CVE-2021-27697 Memory corruption in n/a

What is CVE-2021-27697?

CVE-2021-27697 is a critical memory corruption vulnerability in n/a, published on 6 Apr 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

RIOT-OS 2021.01 contains a buffer overflow vulnerability in sys/net/gnrc/routing/rpl/gnrc_rpl_validation.c through the gnrc_rpl_validation_options() function.

Weakness: CWE-120

Which versions are affected by CVE-2021-27697?

It affects 1 product.

Products include Riot-Os Riot.

How do I fix CVE-2021-27697?

No fix has been published for CVE-2021-27697 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2021-27697 being exploited?

There is no known exploitation of CVE-2021-27697 in the wild and no public exploit code.

Other vulnerabilities in n/a

• CVE-2024-32017 Buffer overflows in RIOT Critical 9.8
• CVE-2023-33975 RIOT-OS vulnerable to Out of Bounds Write in _rbuf_add Critical 9.8
• CVE-2023-24819 RIOT-OS vulnerable to Buffer Overflow during IPHC receive Critical 9.8
• CVE-2023-24823 RIOT-OS vulnerable to Packet Type Confusion during IPHC send Critical 9.8
• CVE-2021-27357 Memory corruption in n/a Critical 9.8

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-r2hp-m8f2-v2pc.