--- cve: "CVE-2018-19518" severity: "LOW" cvss: 3.1 epss: "95.2%" vendor: "n/a" kev: false exploited: false published: "2018-11-25 10:29:00" tags: [cve, security, low] source: tsecurity.de CVE-Dossier exported: "2026-09-02T11:56:00+02:00" --- # CVE-2018-19518 > 3.1 LOW · 🧪 PoC ## Beschreibung University of Washington IMAP Toolkit 2007f on UNIX, as used in imap_open() in PHP and other products, launches an rsh command (by means of the imap_rimap function in c-client/imap4r1.c and the tcp_aopen function in osdep/unix/tcp_unix.c) without preventing argument injection, which might allow remote attackers to execute arbitrary OS commands if the IMAP server name is untrusted input (e.g., entered by a user of a web application) and if rsh has been replaced by a program with different argument semantics. For example, if rsh is a link to ssh (as seen on Debian and Ubuntu systems), then the attack can use an IMAP server name containing a "-oProxyCommand" argument. ## Exploit-Evidenz - [EDB-45914 — PHP imap_open - Remote Code Execution (Metasploit)](https://www.exploit-db.com/exploits/45914) ✅ ## Referenzen - - - - - - - - - - - - - - - --- _Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2018-19518) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_