port 135 là gì

There is a RPC (a RPC's Endpoint Mapper component) vulnerability in Windows NT where a malformed request to tướng port 135 could cause denial of service (DoS). RPC contains a flaw that causes it to tướng fail upon receipt of a request that contains a particular type of malformed data. To restore normal functionality victim has to tướng reboot the system. Alternatively, you can upgrade/patch your OS (there is patch downloadable from Microsoft), or you can close port 135.

Port 135 is used by Messenger Service (not MSN Messenger) and exploited in popup net send messenger spam [MSKB 330904]. To stop the popups you'd need to tướng filter port 135 at the firewall level or stop the messenger service. The service uses all the following ports: 135/tcp, 135/udp, 137/udp 138/udp, 139/tcp, 445/tcp.

MS Security Bulletin [MS03-026] outlines another critical Buffer Overrun RPC vulnerability that can be exploited via ports 135, 139, 445, 593 (or any other specifically configured RPC port). You should filter the above mentioned ports at the firewall level and not allow RPC over an unsecure network, such as the Internet.

W32.Blaster.Worm [Symantec-2003-081113-0229-99] - a widely spread worm that exploits the DCOM RPC vulnerability described above (MS Security Bulletin [MS03-026]). The worm allows remote access to tướng an infected computer via ports 4444/tcp and 69/UDP, and spreads through port 135/tcp. To avoid being infected consider closing those ports.

Port is also used by Messenger Service (not MSN Messenger) and exploited in popup net send messenger spam [MSKB 330904]. To stop the popups you'd need to tướng filter port 135 at the firewall level or stop the messenger service. The service uses all the following ports: 135/tcp, 135/udp, 137/udp 138/udp, 139/tcp, 445/tcp.

W32.Reatle.E@mm [Symantec-2005-080215-5809-99] - a mass-mailing worm that opens a backdoor and also spreads by exploiting the MS DCOM RPC Vulnerability [MS03-026] on port 135/tcp. It uses its own SMTP engine to tướng gmail itself to tướng gathered gmail addresses. Opens an FTP server on port 1155/tcp. Opens a proxy server on port 2005/tcp. It also attempts to tướng perform denial of service (DDoS) attack agains known security websites on port 1052/tcp. Note: port 1052 corresponds to tướng the dynamic DNS service.

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A vulnerability has been identified in LOGO!8 BM (incl. SIPLUS variants) (All versions). The vulnerability could lead to tướng an attacker reading and modifying the device configuration and obtain project files from affected devices. The security vulnerability could be exploited by an unauthenticated attacker with network access to tướng port 135/tcp. No user interaction is required to tướng exploit this security vulnerability. The vulnerability impacts confidentiality, integrity, and availability of the device. At the time of advisory publication no public exploitation of this security vulnerability was known.
References: [CVE-2020-7589], [XFDB-183129]