Out-of-bounds Read in Tnef Project
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.012 (67.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 67.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000
Affected products
- Tnef Project
- Canonical Ubuntu Linux — versions 16.04
- Debian Linux — versions 8.0
- Fedoraproject Fedora — versions 30, 31
Weakness classification (CWE)
References
- github.com/verdammelt/tnef/pull/40 (Exploit, Patch, Third Party Advisory)
- github.com/verdammelt/tnef/compare/1.4.17...1.4.18 (Patch, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2019/11/msg00035.html (mailing-list, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- usn.ubuntu.com/4524-1/ (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2021/08/msg00025.html (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-18849?
- CVE-2019-18849 is a medium-severity vulnerability in Tnef Project, classified under Out-of-bounds Read. CVSS score: 5.5/10. Published 2019-11-11.
- How severe is CVE-2019-18849?
- Medium severity. CVSS v3 base score is 5.5 out of 10.