Critical severity · published Oct 9, 2019
CVE-2019-17362
In LibTomCrypt through 1.18.2, the der_decode_utf8_string function (in der_decode_utf8_string.c) does not properly detect certain invalid UTF-8 sequences
9.1
CVSS
3.1%
EPSS
No
On KEV
Description
In LibTomCrypt through 1.18.2, the der_decode_utf8_string function (in der_decode_utf8_string.c) does not properly detect certain invalid UTF-8 sequences. This allows context-dependent attackers to cause a denial of service (out-of-bounds read and crash) or read information from other memory locations via carefully crafted DER-encoded data.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.1% · higher than 88% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
8.0 · source: NVD
LI
Libtomcrypt · Libtom
through 1.18.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-17362
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-17362
lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00020.html
lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00041.html
Exploit
https://github.com/libtom/libtomcrypt/issues/507
Patch
https://github.com/libtom/libtomcrypt/pull/508
Mailing List
https://lists.debian.org/debian-lts-announce/2019/10/msg00010.html
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/47YP5SXQ4RY6KMTK2HI5ZZR244XKRMCZ/
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