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Vulnerability record · CVE-2019-17362 · published 9 October 2019

CVE-2019-17362: Libtomcrypt out-of-bounds read vulnerability

Libtom · Libtomcrypt

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.

9.1 CVSS 3.1 Critical EPSS 3.1% · top 12.6% CWE-125 · Out-of-bounds read
9.1CVSS 3.1 base score, v2 6.4
3.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
18References, 2 tagged exploit
17 Jun 2026Last modified by NVD

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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00020.html
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00041.html
https://github.com/libtom/libtomcrypt/issues/507 ExploitThird Party Advisory
https://github.com/libtom/libtomcrypt/pull/508 PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2019/10/msg00010.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/47YP5SXQ4RY6KMTK2HI5ZZR
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YU5OMCY3PX54YVI4FMNDEEN
https://vuldb.com/?id.142995 Permissions Required
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00020.html
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00041.html
https://github.com/libtom/libtomcrypt/issues/507 ExploitThird Party Advisory
https://github.com/libtom/libtomcrypt/pull/508 PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2019/10/msg00010.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/47YP5SXQ4RY6KMTK2HI5ZZR
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YU5OMCY3PX54YVI4FMNDEEN
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/47YP5SXQ4RY6KMTK2HI5ZZR24
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YU5OMCY3PX54YVI4FMNDEENHD
https://vuldb.com/?id.142995 Permissions Required

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Source: NIST National Vulnerability Database (record CVE-2019-17362), CISA KEV, FIRST EPSS (scores of 2026-10-11). This page is refreshed as NVD updates the record.