CVE-2017-17840 Memory corruption in n/a
A local attacker can trigger buffer overflows in the iscsiuio server via malformed messages, leading to service crashes or arbitrary code execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-17840?
CVE-2017-17840 is a high-severity memory corruption vulnerability in n/a, published on 22 Dec 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An issue was discovered in Open-iSCSI through 2.0.875. A local attacker can cause the iscsiuio server to abort or potentially execute code by sending messages with incorrect lengths, which (due to lack of checking) can lead to buffer overflows, and result in aborts (with overflow checking enabled) or code execution. The process_iscsid_broadcast function in iscsiuio/src/unix/iscsid_ipc.c does not validate the payload length before a write operation.
Weakness: CWE-119
Which versions are affected by CVE-2017-17840?
It affects 1 product.
Products include Open-Iscsi Project Open-Iscsi.
How do I fix CVE-2017-17840?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2017-17840 being exploited?
There is no known exploitation of CVE-2017-17840 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2017-17840, GHSA-2mfv-hhmv-9rh8.