Vulnerability CVE-2019-17362


Published: 2019-10-08   Modified: 2019-10-09

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.

Type:

CWE-125

(Out-of-bounds Read)

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.4/10
4.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
None
Partial
Affected software
Libtom -> Libtomcrypt 
Debian -> Debian linux 

 References:
https://github.com/libtom/libtomcrypt/issues/507
https://github.com/libtom/libtomcrypt/pull/508
https://lists.debian.org/debian-lts-announce/2019/10/msg00010.html
https://vuldb.com/?id.142995

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