ClamAV Antivirus Software up to 0.99.2 PDF File pdf.c handle_pdfname memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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7.4$0-$5k0.00

Summaryinfo

A vulnerability was found in ClamAV Antivirus Software up to 0.99.2. It has been rated as critical. This affects the function handle_pdfname of the file pdf.c of the component PDF File Handler. This manipulation causes memory corruption. This vulnerability appears as CVE-2017-12376. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical was found in ClamAV Antivirus Software up to 0.99.2 (Anti-Malware Software). Affected by this vulnerability is the function handle_pdfname of the file pdf.c of the component PDF File Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

ClamAV AntiVirus software versions 0.99.2 and prior contain a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition or potentially execute arbitrary code on an affected device. The vulnerability is due to improper input validation checking mechanisms when handling Portable Document Format (.pdf) files sent to an affected device. An unauthenticated, remote attacker could exploit this vulnerability by sending a crafted .pdf file to an affected device. This action could cause a handle_pdfname (in pdf.c) buffer overflow when ClamAV scans the malicious file, allowing the attacker to cause a DoS condition or potentially execute arbitrary code.

The bug was discovered 01/25/2018. The weakness was presented 01/26/2018 (Website). It is possible to read the advisory at blog.clamav.net. This vulnerability is known as CVE-2017-12376 since 08/03/2017. 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 was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 106431 (openSUSE Security Update : clamav (openSUSE-2018-102)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 170721 (SUSE Enterprise Linux Security Update for clamav (SUSE-SU-2018:0255-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 days after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (106431). See VDB-104894, VDB-112481, VDB-112482 and VDB-112484 for similar entries. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
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: Memory corruption
CWE: 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: 106431
Nessus Name: openSUSE Security Update : clamav (openSUSE-2018-102)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 15485
OpenVAS Name: ClamAV messageAddArgument Multiple Vulnerabilities (Windows)
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: 🔍

Timelineinfo

08/03/2017 🔍
01/25/2018 +175 days 🔍
01/26/2018 +1 days 🔍
01/26/2018 +0 days 🔍
01/27/2018 +1 days 🔍
01/28/2018 +1 days 🔍
01/29/2018 +1 days 🔍
02/02/2023 +1830 days 🔍

Sourcesinfo

Advisory: USN-3550-1
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-12376 (🔍)
GCVE (CVE): GCVE-0-2017-12376
GCVE (VulDB): GCVE-100-112483
See also: 🔍

Entryinfo

Created: 01/27/2018 09:44
Updated: 02/02/2023 18:20
Changes: 01/27/2018 09:44 (76), 12/28/2019 08:29 (4), 02/02/2023 18:20 (4)
Complete: 🔍
Cache ID: 216::103

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

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