PT-2020-11255 · Contiki · Contiki-Ng+1

Tobias Scharnowski · Published 2020-04-23 · Updated 2020-05-01 · CVE-2019-8359

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Contiki-NG versions 4.3 and earlier Contiki versions 3.0 and earlier

Description An issue is present in the data section during 6LoWPAN fragment re-assembly due to forged fragment offsets in os/net/ipv6/sicslowpan.c, resulting in an out of bounds write.

Recommendations For Contiki-NG versions 4.3 and earlier, consider updating to a version that addresses the out of bounds write issue in os/net/ipv6/sicslowpan.c. For Contiki versions 3.0 and earlier, consider updating to a version that addresses the out of bounds write issue in os/net/ipv6/sicslowpan.c. As a temporary workaround, consider restricting the use of the sicslowpan.c module until a patch is available.

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2019-8359

Affected Products

Contiki

Contiki-Ng

References · 6

• https://github.com/contiki-ng/contiki-ng/pull/972 · Patch
• https://osv.dev/vulnerability/CVE-2019-8359 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-8359 · Security Note
• https://github.com/contiki-ng/contiki-ng/releases/tag/release%2Fv4.4 · Note
• https://usenix.org/system/files/sec20summer_clements_prepub.pdf · Note
• https://t.me/cvenotify/3093 · Telegram Post