CVE-2023-24068 Missing authorization in n/a
Attackers with local access can modify cached attachments to inject malicious code, bypassing client validation mechanisms.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-24068?
CVE-2023-24068 is a high-severity missing authorization vulnerability in n/a, published on 23 Jan 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Signal Desktop before 6.2.0 on Windows, Linux, and macOS allows an attacker to modify conversation attachments within the attachments.noindex directory. Client mechanisms fail to validate modifications of existing cached files, resulting in an attacker's ability to insert malicious code into pre-existing attachments or replace them completely. A threat actor can forward the existing attachment in the corresponding conversation to external groups, and the name and size of the file will not change, allowing the malware to masquerade as another file. NOTE: the vendor disputes the relevance of this finding because the product is not intended to protect against adversaries with this degree of local access.
Which versions are affected by CVE-2023-24068?
It affects 1 product.
Products include Signal Signal-Desktop.
How do I fix CVE-2023-24068?
No fix has been published for CVE-2023-24068 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2023-24068 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-24068 exists.
Other vulnerabilities in n/a
Sources
Also known as GHSA-wrv4-jq6j-75pm.