Debian update for libevt

1) Improper input validation

EUVDB-ID: #VU11477

Risk: High

CVSSv3.1: 8.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-8754

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition or execute arbitrary code on the target system.

The weakness exists in the libevt_record_values_read_event() function in libevt_record_values.c due to improper checking of out-of-bounds values of user SID data size, strings size, or data size. A remote attacker can submit a specially crafted EVT file, cause the service to crash or execute arbitrary code.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Update the affected package to version: 20170120-1+deb9u1

Vulnerable software versions

Debian Linux: All versions

External links

http://github.com/libyal/libevt/commit/444ca3ce7853538c577e0ec3f6146d2d65780734

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.