CVE-2021-27698

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

published April 6, 2021

CVSS
—
EPSS
1%
Percentile
68.8
In the wild
Unconfirmed
What it is

⚠️ A sneaky buffer overflow lurks in RIOT-OS 2021.01, hiding in the shadows of the _parse_options() function! Think of this vulnerability as a suitcase that’s packed too tightly — when you try to close it, the contents overflow, potentially spilling out things you’d rather keep inside. In the same way, a buffer overflow can let attackers inject unwanted data and manipulate the system. If exploited, this buffer overflow could lead to unexpected behavior in the routing protocol, potentially jeopardizing the stability of the network. While it’s not currently known to be exploited, the consequences could be serious enough to leave your system vulnerable to further attacks.

Put simply

Think of this vulnerability as a suitcase that’s packed too tightly — when you try to close it, the contents overflow, potentially spilling out things you’d rather keep inside. In the same way, a buffer overflow can let attackers inject unwanted data and manipulate the system. This buffer overflow vulnerability in the RIOT-OS affects how control messages are parsed in the routing layer, specifically in the _parse_options() function. If an attacker sends specially crafted input, it could overwrite memory and disrupt normal operations.

What to do

If exploited, this buffer overflow could lead to unexpected behavior in the routing protocol, potentially jeopardizing the stability of the network. While it’s not currently known to be exploited, the consequences could be serious enough to leave your system vulnerable to further attacks. To mitigate this vulnerability, ensure you update to the latest version of RIOT-OS where this issue is resolved. Additionally, implement input validation to safeguard against malformed control messages. You've got this! Stay proactive and keep your systems secure! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01236 · 68.8th percentile
Published
2021-04-06T12:08Z
EPSS history
Timeline
  • 06 APR 12:08Z
    RIOT-OS 2021.01 contains a buffer overflow vulnerability in /sys/net/gnrc/routing/rpl/gnrc_rpl_control_messages.c through the _parse_options() function
    cvelistv5