#VU86050 Out-of-bounds write in Microsoft Edge - CVE-2023-36409

Vulnerability identifier: #VU86050

Vulnerability risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-36409

CWE-ID: CWE-787

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Microsoft Edge
Client/Desktop applications / Web browsers

Vendor: Microsoft

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to a boundary error when processing untrusted input. A remote attacker can trick the victim to visit a specially crafted website, trigger an out-of-bounds write and write to enclave memory from a host application, which can leak memory contents of the enclave.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Microsoft Edge: before 118.0.2088.46, 118.0.2088.46

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External links
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36409

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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.