445
VMScore

CVE-2020-28023

Published: 06/05/2021 Updated: 10/05/2021
CVSS v2 Base Score: 5 | Impact Score: 2.9 | Exploitability Score: 10
CVSS v3 Base Score: 7.5 | Impact Score: 3.6 | Exploitability Score: 3.9
VMScore: 445
Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N

Vulnerability Summary

Exim 4 prior to 4.94.2 allows Out-of-bounds Read. smtp_setup_msg may disclose sensitive information from process memory to an unauthenticated SMTP client.

Vulnerability Trend

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exim exim

Vendor Advisories

The Qualys Research Labs reported several vulnerabilities in Exim, a mail transport agent, which could result in local privilege escalation and remote code execution Details can be found in the Qualys advisory at wwwqualyscom/2021/05/04/21nails/21nailstxt For the stable distribution (buster), these problems have been fixed in version 4 ...
Exim 4 before 4942 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 (CVE-2020-28007) Exim 4 before 4942 allows Execution with Unnecessary Privileges Because Exim oper ...
An out-of-bounds read in smtp_setup_msg() has been found in Exim before version 4942 ...

Mailing Lists

Dear Exim-Users Abstract -------- Several exploitable vulnerabilities in Exim were reported to us and are fixed We have prepared a security release, tagged as "exim-4942" This release contains all changes on the exim-494+fixes branch plus security fixes You should update your Exim instances as soon as possible (See below for short upgra ...
Qualys Security Advisory 21Nails: Multiple vulnerabilities in Exim ======================================================================== Contents ======================================================================== Summary Local vulnerabilities - CVE-2020-28007: Link attack in Exim's log directory - CVE-2020-28008: Assorted attacks in Ex ...