Ahnlab V3 Internet Security: security vulnerability (CVE-2012-1443)
Published Sources: CVE.org
What is affected, what to do
The RAR file parser in ClamAV 0.96.4, Rising Antivirus 22.83.00.03, Quick Heal (aka Cat QuickHeal) 11.00, G Data AntiVirus 21, AVEngine 20101.3.0.103 in Symantec Endpoint Protection 11, Command Antivirus 5.2.11.5, Ikarus Virus Utilities T3 Command Line Scanner 1.1.97.0, Emsisoft Anti-Malware 5.1.0.1, PC Tools AntiVirus 7.0.3.5, F-Prot Antivirus 4.6.2.117, VirusBuster 13.6.151.0, Fortinet Antivirus 4.2.254.0, Antiy Labs AVL SDK 2.0.3.7, K7 AntiVirus 9.77.3565, Trend Micro HouseCall 9.120.0.1004, Kaspersky Anti-Virus 7.0.0.125, Jiangmin Antivirus 13.0.900, Antimalware Engine 1.1.6402.0 in Microsoft Security Essentials 2.0, Sophos Anti-Virus 4.61.0, NOD32 Antivirus 5795, Avira AntiVir 7.11.1.163, Norman Antivirus 6.06.12, McAfee Anti-Virus Scanning Engine 5.400.0.1158, Panda Antivirus 10.0.2.7, McAfee Gateway (formerly Webwasher) 2010.1C, Trend Micro AntiVirus 9.120.0.1004, Comodo Antivirus 7424, Bitdefender 7.2, eSafe 7.0.17.0, F-Secure Anti-Virus 9.0.16160.0, nProtect Anti-Virus 2011-01-17.01, AhnLab V3 Internet Security 2011.01.18.00, AVG Anti-Virus 10.0.0.1190, avast! Antivirus 4.8.1351.0 and 5.0.677.0, and VBA32 3.12.14.2 allows user-assisted remote attackers to bypass malware detection via a RAR file with an initial MZ character sequence.
The available sources name no fixed version. Check the vendor guidance in the references below.
- Affected
- Pc Tools Antivirus
eq 7.0.3.5..7.0.3.5 - rising-global Rising Antivirus
eq 22.83.00.03..22.83.00.03 - Sophos Sophos Anti-Virus
eq 4.61.0..4.61.0 - Symantec Endpoint Protection (Mac Client)
eq 11.0..11.0 - Trend Micro Housecall
eq 9.120.0.1004..9.120.0.1004 - Trend Micro Antivirus
eq 9.120.0.1004..9.120.0.1004 - Virusbuster
eq 13.6.151.0..13.6.151.0 - Ahnlab V3 Internet Security
eq 2011.01.18.00..2011.01.18.00 - Aladdin Esafe
eq 7.0.17.0..7.0.17.0 - Alwil Avast Antivirus
eq 4.8.1351.0..4.8.1351.0 - Alwil Avast Antivirus
eq 5.0.677.0..5.0.677.0 - Anti-virus Vba32
eq 3.12.14.2..3.12.14.2 - Antiy Avl SDK
eq 2.0.3.7..2.0.3.7 - Authentium Command Antivirus
eq 5.2.11.5..5.2.11.5 - Avg Anti-virus
eq 10.0.0.1190..10.0.0.1190 - Avira Antivir
eq 7.11.1.163..7.11.1.163 - Bitdefender
eq 7.2..7.2 - CAT Quick Heal
eq 11.00..11.00 - Cisco ClamAV
eq 0.96.4..0.96.4 - Comodo Antivirus
eq 7424..7424 - EMSISOFT Anti-Malware
eq 5.1.0.1..5.1.0.1 - ESET Nod32 Antivirus
eq 5795..5795 - F-Prot F-Prot Antivirus
eq 4.6.2.117..4.6.2.117 - F-secure Anti-virus
eq 9.0.16160.0..9.0.16160.0 - Fortinet Antivirus
eq 4.2.254.0..4.2.254.0 - G Data Antivirus
eq 21..21 - Ikarus Virus Utilities T3 Command Line Scanner
eq 1.1.97.0..1.1.97.0 - Jiangmin Antivirus
eq 13.0.900..13.0.900 - K7 Computing AntiVirus
eq 9.77.3565..9.77.3565 - Kaspersky Anti-Virus
eq 7.0.0.125..7.0.0.125 - McAfee Gateway
eq 2010.1c..2010.1c - McAfee McAfee Scan Engine
eq 5.400.0.1158..5.400.0.1158 - Microsoft Security Essentials
eq 2.0..2.0 - Norman Antivirus & Antispyware
eq 6.06.12..6.06.12 - Nprotect Antivirus
eq 2011-01-17.01..2011-01-17.01 - Pandasecurity Panda Antivirus
eq 10.0.2.7..10.0.2.7
- Pc Tools Antivirus
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Metrics
—
Priority
No value is available for this vulnerability.
—
CVSS v3
No value is available for this vulnerability.
99.64 %
EPSS score
High — model estimates ≥ 50% chance of real-world exploitation within 30 days.
Source: FIRST EPSS, percentile 99.95
Show all metrics
- Severity
- Not rated
Priority (0–325)
The priority score is a consolidated metric that condenses several individual signals into a single, action-guiding ranking: technical severity (CVSS), exploitation likelihood (EPSS), known-exploited status (KEV) and the context of the affected asset. The aim is to answer the only truly important question in vulnerability management: what first?
Read in glossary- 79.92 Methodology
Exploit maturity
An exploit is code or a technique that specifically uses a concrete vulnerability to force unintended behaviour — such as executing code or escalating privileges. It is the tool that turns a theoretical flaw into a practical attack.
Read in glossary- no public PoC known
EPSS score
The EPSS score is the absolute model output for an individual vulnerability: the estimated probability of real-world exploitation within the next 30 days, expressed as a value between 0 and 1 (i.e. 0 % to 100 %). A score of 0.42 means „the model estimates a 42 % chance of real-world exploitation within 30 days“.
Read in glossary- 99.64 %
- High — model estimates ≥ 50% chance of real-world exploitation within 30 days.
EPSS percentile
The EPSS percentile is the relative position of a vulnerability within all EPSS-scored CVEs, expressed as a value between 0 and 1. A percentile of 0.90 means „this CVE has a higher EPSS score than 90 % of all other scored CVEs“. Unlike the EPSS score, it is not a probability — but a positioning within a ranking.
Read in glossary- 99.95
- Critical — this CVE ranks in the top fifth of all CVEs scored today (rank ≥ 80%).
KEV status
The KEV catalogue is a list maintained by the US authority CISA of vulnerabilities for which active exploitation in the wild has been confirmed. It answers not the question „how severe?“ but „is it already being attacked?“ — thereby sharply prioritising patching.
Read in glossary- —
- Published
Detection rules
No NEOSEC detection rule is available for this vulnerability yet.
Classification under NIS2 and CRA
Rule-based classification from exploitation status and severity. It does not replace a case-by-case assessment.
NIS2
NIS2 is EU Directive (EU) 2022/2555 to raise the level of cybersecurity across the Union. It substantially broadens obligations compared with the first NIS directive: more sectors, mandatory risk management, staged reporting duties and personal accountability of senior management.
Read in glossary- Handle the vulnerability in regular vulnerability handling under Art. 21(2)(e) NIS2.
CRA
The CRA is EU Regulation (EU) 2024/2847 setting horizontal cybersecurity requirements for „products with digital elements“ — from industrial controllers and software to connected consumer devices. For the first time manufacturers must ensure security across the entire product lifecycle, handle vulnerabilities and provide security updates.
Read in glossary- From 11.12.2027, Annex I Part II CRA requires manufacturers of affected products with digital elements to handle vulnerabilities without delay and provide security updates.
ISO/IEC 27001
ISO/IEC 27001 is the internationally leading standard for an information security management system (ISMS). It describes a risk-based, process-oriented framework to systematically plan, implement, review and improve information security.
Read in glossary- Control A.8.8, management of technical vulnerabilities: assess relevance to your systems, plan remediation and keep evidence.
Description
The RAR file parser in ClamAV 0.96.4, Rising Antivirus 22.83.00.03, Quick Heal (aka Cat QuickHeal) 11.00, G Data AntiVirus 21, AVEngine 20101.3.0.103 in Symantec Endpoint Protection 11, Command Antivirus 5.2.11.5, Ikarus Virus Utilities T3 Command Line Scanner 1.1.97.0, Emsisoft Anti-Malware 5.1.0.1, PC Tools AntiVirus 7.0.3.5, F-Prot Antivirus 4.6.2.117, VirusBuster 13.6.151.0, Fortinet Antivirus 4.2.254.0, Antiy Labs AVL SDK 2.0.3.7, K7 AntiVirus 9.77.3565, Trend Micro HouseCall 9.120.0.1004, Kaspersky Anti-Virus 7.0.0.125, Jiangmin Antivirus 13.0.900, Antimalware Engine 1.1.6402.0 in Microsoft Security Essentials 2.0, Sophos Anti-Virus 4.61.0, NOD32 Antivirus 5795, Avira AntiVir 7.11.1.163, Norman Antivirus 6.06.12, McAfee Anti-Virus Scanning Engine 5.400.0.1158, Panda Antivirus 10.0.2.7, McAfee Gateway (formerly Webwasher) 2010.1C, Trend Micro AntiVirus 9.120.0.1004, Comodo Antivirus 7424, Bitdefender 7.2, eSafe 7.0.17.0, F-Secure Anti-Virus 9.0.16160.0, nProtect Anti-Virus 2011-01-17.01, AhnLab V3 Internet Security 2011.01.18.00, AVG Anti-Virus 10.0.0.1190, avast! Antivirus 4.8.1351.0 and 5.0.677.0, and VBA32 3.12.14.2 allows user-assisted remote attackers to bypass malware detection via a RAR file with an initial MZ character sequence. NOTE: this may later be SPLIT into multiple CVEs if additional information is published showing that the error occurred independently in different RAR parser implementations.
Source: NVD (NIST), cvelistv5
Affected products
The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.
| Affected versions | Fixed in | ||
|---|---|---|---|
| ahnlab | v3_internet_security |
|
|
| aladdin | esafe |
|
|
| alwil | avast_antivirus |
|
|
| anti-virus | vba32 |
|
|
| antiy | avl_sdk |
|
|
| authentium | command_antivirus |
|
|
| avg | avg_anti-virus |
|
|
| avira | antivir |
|
|
| bitdefender | bitdefender |
|
|
| cat | quick_heal |
|
|
| clamav | clamav |
|
|
| comodo | comodo_antivirus |
|
|
| emsisoft | anti-malware |
|
|
| eset | nod32_antivirus |
|
|
| f-prot | f-prot_antivirus |
|
|
| f-secure | f-secure_anti-virus |
|
|
| fortinet | fortinet_antivirus |
|
|
| gdata-software | g_data_antivirus |
|
|
| ikarus | ikarus_virus_utilities_t3_command_line_scanner |
|
|
| jiangmin | jiangmin_antivirus |
|
|
| k7computing | antivirus |
|
|
| kaspersky | kaspersky_anti-virus |
|
|
| mcafee | gateway |
|
|
| mcafee | scan_engine |
|
|
| microsoft | security_essentials |
|
|
| norman | norman_antivirus_\&_antispyware |
|
|
| nprotect | nprotect_antivirus |
|
|
| pandasecurity | panda_antivirus |
|
|
| pc_tools | pc_tools_antivirus |
|
|
| rising-global | rising_antivirus |
|
|
| sophos | sophos_anti-virus |
|
|
| symantec | endpoint_protection |
|
|
| trendmicro | housecall |
|
|
| trendmicro | trend_micro_antivirus |
|
|
| virusbuster | virusbuster |
|
|
Vendors and products
References & sources
- osvdb.org80472Vulnerability database, x_refsource_OSVDB
- securityfocus.com20120319 Evasion attacks expoliting file-parsing vulnerabilities in antivirus productsMailing list, x_refsource_BUGTRAQ
- securityfocus.com52612Vulnerability database, x_refsource_BID
- osvdb.org80467Vulnerability database, x_refsource_OSVDB
- osvdb.org80461Vulnerability database, x_refsource_OSVDB
- osvdb.org80470Vulnerability database, x_refsource_OSVDB
- osvdb.org80460Vulnerability database, x_refsource_OSVDB
- ieee-security.orgTC/SP2012/program.htmlx_refsource_MISC
- osvdb.org80468Vulnerability database, x_refsource_OSVDB
- osvdb.org80456Vulnerability database, x_refsource_OSVDB
- osvdb.org80457Vulnerability database, x_refsource_OSVDB
- osvdb.org80458Vulnerability database, x_refsource_OSVDB
- osvdb.org80454Vulnerability database, x_refsource_OSVDB
- osvdb.org80455Vulnerability database, x_refsource_OSVDB
- osvdb.org80459Vulnerability database, x_refsource_OSVDB
- osvdb.org80469Vulnerability database, x_refsource_OSVDB
- osvdb.org80471Vulnerability database, x_refsource_OSVDB
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<a href="https://intel.neosec.eu/en/cve/CVE-2012-1443"><img src="https://intel.neosec.eu/badge/cve/CVE-2012-1443.svg?lang=en" alt="CVE-2012-1443 – NEOSEC Intel" height="20"></a>