Buffer overflow in Netatalk
CVE-2022-43634
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Netatalk. Authentication is not required to exploit this vulnerability. The specific flaw exists within the dsi_writeinit function. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-17646.
Vulnerability class: Buffer Overflow
EPSS: 0.189 (97.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Netatalk — versions 3.1.13
Weakness classification (CWE)
Public proof-of-concept exploits
References
- zdi-disclosures@trendmicro.com (VDB Entry, Third Party Advisory)
- zdi-disclosures@trendmicro.com (Patch)
- zdi-disclosures@trendmicro.com (vendor-advisory)
- zdi-disclosures@trendmicro.com (vendor-advisory)
- zdi-disclosures@trendmicro.com (vendor-advisory)
- zdi-disclosures@trendmicro.com (mailing-list)
- zdi-disclosures@trendmicro.com (vendor-advisory)
Frequently asked questions
- What is CVE-2022-43634?
- CVE-2022-43634 is a critical-severity vulnerability in Netatalk, classified under Heap-based Buffer Overflow. CVSS score: 9.8/10. Published 2023-03-29.
- How severe is CVE-2022-43634?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2022-43634 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.