Backup Exec up to 14.1 (Backup Software). It has been classified as critical. Affected is an unknown part of the component Agents. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

In Veritas Backup Exec 2014 before build 14.1.1187.1126, 15 before build 14.2.1180.3160, and 16 before FP1, there is a use-after-free vulnerability in multiple agents that can lead to a denial of service or remote code execution. An authenticated attacker can use this vulnerability to crash the agent or potentially take control of the agent process and then the system it is running on.

The bug was discovered 05/10/2017. The weakness was released 05/10/2017 by Matthew Daley (Website). The advisory is shared for download at veritas.com. This vulnerability is traded as CVE-2017-8895 since 05/10/2017. 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 unknown but a public exploit is available.

The exploit is shared for download at exploit-db.com. It is declared as highly functional. The vulnerability scanner Nessus provides a plugin with the ID 101294 (Veritas Backup Exec Remote Agent 14.1.x < 14.1.1786.1126 / 14.2.x < 14.2.1180.3160 / 16.0.x < 16.0.1142.1327 Use-after-free RCE (VTS17-006)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows and running in the context l.

Upgrading to version 14.2.1180.3160 or 14.1.1187.1126 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (42282), Tenable (101294), SecurityFocus (BID 98386†) and SecurityTracker (ID 1038561†). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

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: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Highly functional
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 101294
Nessus Name: Veritas Backup Exec Remote Agent 14.1.x < 14.1.1786.1126 / 14.2.x < 14.2.1180.3160 / 16.0.x < 16.0.1142.1327 Use-after-free RCE (VTS17-006)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

MetaSploit ID: ssl_uaf.rb
MetaSploit Name: Veritas/Symantec Backup Exec SSL NDMP Connection Use-After-Free
MetaSploit File: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: Backup Exec 14.2.1180.3160/14.1.1187.1126

Timelineinfo

05/10/2017 🔍
05/10/2017 +0 days 🔍
05/10/2017 +0 days 🔍
05/10/2017 +0 days 🔍
05/10/2017 +0 days 🔍
05/10/2017 +0 days 🔍
05/11/2017 +1 days 🔍
05/25/2017 +14 days 🔍
07/07/2017 +43 days 🔍
10/03/2020 +1184 days 🔍

Sourcesinfo

Advisory: veritas.com
Researcher: Matthew Daley
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-8895 (🔍)
GCVE (CVE): GCVE-0-2017-8895
GCVE (VulDB): GCVE-100-101076
SecurityFocus: 98386 - Veritas Backup Exec Use After Free Remote Code Execution Vulnerability
OSVDB: - CVE-2017-8895 - Veritas - Backup Exec - High
SecurityTracker: 1038561

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 05/11/2017 12:52
Updated: 10/03/2020 12:13
Changes: 05/11/2017 12:52 (76), 10/03/2020 12:13 (10)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source 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!