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Vulnerability Assessment

Weakness
CWE
ASVS 5.0
V8 - Authorization Permission and access control
MITRE ATT&CK

1 technique across 1 tactic: Privilege Escalation

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

CVSS score of 4.3 (MEDIUM). Attack characteristics: network attack vector, M complexity. EPSS exploitation probability: 79.55%.

Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the medium-severity affected system.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 79.5% exploitation probability (EPSS)

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AnalysisAI

The TAR file parser in AhnLab V3 Internet Security 2011.01.18.00, Avira AntiVir 7.11.1.163, Antiy Labs AVL SDK 2.0.3.7, avast!. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable. Epss exploitation probability 79.5% and no vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified under CWE-264. The TAR file parser in AhnLab V3 Internet Security 2011.01.18.00, Avira AntiVir 7.11.1.163, Antiy Labs AVL SDK 2.0.3.7, avast! Antivirus 4.8.1351.0 and 5.0.677.0, AVG Anti-Virus 10.0.0.1190, Bitdefender 7.2, Quick Heal (aka Cat QuickHeal) 11.00, ClamAV 0.96.4, Command Antivirus 5.2.11.5, Comodo Antivirus 7424, Emsisoft Anti-Malware 5.1.0.1, F-Prot Antivirus 4.6.2.117, F-Secure Anti-Virus 9.0.16160.0, Fortinet Antivirus 4.2.254.0, G Data AntiVirus 21, Ikarus Virus Utilities T3 Command Line Scanner 1.1.97.0, Jiangmin Antivirus 13.0.900, K7 AntiVirus 9.77.3565, Kaspersky Anti-Virus 7.0.0.125, McAfee Anti-Virus Scanning Engine 5.400.0.1158, McAfee Gateway (formerly Webwasher) 2010.1C, Antimalware Engine 1.1.6402.0 in Microsoft Security Essentials 2.0, NOD32 Antivirus 5795, Norman Antivirus 6.06.12, nProtect Anti-Virus 2011-01-17.01, Panda Antivirus 10.0.2.7, PC Tools AntiVirus 7.0.3.5, Rising Antivirus 22.83.00.03, Sophos Anti-Virus 4.61.0, AVEngine 20101.3.0.103 in Symantec Endpoint Protection 11, Trend Micro AntiVirus 9.120.0.1004, Trend Micro HouseCall 9.120.0.1004, VBA32 3.12.14.2, and VirusBuster 13.6.151.0 allows remote attackers to bypass malware detection via a TAR archive entry with a length field corresponding to that entire entry, plus part of the header of the next entry. NOTE: this may later be SPLIT into multiple CVEs if additional information is published showing that the error occurred independently in different TAR parser implementations. Affected products include: Ahnlab V3 Internet Security, Alwil Avast Antivirus, Anti-Virus Vba32, Antiy Avl Sdk, Authentium Command Antivirus.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 4.3 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
M
Confidentiality
None
Integrity
P
Availability
None

DescriptionCVE.org

The TAR file parser in AhnLab V3 Internet Security 2011.01.18.00, Avira AntiVir 7.11.1.163, Antiy Labs AVL SDK 2.0.3.7, avast! Antivirus 4.8.1351.0 and 5.0.677.0, AVG Anti-Virus 10.0.0.1190, Bitdefender 7.2, Quick Heal (aka Cat QuickHeal) 11.00, ClamAV 0.96.4, Command Antivirus 5.2.11.5, Comodo Antivirus 7424, Emsisoft Anti-Malware 5.1.0.1, F-Prot Antivirus 4.6.2.117, F-Secure Anti-Virus 9.0.16160.0, Fortinet Antivirus 4.2.254.0, G Data AntiVirus 21, Ikarus Virus Utilities T3 Command Line Scanner 1.1.97.0, Jiangmin Antivirus 13.0.900, K7 AntiVirus 9.77.3565, Kaspersky Anti-Virus 7.0.0.125, McAfee Anti-Virus Scanning Engine 5.400.0.1158, McAfee Gateway (formerly Webwasher) 2010.1C, Antimalware Engine 1.1.6402.0 in Microsoft Security Essentials 2.0, NOD32 Antivirus 5795, Norman Antivirus 6.06.12, nProtect Anti-Virus 2011-01-17.01, Panda Antivirus 10.0.2.7, PC Tools AntiVirus 7.0.3.5, Rising Antivirus 22.83.00.03, Sophos Anti-Virus 4.61.0, AVEngine 20101.3.0.103 in Symantec Endpoint Protection 11, Trend Micro AntiVirus 9.120.0.1004, Trend Micro HouseCall 9.120.0.1004, VBA32 3.12.14.2, and VirusBuster 13.6.151.0 allows remote attackers to bypass malware detection via a TAR archive entry with a length field corresponding to that entire entry, plus part of the header of the next entry. NOTE: this may later be SPLIT into multiple CVEs if additional information is published showing that the error occurred independently in different TAR parser implementations.

Threat Intelligence Overview

EPSS Score
79.5%
Top 1% exploitable
Data Quality
3 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 79.5%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

102
Low Medium High Critical
KEV: 0
EPSS: +80
CVSS: +22
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Privilege escalation occurs when an attacker leverages flaws in access control mechanisms to gain permissions beyond what they were originally granted.

Affected Products (CPE)CVE.org

cpe:2.3:a:ahnlab:v3_internet_security:2011.01.18.00:*:*:*:*:*:*:*
cpe:2.3:a:alwil:avast_antivirus:4.8.1351.0:*:*:*:*:*:*:*
cpe:2.3:a:alwil:avast_antivirus:5.0.677.0:*:*:*:*:*:*:*
cpe:2.3:a:anti-virus:vba32:3.12.14.2:*:*:*:*:*:*:*
cpe:2.3:a:antiy:avl_sdk:2.0.3.7:*:*:*:*:*:*:*
cpe:2.3:a:authentium:command_antivirus:5.2.11.5:*:*:*:*:*:*:*
cpe:2.3:a:avg:avg_anti-virus:10.0.0.1190:*:*:*:*:*:*:*
cpe:2.3:a:avira:antivir:7.11.1.163:*:*:*:*:*:*:*
cpe:2.3:a:bitdefender:bitdefender:7.2:*:*:*:*:*:*:*
cpe:2.3:a:cat:quick_heal:11.00:*:*:*:*:*:*:*
cpe:2.3:a:clamav:clamav:0.96.4:*:*:*:*:*:*:*
cpe:2.3:a:comodo:comodo_antivirus:7424:*:*:*:*:*:*:*
cpe:2.3:a:emsisoft:anti-malware:5.1.0.1:*:*:*:*:*:*:*
cpe:2.3:a:eset:nod32_antivirus:5795:*:*:*:*:*:*:*
cpe:2.3:a:f-prot:f-prot_antivirus:4.6.2.117:*:*:*:*:*:*:*
cpe:2.3:a:f-secure:f-secure_anti-virus:9.0.16160.0:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortinet_antivirus:4.2.254.0:*:*:*:*:*:*:*
cpe:2.3:a:gdata-software:g_data_antivirus:21:*:*:*:*:*:*:*
cpe:2.3:a:ikarus:ikarus_virus_utilities_t3_command_line_scanner:1.1.97.0:*:*:*:*:*:*:*
cpe:2.3:a:jiangmin:jiangmin_antivirus:13.0.900:*:*:*:*:*:*:*
+ 15 more

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