Multiple vulnerabilities in the Login Enhancements (Login Block) feature of Cisco IOS Software could allow an unauthenticated, remote attack
Affects Cisco IOS Software 15.4(2)T, 15.4(3)M, or 15.4(2)CG and later when login quiet-mode access-class is configured before login block-for. Fixed releases are listed in Cisco's bug IDs.
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Listed in CISA KEV
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Actively exploited
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
Cisco IOS Software on Cisco devices with the Login Enhancements (Login Block) feature is affected. An unauthenticated remote attacker could exploit these flaws to force the device to reload, causing a denial of service.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
Multiple vulnerabilities in the Login Enhancements (Login Block) feature of Cisco IOS Software could allow an unauthenticated, remote attacker to trigger a reload of an affected system, resulting in a denial of service (DoS) condition. These vulnerabilities affect Cisco devices that are running Cisco IOS Software Release 15.4(2)T, 15.4(3)M, or 15.4(2)CG and later. Cisco Bug IDs: CSCuy32360, CSCuz60599.
Timeline
- CVE published
- Added to CISA KEV
CISA has evidence of exploitation in the wild
- CISA remediation deadline
Due date for US federal agencies to patch
- Record last updated
Affected versions
- n/a Cisco IOS
Cisco IOS
References 2
securityfocus.com
Questions about CVE-2018-0179
What does this mean?
An unauthenticated remote attacker can trigger a reload of the affected device, causing a denial-of-service condition.Source: sec.cloudapps.cisco.com
Am I affected, and how do I check?
The issue applies to Cisco IOS Software Release 15.4(2)T, 15.4(3)M, or 15.4(2)CG and later, where login quiet-mode access-class was configured before login block-for and the device has not been reloaded since. Check the device configuration for these commands and the release shown by the software version command.Source: sec.cloudapps.cisco.com
What should I do about it?
Consult the Cisco bug IDs listed at the top of the advisory for fixed software releases and upgrade to one of them.Source: sec.cloudapps.cisco.com
Is it being exploited?
Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2022-03-03, which means it has evidence of attacks. No public exploit code is tracked.Source: cisa.gov, cve.now feed data
What if there's no patch?
Configure login block-for before configuring login quiet-mode access-class, which is the documented workaround.Source: sec.cloudapps.cisco.com