CVE-2016-6441 Memory corruption in Cisco IOS XE 3.17 and 3.18

Critical 9.8 Published 3 Nov 2016 Updated 6 Aug 2024

Unauthenticated remote attackers can execute code or cause a reload on Cisco ASR 900 Series routers via the TL1 interface.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2016-6441?

CVE-2016-6441 is a critical memory corruption vulnerability in Cisco Ios Xe, published on 3 Nov 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability in the Transaction Language 1 (TL1) code of Cisco ASR 900 Series routers could allow an unauthenticated, remote attacker to cause a reload of, or remotely execute code on, the affected system. This vulnerability affects Cisco ASR 900 Series Aggregation Services Routers (ASR902, ASR903, and ASR907) that are running the following releases of Cisco IOS XE Software: 3.17.0S 3.17.1S 3.17.2S 3.18.0S 3.18.1S. More Information: CSCuy15175. Known Affected Releases: 15.6(1)S 15.6(2)S. Known Fixed Releases: 15.6(1)S2.12 15.6(1.17)S0.41 15.6(1.17)SP 15.6(2)SP 16.4(0.183) 16.5(0.10).

Weakness: CWE-119

Which versions are affected by CVE-2016-6441?

It affects 1 product.

Products include Cisco Ios Xe.

How do I fix CVE-2016-6441?

No fix has been published for CVE-2016-6441 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-2016-6441 being exploited?

There is no known exploitation of CVE-2016-6441 in the wild and no public exploit code.

All Cisco Ios Xe vulnerabilities

Sources

Also known as GHSA-g5ff-5f8x-677m.