CVE-2019-18849

medium
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

In tnef before 1.4.18, an attacker may be able to write to the victim's .ssh/authorized_keys file via an e-mail message with a crafted winmail.dat application/ms-tnef attachment, because of a heap-based buffer over-read involving strdup.

References

https://github.com/verdammelt/tnef/pull/40

https://github.com/verdammelt/tnef/compare/1.4.17...1.4.18

https://lists.debian.org/debian-lts-announce/2019/11/msg00035.html

https://lists.fedoraproject.org/archives/list/[email protected]/message/RMKFSHPMOZL7MDWU5RYOTIBTRWSZ4Z6X/

https://lists.fedoraproject.org/archives/list/[email protected]/message/W7CPKBW4QZ4VIY4UXIUVUSHRJ4R2FROE/

https://usn.ubuntu.com/4524-1/

https://lists.debian.org/debian-lts-announce/2021/08/msg00025.html

Details

Source: MITRE

Published: 2019-11-11

Updated: 2021-08-23

Type: CWE-125

Risk Information

CVSS v2

Base Score: 4.3

Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P

Impact Score: 2.9

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3

Base Score: 5.5

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Impact Score: 3.6

Exploitability Score: 1.8

Severity: MEDIUM

Vulnerable Software

Configuration 1

OR

cpe:2.3:a:tnef_project:tnef:*:*:*:*:*:*:*:*

Tenable Plugins

View all (5 total)

IDNameProductFamilySeverity
152773Debian DLA-2748-1 : tnef - LTS security updateNessusDebian Local Security Checks
medium
140719Ubuntu 16.04 LTS : TNEF vulnerabilities (USN-4524-1)NessusUbuntu Local Security Checks
medium
131712Fedora 31 : tnef (2019-815807c020)NessusFedora Local Security Checks
high
131711Fedora 30 : tnef (2019-5f14b810f8)NessusFedora Local Security Checks
high
131430Debian DLA-2005-1 : tnef security updateNessusDebian Local Security Checks
medium