CVE-2021-40843 Deserialization in n/a
An attacker with local database write access can trigger unsafe deserialization to execute arbitrary code with SYSTEM privileges on the server.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-40843?
CVE-2021-40843 is a high-severity unsafe deserialization vulnerability in n/a, published on 13 Oct 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Proofpoint Insider Threat Management Server contains an unsafe deserialization vulnerability in the Web Console. An attacker with write access to the local database could cause arbitrary code to execute with SYSTEM privileges on the underlying server when a Web Console user triggers retrieval of that data. When chained with a SQL injection vulnerability, the vulnerability could be exploited remotely if Web Console users click a series of maliciously crafted URLs. All versions prior to 7.11.2 are affected.
Weakness: CWE-502
Which versions are affected by CVE-2021-40843?
It affects 1 product.
Products include Proofpoint Insider Threat Management Server.
How do I fix CVE-2021-40843?
No fix has been published for CVE-2021-40843 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2021-40843 being exploited?
There is no known exploitation of CVE-2021-40843 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-7c7v-mm4m-x9mj.