CVE-2019-18849

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.

CVSS v3.0 5.5 MEDIUM
CVSS v2.0 4.3 MEDIUM

5.5^/10

CVSS v3.0 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

4.3^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 8.6 / Impact : 2.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://github.com/verdammelt/tnef/pull/40	Exploit Patch Third Party Advisory
https://github.com/verdammelt/tnef/compare/1.4.17...1.4.18	Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/11/msg00035.html	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RMKFSHPMOZL7MDWU5RYOTIBTRWSZ4Z6X/	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/W7CPKBW4QZ4VIY4UXIUVUSHRJ4R2FROE/	Mailing List Third Party Advisory
https://usn.ubuntu.com/4524-1/	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/08/msg00025.html	Mailing List Third Party Advisory

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Configurations

Configuration 1 (hide)

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

Configuration 2 (hide)

OR	cpe:2.3:o:fedoraproject:fedora:30:::::::*
	cpe:2.3:o:fedoraproject:fedora:31:::::::*

Configuration 3 (hide)

cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*

Configuration 4 (hide)

cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

Information

Published : 2019-11-10 20:15

Updated : 2022-04-22 12:57

NVD link : CVE-2019-18849

Mitre link : CVE-2019-18849

JSON object : View

CWE

CWE-125

Out-of-bounds Read

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Products Affected

debian

debian_linux

canonical

ubuntu_linux

tnef_project

tnef

fedoraproject

fedora

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