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. 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 v3.0 9.1 CRITICAL
CVSS v2.0 6.4 MEDIUM

9.1^/10

CVSS v3.0 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

6.4^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 10.0 / Impact : 4.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://github.com/libtom/libtomcrypt/pull/508	Patch Third Party Advisory
https://github.com/libtom/libtomcrypt/issues/507	Exploit Third Party Advisory
https://vuldb.com/?id.142995	Permissions Required
https://lists.debian.org/debian-lts-announce/2019/10/msg00010.html	Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00020.html
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00041.html

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Configurations

Configuration 1 (hide)

cpe:2.3:a:libtom:libtomcrypt:*:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

Information

Published : 2019-10-08 18:15

Updated : 2019-11-09 11:15

NVD link : CVE-2019-17362

Mitre link : CVE-2019-17362

JSON object : View

CWE

CWE-125

Out-of-bounds Read

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Products Affected

libtom

libtomcrypt

debian

debian_linux

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