VulnerabilityModified
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.
MEDIUM 5.5EPSS 1.20%
Does this matter?
Lower severity and a low EPSS score (1.20%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- EPSS
- 1.20% probability · 66th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- tnef project/tnef · fedoraproject/fedora · canonical/ubuntu linux · debian/debian linux
- Source
- cve@mitre.org
References
- https://github.com/verdammelt/tnef/compare/1.4.17...1.4.18Patch, Third Party Advisory
- https://github.com/verdammelt/tnef/pull/40Exploit, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/11/msg00035.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/08/msg00025.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RMKFSHPMOZL7MDWU5RYOTIBTRWSZ4Z6X/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W7CPKBW4QZ4VIY4UXIUVUSHRJ4R2FROE/
- https://usn.ubuntu.com/4524-1/Third Party Advisory
- https://github.com/verdammelt/tnef/compare/1.4.17...1.4.18Patch, Third Party Advisory
- https://github.com/verdammelt/tnef/pull/40Exploit, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/11/msg00035.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/08/msg00025.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RMKFSHPMOZL7MDWU5RYOTIBTRWSZ4Z6X/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W7CPKBW4QZ4VIY4UXIUVUSHRJ4R2FROE/
- https://usn.ubuntu.com/4524-1/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.