CVE-2021-1128 Cisco IOS XR Software Unauthorized Information Disclosure Vulnerability
An authenticated local attacker can view sensitive configuration information beyond their privileges due to insufficient CLI parser restrictions.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-1128?
CVE-2021-1128 is a medium-severity vulnerability in Cisco Ios Xr, published on 4 Feb 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability in the CLI parser of Cisco IOS XR Software could allow an authenticated, local attacker to view more information than their privileges allow. The vulnerability is due to insufficient application of restrictions during the execution of a specific command. An attacker could exploit this vulnerability by using a specific command at the command line. A successful exploit could allow the attacker to obtain sensitive information within the configuration that otherwise might not have been accessible beyond the privileges of the invoking user.
Weakness: CWE-201
Which versions are affected by CVE-2021-1128?
It affects 1 product.
Products include Cisco Ios Xr.
How do I fix CVE-2021-1128?
No fix has been published for CVE-2021-1128 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-1128 being exploited?
There is no known exploitation of CVE-2021-1128 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-rcpm-5qw3-5cwf.