Service interruption via malformed MR PIM traffic
Published Nov 6, 2024 · Updated Nov 6, 2024
Denial of service in the EAAS feature of Cisco Enterprise Chat and Email allows remote attackers to interrupt chat and callback sessions. EAAS insufficiently validates crafted MR PIM traffic, letting malformed messages break the MR PIM connection between ECE and Unified CCE. Network reachability without authentication is sufficient; the outage persists after traffic stops until EAAS is manually restarted.
Summary
What happened
Denial of service in the EAAS feature of Cisco Enterprise Chat and Email allows remote attackers to interrupt chat and callback sessions. EAAS insufficiently validates crafted MR PIM traffic, letting malformed messages break the MR PIM connection between ECE and Unified CCE. Network reachability without authentication is sufficient; the outage persists after traffic stops until EAAS is manually restarted.
The record
- CVE
- CVE-2024-20484
- Published
- Nov 6, 2024
- Updated
- Nov 6, 2024
- Vendor
- ClamAV
- Product
- Cisco Enterprise Chat and Email
- Classifications
- CWE-20, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Nov 6, 2024CVE publishedPublication date reported by the CVE source.
- Nov 6, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=11.5(1)
- Affected versionversion=11.6(1)
- Affected versionversion=11.6(1)_ES10
- Affected versionversion=11.6(1)_ES11
- Affected versionversion=11.6(1)_ES12
- Affected versionversion=11.6(1)_ES12_ET1
- Affected versionversion=11.6(1)_ES2
- Affected versionversion=11.6(1)_ES3
- Affected versionversion=11.6(1)_ES4
- Affected versionversion=11.6(1)_ES5
- Affected versionversion=11.6(1)_ES6
- Affected versionversion=11.6(1)_ES7
- Affected versionversion=11.6(1)_ES9
- Affected versionversion=11.6(1)_ES9a
- Affected versionversion=12.0(1)
- Affected versionversion=12.0(1)_ES1
- Affected versionversion=12.0(1)_ES2
- Affected versionversion=12.0(1)_ES3
- Affected versionversion=12.0(1)_ES4
- Affected versionversion=12.0(1)_ES5
- Affected versionversion=12.0(1)_ES6
- Affected versionversion=12.0(1)_ES6_ET2
- Affected versionversion=12.0(1)_ES6_ET3
- Affected versionversion=12.0(1)_ES7
- Affected versionversion=12.0(1)_ES7_ET1
- Affected versionversion=12.5(1)_ES3
- Affected versionversion=12.5(1)_ES3_ET1
- Affected versionversion=12.5(1)_ES3_ET2
- Affected versionversion=12.5(1)_ES3_ET3
- Affected versionversion=12.5(1)_ES4_ET1
- Affected versionversion=12.5(1)_ES4_ET2
- Affected versionversion=12.5(1)_ES5
- Affected versionversion=12.5(1)_ES5_ET1
- Affected versionversion=12.5(1)_ES5_ET2
- Affected versionversion=12.5(1)_ES6_ET1
- Affected versionversion=12.5(1)_ES7
- Affected versionversion=12.5(1)_ES7_ET1
- Affected versionversion=12.5(1)_ES8
- Affected versionversion=12.5(1)_ES8_ET1
- Affected versionversion=12.5(1)_ET1
- Affected versionversion=12.6(1)
- Affected versionversion=12.6(1)_ES1
- Affected versionversion=12.6(1)_ES1_ET1
- Affected versionversion=12.6(1)_ES1_ET2
- Affected versionversion=12.6(1)_ES2
- Affected versionversion=12.6(1)_ES2_ET5
- Affected versionversion=12.6(1)_ES3
- Affected versionversion=12.6(1)_ES3_ET3
- Affected versionversion=12.6(1)_ES4
- Affected versionversion=12.6(1)_ES4_ET1
- Affected versionversion=12.6(1)_ES4_ET2
- Affected versionversion=12.6(1)_ES5
- Affected versionversion=12.6(1)_ES5_ET1
- Affected versionversion=12.6(1)_ES5_ET2
- Affected versionversion=12.6(1)_ES5_ET3
- Affected versionversion=12.6(1)_ES6
- Affected versionversion=12.6(1)_ES6_ET1
- Affected versionversion=12.6(1)_ES6_ET2
- Affected versionversion=12.6(1)_ES6_ET3
- Affected versionversion=12.6(1)_ES7
- Affected versionversion=12.6(1)_ES7_ET1
- Affected versionversion=12.6(1)_ES8
- Affected versionversion=12.6(1)_ES8_ET1
- Affected versionversion=12.6(1)_ES8_ET2
- Affected versionversion=12.6(1)_ES9
- Affected versionversion=12.6(1)_ES9_ET1
- Affected versionversion=12.6(1)_ET1
- Affected versionversion=12.6(1)_ET2
- Affected versionversion=12.6(1)_ET3
- Affected versionversion=12.6_ES2_ET1
- Affected versionversion=12.6_ES2_ET2
- Affected versionversion=12.6_ES2_ET3
- Affected versionversion=12.6_ES2_ET4
- Affected versionversion=12.6_ES3_ET1
- Affected versionversion=12.6_ES3_ET2
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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