CVE-2016-20047
HighSummary
EKG Gadu w wersji 1.9~pre+r2855-3+b1 zawiera lokalną podatność na przepełnienie bufora w obsłudze nazwy użytkownika, która pozwala lokalnym atakującym na wykonanie dowolnego kodu poprzez dostarczenie zbyt dużego ciągu znaków jako nazwy użytkownika. Atakujący mogą wywołać przepełnienie w funkcji strlcpy, przekazując przygotowany bufor przekraczający 258 bajtów.
Risk Assessment
Podatność ta stwarza ryzyko wykonania złośliwego kodu przez lokalnych atakujących, co może prowadzić do przejęcia kontroli nad systemem z uprawnieniami użytkownika. Może to skutkować poważnymi konsekwencjami dla bezpieczeństwa danych i integralności systemu.
Recommendation
Zaleca się aktualizację EKG Gadu do najnowszej wersji, która eliminuje tę podatność. Dodatkowo, należy ograniczyć dostęp do systemu tylko do zaufanych użytkowników.
Related vulnerabilities
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- CVE-2026-90608Critical
A buffer overflow vulnerability was found in Totolink A3002MU version Hh-B20211125.1046, in the formPortFw function of /boafrm/formPortFw (boa component). Manipulating the service_type argument causes the overflow. The attack can be initiated remotely and the exploit has been published.
- CVE-2026-90607Critical
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- CVE-2026-81648Critical
The CryptoPayment Gateway WordPress plugin from 1.2.1 to 1.2.2 does not apply an authorization check on one of its AJAX endpoints, allowing unauthenticated users to invoke administrative operations, including deleting arbitrary files on the server, overwriting the payment gateway configuration and recovering stored wallet credentials in cleartext.
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The Events Calendar plugin for WordPress in all versions up to and including 6.17.3 is vulnerable to Remote Code Execution via the parse_array function. Insufficient validation of the widget 'classes' map allows a plain-array payload to bypass the is_safe_widget_instance() object check and reach the callable-invocation sink in Element_Classes::parse_array(). This enables unauthenticated attackers to execute code on the server, provided comments are enabled on tribe_events posts and at least one comment containing a crafted wp:legacy-widget block has been submitted.
- CVE-2026-78006Critical
The Events Calendar plugin for WordPress in all versions up to and including 6.17.4 is vulnerable to Remote Code Execution via the is_safe_widget_instance function. Insufficient protection in is_safe_widget_instance can be bypassed because PHP fires magic methods during its pre-parse, combined with enable_rendering_widget_copied() forging a valid wp_hash integrity attribute before unserialize() is reached. This enables unauthenticated attackers to execute code on the server, as the plugin's V2 single-event template runs do_blocks() over buffered comment HTML and WordPress returns a moderation-hash URL allowing an unauthenticated commenter to immediately view their own pending comment.
- CVE-2026-85681Critical
The WP Component WordPress plugin through 2.2.4 does not have any capability or nonce checks on one of the actions it makes available to unauthenticated users, and it takes both the option name and the option value from the request, allowing unauthenticated attackers to overwrite any of the site's options. On a single site installation this leads to a full takeover, as registration can be enabled with a default role of administrator.
Original NVD description (English source)
EKG Gadu 1.9~pre+r2855-3+b1 contains a local buffer overflow vulnerability in the username handling that allows local attackers to execute arbitrary code by supplying an oversized username string. Attackers can trigger the overflow in the strlcpy function by passing a crafted buffer exceeding 258 bytes to overwrite the instruction pointer and execute shellcode with user privileges.

