CVE-2019-17362

critical

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.

References

Advisories
More

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YU5OMCY3PX54YVI4FMNDEENHDJZJ3RJW/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/47YP5SXQ4RY6KMTK2HI5ZZR244XKRMCZ/

https://lists.debian.org/debian-lts-announce/2019/10/msg00010.html

https://github.com/libtom/libtomcrypt/pull/508

http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00041.html

http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00020.html

https://vuldb.com/?id.142995

https://github.com/libtom/libtomcrypt/issues/507

Details

Source: Mitre, NVD

Published: 2019-10-09

Updated: 2023-12-14

Risk Information

CVSS v2

Base Score: 6.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:P

Severity: Medium

CVSS v3

Base Score: 9.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Severity: Critical

EPSS

EPSS: 0.0066