PT-2017-17641 · Contiki · Contiki Operating System

Alex Pop + 3 · Published 2017-05-28 · Updated 2017-06-06 · CVE-2017-7295

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Contiki Operating System version 3.0

Description A use-after-free issue exists in the httpd-simple.c file of the cc26xx-web-demo httpd, where the http state structure is not properly deallocated upon a connection close event. This results in a NULL pointer dereference in the output processing function, causing a board crash that can be exploited to perform a denial of service.

Recommendations For Contiki Operating System version 3.0, as a temporary workaround, consider disabling the httpd-simple.c module until a patch is available. Restrict access to the cc26xx-web-demo httpd to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this issue.

Fix

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

CVE-2017-7295

Affected Products

Contiki Operating System

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2017-7295 · Security Note
• https://osv.dev/vulnerability/CVE-2017-7295 · Vendor Advisory
• https://gist.github.com/jackmcbride/c9328627f1ee104ce84f3fb7eff42f1e · Note