Critical severity · published May 12, 2017
CVE-2017-8911
An integer underflow has been identified in the unicode_to_utf8() function in tnef 1.4.14
9.8
CVSS
1.9%
EPSS
No
On KEV
Description
An integer underflow has been identified in the unicode_to_utf8() function in tnef 1.4.14. This might lead to invalid write operations, controlled by an attacker.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.9% · higher than 80% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TN
Tnef · Tnef Project
1.4.14 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-8911
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-8911
www.debian.org
http://www.debian.org/security/2017/dsa-3869
Issue Tracking
https://github.com/verdammelt/tnef/issues/23
security.gentoo.org
https://security.gentoo.org/glsa/201708-02
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