A vulnerability classified as problematic has been found in Boostnote 0.11.7. This affects an unknown code block of the component Markdown Handler. The manipulation as part of a IMG Element leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. The summary by CVE is:

Boostnote v0.11.7 allows XSS during highlighting of Markdown text, as demonstrated by an onerror attribute of an IMG element.

The bug was discovered 07/05/2018. The weakness was presented 07/08/2018 (Website). The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2018-13433 since 07/08/2018. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 3 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

• Boostnote

Version

• 0.11.7

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Discussion