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CVE-2020-28026

Status Candidate

Overview

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.

Related Files

Ubuntu Security Notice USN-4934-2
Posted May 6, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4934-2 - 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 security issues. An attacker could use these issues to cause a denial of service, execute arbitrary code remotely, obtain sensitive information, or escalate local privileges. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2020-28007, CVE-2020-28012, CVE-2020-28016, CVE-2020-28024, CVE-2020-28026
SHA-256 | d84bb6e497884aa30f214eda6aa0699a170ef1533f22c816ec88d744923388bf
Gentoo Linux Security Advisory 202105-01
Posted May 6, 2021
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202105-1 - Multiple vulnerabilities have been found in Exim, the worst of which allows remote attackers to execute arbitrary code. Versions less than 4.94.2 are affected.

tags | advisory, remote, arbitrary, vulnerability
systems | linux, gentoo
advisories | CVE-2020-28007, CVE-2020-28008, CVE-2020-28009, CVE-2020-28010, CVE-2020-28011, CVE-2020-28012, CVE-2020-28013, CVE-2020-28014, CVE-2020-28015, CVE-2020-28016, CVE-2020-28017, CVE-2020-28018, CVE-2020-28019, CVE-2020-28020, CVE-2020-28021, CVE-2020-28022, CVE-2020-28023, CVE-2020-28024, CVE-2020-28025, CVE-2020-28026, CVE-2021-27216
SHA-256 | 9641088a5d30400392651664cd8a2eda6036d0bb0367614d0ba89dcb7b10220b
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