Cisco ClamAV 0.99.3 XAR Parser xar_hash_check out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability was found in Cisco ClamAV 0.99.3 and classified as critical. The impacted element is the function xar_hash_check of the component XAR Parser. Such manipulation leads to out-of-bounds. This vulnerability is referenced as CVE-2018-1000085. The attack can only be performed from a local environment. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Cisco ClamAV 0.99.3 (Anti-Malware Software) and classified as critical. Affected by this issue is the function xar_hash_check of the component XAR Parser. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

ClamAV version version 0.99.3 contains a Out of bounds heap memory read vulnerability in XAR parser, function xar_hash_check() that can result in Leaking of memory, may help in developing exploit chains.. This attack appear to be exploitable via The victim must scan a crafted XAR file. This vulnerability appears to have been fixed in after commit d96a6b8bcc7439fa7e3876207aa0a8e79c8451b6.

The bug was discovered 09/29/2017. The weakness was published 03/13/2018 with Qihoo 360 Vulcan Team (oss-sec). The advisory is shared for download at openwall.com. This vulnerability is handled as CVE-2018-1000085 since 02/21/2018. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 165 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 108415 (Debian DLA-1307-1 : clamav 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 197076 (Ubuntu Security Notification for Clamav Vulnerabilities (USN-3592-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 3 days after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (108415) and SecurityFocus (BID 103603†). Similar entries are available at VDB-110554, VDB-113070, VDB-113073 and VDB-114085. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

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

NVD Base Score: 5.5
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: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 108415
Nessus Name: Debian DLA-1307-1 : clamav security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 802808
OpenVAS Name: Debian LTS Advisory ([SECURITY] [DLA 1307-1] clamav security update)
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: 🔍

Patch: github.com

Timelineinfo

09/29/2017 🔍
02/21/2018 +145 days 🔍
03/13/2018 +20 days 🔍
03/13/2018 +0 days 🔍
03/14/2018 +1 days 🔍
03/16/2018 +2 days 🔍
03/19/2018 +3 days 🔍
04/10/2018 +22 days 🔍
02/21/2023 +1778 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: d96a6b8bcc7439fa7e3876207aa0a8e79c8451b6
Organization: Qihoo 360 Vulcan Team
Status: Confirmed

CVE: CVE-2018-1000085 (🔍)
GCVE (CVE): GCVE-0-2018-1000085
GCVE (VulDB): GCVE-100-114440
SecurityFocus: 103603 - Microsoft Internet Explorer Scripting Engine CVE-2018-1000 Information Disclosure Vulnerability

See also: 🔍

Entryinfo

Created: 03/14/2018 07:48
Updated: 02/21/2023 14:45
Changes: 03/14/2018 07:48 (76), 06/08/2020 17:57 (6), 02/21/2023 14:41 (5), 02/21/2023 14:45 (1)
Complete: 🔍
Cache ID: 216:8A7:103

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