CVSS: 7.5EPSS: 0%CPEs: 4EXPL: 1CVE-2022-39028
https://notcve.org/view.php?id=CVE-2022-39028
telnetd in GNU Inetutils through 2.3, MIT krb5-appl through 1.0.3, and derivative works has a NULL pointer dereference via 0xff 0xf7 or 0xff 0xf8. In a typical installation, the telnetd application would crash but the telnet service would remain available through inetd. However, if the telnetd application has many crashes within a short time interval, the telnet service would become unavailable after inetd logs a "telnet/tcp server failing (looping), service terminated" error. NOTE: MIT krb5-appl is not supported upstream but is shipped by a few Linux distributions. The affected code was removed from the supported MIT Kerberos 5 (aka krb5) product many years ago, at version 1.8. telnetd en GNU Inetutils versiones hasta 2.3, MIT krb5-appl versiones hasta 1.0.3, y trabajos derivados presenta una desreferencia de puntero NULL por medio de 0xff 0xf7 o 0xff 0xf8. • https://git.hadrons.org/cgit/debian/pkgs/inetutils.git/commit/?id=113da8021710d871c7dd72d2a4d5615d42d64289 https://lists.debian.org/debian-lts-announce/2022/11/msg00033.html https://lists.gnu.org/archive/html/bug-inetutils/2022-08/msg00002.html https://pierrekim.github.io/blog/2022-08-24-2-byte-dos-freebsd-netbsd-telnetd-netkit-telnetd-inetutils-telnetd-kerberos-telnetd.html • CWE-476: NULL Pointer Dereference •
CVSS: 10.0EPSS: 83%CPEs: 361EXPL: 0CVE-2020-10188 – telnet-server: no bounds checks in nextitem() function allows to remotely execute arbitrary code
https://notcve.org/view.php?id=CVE-2020-10188
utility.c in telnetd in netkit telnet through 0.17 allows remote attackers to execute arbitrary code via short writes or urgent data, because of a buffer overflow involving the netclear and nextitem functions. El archivo utility.c en telnetd en netkit telnet versiones hasta 0.17, permite a atacantes remotos ejecutar código arbitrario por medio de escrituras cortas o datos urgentes, debido a un desbordamiento del búfer que involucra a las funciones netclear y nextitem. A vulnerability was found where incorrect bounds checks in the telnet server’s (telnetd) handling of short writes and urgent data, could lead to information disclosure and corruption of heap data. An unauthenticated remote attacker could exploit these bugs by sending specially crafted telnet packets to achieve arbitrary code execution in the telnet server. • https://appgateresearch.blogspot.com/2020/02/bravestarr-fedora-31-netkit-telnetd_28.html https://github.com/krb5/krb5-appl/blob/d00cd671dfe945791b33d4f1f6a5c57ae1667ef8/telnet/telnetd/utility.c#L205-L216 https://lists.debian.org/debian-lts-announce/2020/05/msg00012.html https://lists.debian.org/debian-lts-announce/2020/08/msg00038.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7FMTRRQTYKWZD2GMXX3GLZV46OLPCLVK https://lists.fedoraproject.org/archives/list/package-announce%40l • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') •
CVSS: 7.4EPSS: 0%CPEs: 2EXPL: 1CVE-2019-7283
https://notcve.org/view.php?id=CVE-2019-7283
An issue was discovered in rcp in NetKit through 0.17. For an rcp operation, the server chooses which files/directories are sent to the client. However, the rcp client only performs cursory validation of the object name returned. A malicious rsh server (or Man-in-The-Middle attacker) can overwrite arbitrary files in a directory on the rcp client machine. This is similar to CVE-2019-6111. • https://bugs.debian.org/920486 https://lists.debian.org/debian-lts-announce/2021/11/msg00016.html https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt •
CVSS: 5.9EPSS: 0%CPEs: 5EXPL: 1CVE-2019-7282
https://notcve.org/view.php?id=CVE-2019-7282
In NetKit through 0.17, rcp.c in the rcp client allows remote rsh servers to bypass intended access restrictions via the filename of . or an empty filename. The impact is modifying the permissions of the target directory on the client side. This is similar to CVE-2018-20685. En NetKit hasta la versión 0.17, rcp.c en el cliente rcp permite que los servidores rsh omitan las restricciones de acceso planeadas mediante un nombre de archivo "." o un nombre de archivo vacío. El impacto consiste en modificar los permisos del directorio objetivo en el lado del cliente. • https://bugs.debian.org/920486 https://lists.debian.org/debian-lts-announce/2021/11/msg00016.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DU33YVEDGFDMAZPSRQTRVKSKG4FAX7QB https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FSEX3TKX2DBUKG4A7VJFDLSMZIBJQZ3G https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NA24VQJATZWYV42JG2PQUW7IHIZS7UKP https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt •
CVSS: 5.0EPSS: 0%CPEs: 1EXPL: 0CVE-2004-0911
https://notcve.org/view.php?id=CVE-2004-0911
telnetd for netkit 0.17 and earlier, and possibly other versions, on Debian GNU/Linux allows remote attackers to cause a denial of service (free of an invalid pointer), a different vulnerability than CVE-2001-0554. telnetd de netkit 0.17 y anteriores y posiblemente otras versiones, en Debian GNU/Linux, permite a atacantes remotos causar una denegación de servicio (liberación de puntero no válido), una vulnerabilidad distinta de CVE-2001-0554. • http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=273694 http://www.debian.org/security/2004/dsa-556 http://www.securityfocus.com/archive/1/375743 https://exchange.xforce.ibmcloud.com/vulnerabilities/17540 •