CVE-2019-1681 Cisco Network Convergence System 1000 Series TFTP Directory Traversal Vulnerability
Unauthenticated remote attackers can retrieve arbitrary files via TFTP directory traversal on Cisco NCS 1000 devices if the TFTP service is enabled.
- 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-2019-1681?
CVE-2019-1681 is a high-severity path traversal vulnerability in Cisco Ios Xr, published on 21 Feb 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the TFTP service of Cisco Network Convergence System 1000 Series software could allow an unauthenticated, remote attacker to retrieve arbitrary files from the targeted device, possibly resulting in information disclosure. The vulnerability is due to improper validation of user-supplied input within TFTP requests processed by the affected software. An attacker could exploit this vulnerability by using directory traversal techniques in malicious requests sent to the TFTP service on a targeted device. An exploit could allow the attacker to retrieve arbitrary files from the targeted device, resulting in the disclosure of sensitive information. This vulnerability affects Cisco IOS XR Software releases prior to Release 6.5.2 for Cisco Network Convergence System 1000 Series devices when the TFTP service is enabled.
Which versions are affected by CVE-2019-1681?
It affects 1 product.
Products include Cisco Ios Xr.
How do I fix CVE-2019-1681?
No fix has been published for CVE-2019-1681 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2019-1681 being exploited?
There is no known exploitation of CVE-2019-1681 in the wild and no public exploit code.
Other vulnerabilities in Cisco Ios Xr
- CVE-2020-3118 Cisco IOS XR Software Discovery Protocol Format String
- CVE-2020-3569 Cisco IOS XR Software DVMRP Memory Exhaustion
- CVE-2020-3566 Cisco IOS XR Software DVMRP Memory Exhaustion
- CVE-2010-3035 Cisco IOS XR Border Gateway Protocol (BGP) Denial-of-Service
- CVE-2022-20821 Cisco IOS XR Open Port
Sources
Also known as GHSA-6v3v-c95x-rpq9.