CVE-2022-43634

29.03.2023, 19:15

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.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	NIST	9.8 CRITICAL	NETWORK	LOW	NONE	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
zdi	CNA	9.8 CRITICAL	NETWORK	LOW	NONE	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVE	ADP	---				---
CISA-ADP	ADP	---				---

Base Score

CVSS 3.x

EPSS Score

Percentile: 88%

Vendor	Product	Version
netatalk	netatalk	3.1.13

𝑥

= Vulnerable software versions

Debian Releases

Debian Product

Codename

netatalk

bullseye (security)	3.1.12~ds-8+deb11u1 fixed
bullseye	3.1.12~ds-8+deb11u1 fixed
sid	4.0.3~ds-2 fixed
trixie	4.0.3~ds-2 fixed

Ubuntu Releases

Ubuntu Product

Codename

netatalk

lunar	not-affected
kinetic	Fixed 3.1.13~ds-2ubuntu0.22.10.1 released
jammy	Fixed 3.1.12~ds-9ubuntu0.22.04.1 released
focal	Fixed 3.1.12~ds-4ubuntu0.20.04.1 released
bionic	ignored
xenial	ignored
trusty	ignored

Common Weakness Enumeration

CWE-122 - Heap-based Buffer Overflow
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

References

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%40lists.fedoraproject.org/message/EZYWSGVA6WXREMB6PV56HAHKU7R6KPOP/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GEAFLA5L2SHOUFBAGUXIF2TZLGBXGJKT/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SG6WZW5LXFVH3P7ZVZRGHUVJEMEFKQLI/

https://www.debian.org/security/2023/dsa-5503