CVSS: 7.8EPSS: 0%CPEs: 1EXPL: 0CVE-2020-28016 – Ubuntu Security Notice USN-4934-2
https://notcve.org/view.php?id=CVE-2020-28016
06 May 2021 — Exim 4 before 4.94.2 allows an off-by-two Out-of-bounds Write because "-F ''" is mishandled by parse_fix_phrase. Exim 4 versiones anteriores a 4.94.2, permite una Escritura Fuera de Límites por dos pasos porque "-F ''" es manejado inapropiadamente con la función parse_fix_phrase USN-4934-1 fixed several vulnerabilities in Exim. This update provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. CVE-2020-28026 only affected Ubuntu 16.04 ESM. It was discovered that Exim contained multiple... • https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28016-PFPZA.txt • CWE-787: Out-of-bounds Write •
CVSS: 9.8EPSS: 4%CPEs: 1EXPL: 0CVE-2020-28017 – Debian Security Advisory 4912-1
https://notcve.org/view.php?id=CVE-2020-28017
06 May 2021 — Exim 4 before 4.94.2 allows Integer Overflow to Buffer Overflow in receive_add_recipient via an e-mail message with fifty million recipients. NOTE: remote exploitation may be difficult because of resource consumption. Exim 4 versiones anteriores a 4.94.2, permite un Desbordamiento de Enteros para el Desbordamiento del Búfer en la función receive_add_recipient por medio de un mensaje de correo electrónico con cincuenta millones de destinatarios. NOTA: una explotación remota puede ser difícil debido al c... • https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28017-RCPTL.txt • CWE-190: Integer Overflow or Wraparound •
CVSS: 9.8EPSS: 4%CPEs: 1EXPL: 0CVE-2020-28020 – Gentoo Linux Security Advisory 202105-01
https://notcve.org/view.php?id=CVE-2020-28020
06 May 2021 — Exim 4 before 4.92 allows Integer Overflow to Buffer Overflow, in which an unauthenticated remote attacker can execute arbitrary code by leveraging the mishandling of continuation lines during header-length restriction. Exim 4 versiones anteriores a 4.92, permite un Desbordamiento de Enteros para un Desbordamiento de Búfer, en el que un atacante remoto no autenticado pueda ejecutar código arbitrario aprovechando el manejo inapropiado de líneas de continuación durante la restricción de la longitud del encabe... • http://www.openwall.com/lists/oss-security/2021/07/25/1 • CWE-190: Integer Overflow or Wraparound •
CVSS: 9.0EPSS: 2%CPEs: 1EXPL: 0CVE-2020-28021 – Debian Security Advisory 4912-1
https://notcve.org/view.php?id=CVE-2020-28021
06 May 2021 — Exim 4 before 4.94.2 has Improper Neutralization of Line Delimiters. An authenticated remote SMTP client can insert newline characters into a spool file (which indirectly leads to remote code execution as root) via AUTH= in a MAIL FROM command. Exim 4 versiones anteriores a 4.94.2, presenta una Neutralización Inapropiada de Delimitadores de Línea. Un cliente SMTP remoto autenticado puede insertar caracteres newline en un archivo de cola (que indirectamente conlleva a una ejecución de código remota como... • https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28021-MAUTH.txt •
CVSS: 9.8EPSS: 0%CPEs: 1EXPL: 0CVE-2020-28022 – Debian Security Advisory 4912-1
https://notcve.org/view.php?id=CVE-2020-28022
06 May 2021 — Exim 4 before 4.94.2 has Improper Restriction of Write Operations within the Bounds of a Memory Buffer. This occurs when processing name=value pairs within MAIL FROM and RCPT TO commands. Exim 4 versiones anteriores a 4.94.2, se presenta una Restricción Inapropiada de Operaciones de Escritura dentro de los límites de un búfer de memoria. Esto ocurre cuando name=value son procesados dentro de los comandos MAIL FROM y RCPT TO The Qualys Research Labs reported several vulnerabilities in Exim, a mail trans... • https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28022-EXOPT.txt • CWE-787: Out-of-bounds Write •
CVSS: 9.8EPSS: 1%CPEs: 1EXPL: 0CVE-2020-28024 – Debian Security Advisory 4912-1
https://notcve.org/view.php?id=CVE-2020-28024
06 May 2021 — Exim 4 before 4.94.2 allows Buffer Underwrite that may result in unauthenticated remote attackers executing arbitrary commands, because smtp_ungetc was only intended to push back characters, but can actually push back non-character error codes such as EOF. Exim 4 versiones anteriores a 4.94.2, permite una Subscripción de Búfer que puede resultar en que unos atacantes remotos no autenticados ejecuten comandos arbitrarios, porque la función smtp_ungetc solo tenía la intención de retroceder caracteres, pero ac... • https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28024-UNGET.txt • CWE-787: Out-of-bounds Write •
CVSS: 7.5EPSS: 0%CPEs: 1EXPL: 0CVE-2020-28025 – Debian Security Advisory 4912-1
https://notcve.org/view.php?id=CVE-2020-28025
06 May 2021 — Exim 4 before 4.94.2 allows Out-of-bounds Read because pdkim_finish_bodyhash does not validate the relationship between sig->bodyhash.len and b->bh.len; thus, a crafted DKIM-Signature header might lead to a leak of sensitive information from process memory. Exim 4 versiones anteriores a 4.94.2, permite una lectura fuera de límites porque pdkim_finish_bodyhash no comprueba la relación entre sig-)bodyhash.len y b-)bh.len; por lo tanto, un encabezado DKIM-Signature diseñado podría conllevar una filtración... • https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28025-BHASH.txt • CWE-125: Out-of-bounds Read •
CVSS: 9.8EPSS: 1%CPEs: 1EXPL: 0CVE-2020-28026 – Debian Security Advisory 4912-1
https://notcve.org/view.php?id=CVE-2020-28026
06 May 2021 — Exim 4 before 4.94.2 has Improper Neutralization of Line Delimiters, relevant in non-default configurations that enable Delivery Status Notification (DSN). Certain uses of ORCPT= can place a newline into a spool header file, and indirectly allow unauthenticated remote attackers to execute arbitrary commands as root. Exim 4 versiones anteriores a 4.94.2, presenta una Neutralización Inapropiada de Delimitadores de Línea, relevante en configuraciones no predeterminadas que habilitan la Delivery Status Notifica... • https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28026-FGETS.txt •
CVSS: 6.3EPSS: 0%CPEs: 1EXPL: 1CVE-2021-27216 – Ubuntu Security Notice USN-4934-1
https://notcve.org/view.php?id=CVE-2021-27216
04 May 2021 — Exim 4 before 4.94.2 has Execution with Unnecessary Privileges. By leveraging a delete_pid_file race condition, a local user can delete arbitrary files as root. This involves the -oP and -oPX options. Exim 4 versiones anteriores a 4.94.2, presenta una Ejecución con Privilegios Innecesarios. Al aprovechar una condición de carrera delete_pid_file, un usuario local puede eliminar archivos arbitrarios como root. • https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28007-LFDIR.txt • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •
CVSS: 7.8EPSS: 0%CPEs: 1EXPL: 0CVE-2020-28007 – Ubuntu Security Notice USN-4934-1
https://notcve.org/view.php?id=CVE-2020-28007
04 May 2021 — Exim 4 before 4.94.2 allows Execution with Unnecessary Privileges. Because Exim operates as root in the log directory (owned by a non-root user), a symlink or hard link attack allows overwriting critical root-owned files anywhere on the filesystem. Exim 4 versiones anteriores a 4.94.2, permite una Ejecución con Privilegios Innecesarios. Debido a que Exim opera como root en el directorio de registro (propiedad para un usuario no root), un ataque de enlace simbólico o físico permite sobrescribir archivos... • https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28007-LFDIR.txt • CWE-59: Improper Link Resolution Before File Access ('Link Following') •