CVE-2008-5523
HighSummary
Antywirus avast! w wersji 4.8.1281.0, używany z Internet Explorer 6 lub 7, pozwala zdalnym atakującym na ominięcie wykrywania złośliwego oprogramowania w dokumencie HTML. Możliwe jest to poprzez umieszczenie nagłówka MZ na początku oraz modyfikację nazwy pliku, aby nie miała rozszerzenia lub miała rozszerzenie .txt lub .jpg.
Risk Assessment
Organizacja może być narażona na ataki z wykorzystaniem złośliwego oprogramowania, które nie zostanie wykryte przez antywirus, co może prowadzić do utraty danych lub kompromitacji systemów.
Recommendation
Zaleca się aktualizację oprogramowania antywirusowego do najnowszej wersji oraz monitorowanie i skanowanie wszystkich dokumentów HTML przed ich otwarciem.
Related vulnerabilities
- CVE-2026-47839Critical
A vulnerability allows users authenticating through a federated OIDC provider to obtain the uaa.admin scope despite operators restricting that provider through externalGroupsWhitelist configuration. The issue occurs specifically when an OIDC identity provider uses groupMappingMode: AS_SCOPES with a wildcard externalGroupsWhitelist entry.
- CVE-2026-14563Critical
The advanced-customized-prompts WordPress plugin through 1.0.1 does not verify the password before issuing an authenticated session for a supplied email address in an unauthenticated action, allowing unauthenticated attackers to log in as any registered user, including administrators, or to create arbitrary new accounts.
- CVE-2026-14560Critical
The teddy-bear-customize-addon WordPress plugin through 1.0.5 does not properly validate uploaded files, relying on a client-supplied content type and preserving the original filename, allowing unauthenticated attackers to upload arbitrary PHP files and execute code on the server.
- CVE-2026-14559Critical
The teddy-bear-customize-addon WordPress plugin through 1.0.5 does not verify a user's password before authenticating them, allowing unauthenticated attackers to log in as any registered user, including administrators, by supplying only that user's email address.
- CVE-2026-8778Critical
The MIPL Grouped Checkout Fields for WooCommerce plugin for WordPress (versions up to and including 1.2.1) is vulnerable to arbitrary file uploads due to missing file type validation in the `mipl_wc_upload_file` function. This allows unauthenticated attackers to upload arbitrary files to the server, potentially enabling remote code execution.
- CVE-2026-82107Critical
IBM DataStage on Cloud Pak for Data 5.4.0.0 contains an improper authentication flaw that allows a remote authenticated attacker to obtain sensitive information and bypass security restrictions.
- CVE-2026-82100Critical
IBM DataStage on Cloud Pak for Data 5.4.0.0 is vulnerable to a path traversal issue that allows a remote authenticated attacker to cause a denial of service.
- CVE-2026-81204Critical
IBM Langflow OSS versions 1.0.0 through 1.11.5 allow a remote attacker to execute arbitrary code due to code injection during graph construction.
- CVE-2026-80424Critical
IBM DataStage on Cloud Pak for Data 5.4.0.0 allows a remote authenticated attacker to create arbitrary files due to path traversal during archive extraction.
- CVE-2026-79724Critical
IBM Langflow OSS versions 1.0.0 through 1.11.5 allow a remote attacker to execute arbitrary OS commands due to improper neutralization of special elements used in an OS command.
Original NVD description (English source)
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.