CVE-2008-5523

2008-12-1218:30:02

CWE-20

mitre

web.nvd.nist.gov

avast

antivirus

malware

detection

html

mz header

internet explorer 6

internet explorer 7

cve-2008-5523

CVSS2

9.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

AI Score

6.2

Confidence

Low

EPSS

0.972

Percentile

99.9%

JSON

avast! antivirus 4.8.1281.0, when Internet Explorer 6 or 7 is used, allows remote attackers to bypass detection of malware in an HTML document by placing an MZ header (aka “EXE info”) at the beginning, and modifying the filename to have (1) no extension, (2) a .txt extension, or (3) a .jpg extension, as demonstrated by a document containing a CVE-2006-5745 exploit.

Affected configurations

Nvd

Node

avastavast_antivirusMatch4.8.1281.0

AND

microsoftinternet_explorerMatch6

microsoftinternet_explorerMatch7

VendorProductVersionCPE
avastavast_antivirus4.8.1281.0cpe:2.3:a:avast:avast_antivirus:4.8.1281.0:*:*:*:*:*:*:*
microsoftinternet_explorer6cpe:2.3:a:microsoft:internet_explorer:6:*:*:*:*:*:*:*
microsoftinternet_explorer7cpe:2.3:a:microsoft:internet_explorer:7:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
avast	avast_antivirus	4.8.1281.0	cpe:2.3:a:avast:avast_antivirus:4.8.1281.0:::::::*
microsoft	internet_explorer	6	cpe:2.3:a:microsoft:internet_explorer:6:::::::*
microsoft	internet_explorer	7	cpe:2.3:a:microsoft:internet_explorer:7:::::::*