VDB-100641 · CVE-2017-8307 · BID 98086

Avast Antivirus up to 16 on Windows LPC Interface API AvastSVC.exe 7pk security

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Avast Antivirus up to 16 on Windows. This affects an unknown part of the file AvastSVC.exe of the component LPC Interface API. Performing a manipulation results in 7pk security. This vulnerability is identified as CVE-2017-8307. The attack is only possible with local access. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Avast Antivirus up to 16 on Windows (Anti-Malware Software). This affects some unknown functionality of the file AvastSVC.exe of the component LPC Interface API. The manipulation with an unknown input leads to a 7pk security vulnerability. CWE is classifying the issue as CWE-254. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

In Avast Antivirus before v17, using the LPC interface API exposed by the AvastSVC.exe Windows service, it is possible to launch predefined binaries, or replace or delete arbitrary files. This vulnerability is exploitable by any unprivileged user when Avast Self-Defense is disabled. It is also exploitable in conjunction with CVE-2017-8308 when Avast Self-Defense is enabled. The vulnerability allows for Denial of Service attacks and hiding traces of a possible attack.

The bug was discovered 03/31/2017. The weakness was released 04/27/2017 by Martin (Website). The advisory is shared at trustwave.com. This vulnerability is uniquely identified as CVE-2017-8307 since 04/27/2017. An attack has to be approached locally. A authentication is required for exploitation. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1211 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 27 days. During that time the estimated underground price was around $5k-$25k.

Upgrading to version 17 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 98086†). Entry connected to this vulnerability is available at VDB-100642. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: 7pk security
CWE: CWE-254
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

OpenVAS ID: 801111
OpenVAS Name: Avast Pro Antivirus Multiple Vulnerabilities
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Antivirus 17

Timelineinfo

03/31/2017 🔍
04/27/2017 +27 days 🔍
04/27/2017 +0 days 🔍
04/27/2017 +0 days 🔍
04/27/2017 +0 days 🔍
04/28/2017 +1 days 🔍
12/21/2020 +1333 days 🔍

Sourcesinfo

Advisory: trustwave.com
Researcher: Martin Rakhmanov (Martin)
Status: Not defined

CVE: CVE-2017-8307 (🔍)
GCVE (CVE): GCVE-0-2017-8307
GCVE (VulDB): GCVE-100-100641
SecurityFocus: 98086 - Avast! Antivirus CVE-2017-8307 Arbitrary File Deletion Vulnerability
OSVDB: - CVE-2017-8307 - Avast - Antivirus - High

See also: 🔍

Entryinfo

Created: 04/28/2017 20:18
Updated: 12/21/2020 16:10
Changes: 04/28/2017 20:18 (70), 09/21/2020 16:50 (4), 12/21/2020 16:10 (2)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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