CVE-2023-34100
Contiki-NG IPv6 Buffer Read Vulnerability
Description
Contiki-NG is an open-source, cross-platform operating system for IoT devices. When reading the TCP MSS option value from an incoming packet, the Contiki-NG OS does not verify that certain buffer indices to read from are within the bounds of the IPv6 packet buffer, uip_buf. In particular, there is a 2-byte buffer read in the module os/net/ipv6/uip6.c. The buffer is indexed using 'UIP_IPTCPH_LEN + 2 + c' and 'UIP_IPTCPH_LEN + 3 + c', but the uip_buf buffer may not have enough data, resulting in a 2-byte read out of bounds. The problem has been patched in the "develop" branch of Contiki-NG, and is expected to be included in release 4.9. Users are advised to watch for the 4.9 release and to upgrade when it becomes available. There are no workarounds for this vulnerability aside from manually patching with the diff in commit `cde4e9839`.
INFO
Published Date :
June 9, 2023, 6:15 p.m.
Last Modified :
June 21, 2023, 1:18 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.4
Exploitability Score :
3.9
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2023-34100.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2023-34100 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-34100 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Jun. 21, 2023
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L Changed Reference Type https://github.com/contiki-ng/contiki-ng/pull/2434/commits/cde4e98398a2f5b994972c8459342af3ba93b98e No Types Assigned https://github.com/contiki-ng/contiki-ng/pull/2434/commits/cde4e98398a2f5b994972c8459342af3ba93b98e Patch Changed Reference Type https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-3v7c-jq9x-cmph No Types Assigned https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-3v7c-jq9x-cmph Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:contiki-ng:contiki-ng:*:*:*:*:*:*:*:* versions up to (including) 4.8
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-34100 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2023-34100
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.08 }} 0.01%
score
0.34314
percentile