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Bitdefender iso.xmd ISO Parsing Out-Of-Bounds Read Vulnerability

Publication date: August 5th, 2018

CVE ID:

CVE-2018-18058

CVSS scrore:

5.3 - https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C

Affected vendors:

Bitdefender

Affected products:

Any product using the Bitdefender engines with a version lower than v7.76662

Vulnerability details:

A vulnerability has been discovered in the iso.xmd parser that results from a lack of proper validation of user-supplied data, which can result in a division-by-zero circumstance. Paired with other vulnerabilities, this can result in denial-of-service. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

Additional details:

Bitdefender has issued an update in version 7.76662 to correct this vulnerability

Disclosure timeline:

2018-07-09 - Vulnerability reported privately to vendor 2018-07-10 - Update delivered to resolve the issue 2018-09-xx - Coordinated public release of advisory

Credit:

Ke Liu of Tencent's Xuanwu Labs