CVE-2019-18849
published 2019-11-11CVE-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…
PriorityP420medium5.5CVSS 3.1
AVLACLPRNUIRSUCNINAH
EPSS
1.20%
65.2th percentile
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.
Affected
11 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| canonical | ubuntu_linux | — | — |
| debian | debian_linux | — | — |
| debian | tnef | < tnef 1.4.18-1 (bookworm) | tnef 1.4.18-1 (bookworm) |
| fedoraproject | fedora | — | — |
| fedoraproject | fedora | — | — |
| tnef_project | tnef | < 1.4.18 | 1.4.18 |
| tnef_project | tnef | >= 0 < 1.4.18-1 | 1.4.18-1 |
| tnef_project | tnef | >= 0 < 1.4.18-1 | 1.4.18-1 |
| tnef_project | tnef | >= 0 < 1.4.18-1 | 1.4.18-1 |
| tnef_project | tnef | >= 0 < 1.4.18-1 | 1.4.18-1 |
| tnef_project | tnef | >= 0 < 1.4.9-1+deb8u4build0.16.04.1 | 1.4.9-1+deb8u4build0.16.04.1 |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
nvdv2.04.3MEDIUMAV:N/AC:M/Au:N/C:N/I:N/A:P
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_ubuntu5.5MEDIUM
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Ubuntu
TNEF vulnerabilities
vendor_ubuntu·2020-09-21·CVSS 5.5
CVE-2019-18849 [MEDIUM] TNEF vulnerabilities
Title: TNEF vulnerabilities
Summary: TNEF could be made to crash or write arbitrary files to the filesystem.
Paul Dreik discovered that TNEF incorrectly handled filenames. If a user
were tricked into opening a specially crafted email attachment, an
attacker could possibly use this issue to write arbitrary files to the
filesystem or cause TNEF crash, resulting in a denial of service.
(CVE-2019-18849)
Instructions: In general, a standard system update will make all the necessary changes.
Debian
CVE-2019-18849: tnef - In tnef before 1.4.18, an attacker may be able to write to the victim's .ssh/aut...
vendor_debian·2019·CVSS 5.5
CVE-2019-18849 [MEDIUM] CVE-2019-18849: tnef - In tnef before 1.4.18, an attacker may be able to write to the victim's .ssh/aut...
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.
Scope: local
bookworm: resolved (fixed in 1.4.18-1)
bullseye: resolved (fixed in 1.4.18-1)
forky: resolved (fixed in 1.4.18-1)
sid: resolved (fixed in 1.4.18-1)
trixie: resolved (fixed in 1.4.18-1)
GHSA
GHSA-cq6j-h35c-x8gr: In tnef before 1
ghsa_unreviewed·2022-05-24
CVE-2019-18849 [MEDIUM] CWE-125 GHSA-cq6j-h35c-x8gr: In tnef before 1
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.
OSV
tnef vulnerabilities
osv·2020-09-21·CVSS 5.5
CVE-2019-18849 [MEDIUM] tnef vulnerabilities
tnef vulnerabilities
Paul Dreik discovered that TNEF incorrectly handled filenames. If a user
were tricked into opening a specially crafted email attachment, an
attacker could possibly use this issue to write arbitrary files to the
filesystem or cause TNEF crash, resulting in a denial of service.
(CVE-2019-18849)
OSV
CVE-2019-18849: In tnef before 1
osv·2019-11-11·CVSS 5.5
CVE-2019-18849 [MEDIUM] CVE-2019-18849: In tnef before 1
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.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2019-18849 tnef: security bypass in .ssh/authorized_keys file via an e-mail message
bugzilla·2019-11-13·CVSS 5.5
CVE-2019-18849 [MEDIUM] CVE-2019-18849 tnef: security bypass in .ssh/authorized_keys file via an e-mail message
CVE-2019-18849 tnef: security bypass in .ssh/authorized_keys file via an e-mail message
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.
Reference:
https://github.com/verdammelt/tnef/pull/40
https://github.com/verdammelt/tnef/compare/1.4.17...1.4.18
Discussion:
Created tnef tracking bugs for this issue:
Affects: fedora-all [bug 1771892]
---
Created tnef tracking bugs for this issue:
Affects: epel-all [bug 1771893]
---
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bu
Bugzilla
CVE-2019-18849 tnef: security bypass in .ssh/authorized_keys file via an e-mail message [epel-all]
bugzilla·2019-11-13·CVSS 5.5
CVE-2019-18849 [MEDIUM] CVE-2019-18849 tnef: security bypass in .ssh/authorized_keys file via an e-mail message [epel-all]
CVE-2019-18849 tnef: security bypass in .ssh/authorized_keys file via an e-mail message [epel-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of epel-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multiple
Bugzilla
CVE-2019-18849 tnef: security bypass in .ssh/authorized_keys file via an e-mail message [fedora-all]
bugzilla·2019-11-13·CVSS 5.5
CVE-2019-18849 [MEDIUM] CVE-2019-18849 tnef: security bypass in .ssh/authorized_keys file via an e-mail message [fedora-all]
CVE-2019-18849 tnef: security bypass in .ssh/authorized_keys file via an e-mail message [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects mult
https://github.com/verdammelt/tnef/compare/1.4.17...1.4.18https://github.com/verdammelt/tnef/pull/40https://lists.debian.org/debian-lts-announce/2019/11/msg00035.htmlhttps://lists.debian.org/debian-lts-announce/2021/08/msg00025.htmlhttps://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/https://github.com/verdammelt/tnef/compare/1.4.17...1.4.18https://github.com/verdammelt/tnef/pull/40https://lists.debian.org/debian-lts-announce/2019/11/msg00035.htmlhttps://lists.debian.org/debian-lts-announce/2021/08/msg00025.htmlhttps://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/
2019-11-11
Published