Netatalk: Improper Handling of Exceptional Conditions
CVE-2022-23121 is a critical-severity improper handling of exceptional conditions vulnerability in Netatalk, with a CVSS 3.1 base score of 9.8 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected Netatalk versions: 3.1.12. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 8.53% chance of exploitation within 30 days, which is in the top 4.87% of all scored CVEs.
Critical severity: a successful attack would have severe impact.
What to do
- Check which version of Netatalk you run against the affected versions below, and install the vendor's latest release.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Netatalk | Netatalk | 3.1.12 | Not stated |
| Debian | Debian Linux | 10.0; 11.0 | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 9.8 | Critical | NVD |
| CVSS 3.0 | 9.8 | Critical | CNA (trendmicro.com) |
Official description
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 parse_entries function. The issue results from the lack of proper error handling when parsing AppleDouble entries. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-15819.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Handling of Exceptional Conditions
The product does not handle or incorrectly handles an exceptional condition.
More Improper Handling of Exceptional Conditions vulnerabilities (CWE-755)
Timeline
- CVE record published.
- Record last changed materially (score, affected products, status or references).
References
Patches and release notes
- netatalk.sourceforge.io/3.1/ReleaseNotes3.1.13.htmlRelease Notes
Third-party and government advisories
- lists.debian.org/debian-lts-announce/2023/05/msg00018.htmlMailing List, Third Party Advisory
- lists.debian.org/debian-lts-announce/2023/06/msg00000.htmlMailing List, Third Party Advisory
- security.gentoo.org/glsa/202311-02Issue Tracking, Third Party Advisory
- debian.org/security/2023/dsa-5503Third Party Advisory
- zerodayinitiative.com/advisories/ZDI-22-527/Third Party Advisory, VDB Entry
Other references
Other vulnerabilities in Netatalk
- 7.5 High severity
- 7.5 High severity
- 7.6 High severity
- 7.1 High severity
- 7.1 High severity
- 7.5 High severity
Recent Improper Handling of Exceptional Conditions vulnerabilities
- 9.8 Critical severity
- 7.8 High severity
- 7.8 High severity
- 9.8 Critical severity
- 9.8 Critical severity
- 9.8 Critical severity
Spotted an error? Tell us.