CVE-2022-43634: Netatalk dsi_writeinit Heap-based Buffer Overflow Remote Code Execution Vulnerability
First published: Wed Mar 29 2023(Updated: )
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.
Credit: zdi-disclosures@trendmicro.com zdi-disclosures@trendmicro.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Netatalk Netatalk | =3.1.13 | |
| Netatalk Netatalk | ||
| debian/netatalk | <=3.1.12~ds-3 | 3.1.12~ds-3+deb10u4 3.1.12~ds-8+deb11u1 3.1.18~ds-1 |
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Reference Links
- https://github.com/Netatalk/Netatalk/pull/186
- https://lists.debian.org/debian-lts-announce/2023/05/msg00018.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EZYWSGVA6WXREMB6PV56HAHKU7R6KPOP/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GEAFLA5L2SHOUFBAGUXIF2TZLGBXGJKT/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SG6WZW5LXFVH3P7ZVZRGHUVJEMEFKQLI/
- https://www.debian.org/security/2023/dsa-5503
- https://www.zerodayinitiative.com/advisories/ZDI-23-094/
- https://github.com/advisories/GHSA-fwj9-7qq8-jc93
- https://github.com/Netatalk/netatalk/commit/5fcb4ab02aced14484310165b3d754bb2f0820ca
- https://github.com/Netatalk/netatalk/commit/e6a9ce5b8145d0b39851fbf80916035a714e9d59
- https://security-tracker.debian.org/tracker/CVE-2022-43634
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EZYWSGVA6WXREMB6PV56HAHKU7R6KPOP/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SG6WZW5LXFVH3P7ZVZRGHUVJEMEFKQLI/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GEAFLA5L2SHOUFBAGUXIF2TZLGBXGJKT/
Frequently Asked Questions
What is the vulnerability ID for this vulnerability?
The vulnerability ID for this vulnerability is CVE-2022-43634.
What is the severity of CVE-2022-43634?
The severity of CVE-2022-43634 is critical with a CVSS score of 9.8.
How does this vulnerability allow remote code execution?
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Netatalk.
Is authentication required to exploit this vulnerability?
No, authentication is not required to exploit this vulnerability.
How can I fix CVE-2022-43634?
To fix CVE-2022-43634, it is recommended to update Netatalk to version 3.1.17 or apply the provided patches.
- collector/nvd-api
- collector/security-tracker-debian
- collector/nvd-index
- agent/author
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/severity
- agent/references
- agent/title
- agent/remedy
- agent/weakness
- agent/first-publish-date
- agent/tags
- agent/description
- agent/event
- collector/zdi-advisory
- source/ZDI
- alias/ZDI-23-094
- alias/ZDI-CAN-17646
- alias/CVE-2022-43634
- agent/software-canonical-lookup
- vendor/netatalk
- canonical/netatalk netatalk
- version/netatalk netatalk/3.1.13
- package-manager/debian