CVE-2019-18849

Public Exploit

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.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.77% Top 30%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory ubuntu.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/verdammelt/tnef/pull/40 exploit third party advisory patch
https://github.com/verdammelt/tnef/compare/1.4.17...1.4.18 third party advisory patch
https://lists.debian.org/debian-lts-announce/2019/11/msg00035.html third party advisory mailing list
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RMKFSHPMOZL7MDWU5RYOTIBTRWSZ4Z6X/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W7CPKBW4QZ4VIY4UXIUVUSHRJ4R2FROE/ vendor advisory
https://usn.ubuntu.com/4524-1/ third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2021/08/msg00025.html third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2019-18849?
CVE-2019-18849 has been scored as a medium severity vulnerability.
How to fix CVE-2019-18849?
To fix CVE-2019-18849, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-18849 being actively exploited in the wild?
It is possible that CVE-2019-18849 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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