Vulnerability in Apple macOS
CVE-2023-24068
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (28.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 28.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
Public proof-of-concept exploits
References
- signal.org/en/download/windows (Vendor Advisory)
- signal.org/download/macos (Vendor Advisory)
- signal.org/download/linux (Vendor Advisory)
- johnjhacking.com/blog/cve-2023-24068-cve-2023-24069/ (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2023-24068?
- CVE-2023-24068 is a high-severity vulnerability in Apple macOS. CVSS score: 7.8/10. Published 2023-01-23.
- How severe is CVE-2023-24068?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2023-24068 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.