CVE-2021-21290
Public exploit available. Not confirmed exploited in the wild yet. A vendor fix is available.
What to do
The vendor has published a fix. Version details are below where the sources state them.
What it is
From the CVE record
Local Information Disclosure Vulnerability in Netty on Unix-Like systems
In plain language
No plain-language summary for this CVE yet.
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
1 source with a proof of concept or module.
Exploit links, PoCs and Metasploit modules after sign-in- EPSS
1.8% chance of exploitation activity in the next 30 days, which ranks it in the 77th percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
The patch came 471 days before any public exploit.
- OpenVAS check added
- Public exploit / PoCsource: github-poc
- Patch availablerecord updated
- Publishedweakness classified
Affected products
- banking corporate lending process managementEnterprise Software / itsm-monitoring
- banking credit facilities process managementEnterprise Software / itsm-monitoring
- banking trade finance process managementEnterprise Software / itsm-monitoring
- communications brm - elastic charging engineCommunications / messaging-chat
- communications design studioDatabases
- communications messaging serverCommunications / messaging-chat
- nosql databaseDatabases / nosql
And 5 more affected products. See all after sign-in
Technical detail
CVSS 3.1 vector
Open in the CVSS calculatorCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Scored 6.2 by NVD.
How it is reached
- Attack Vector LocalRequires local access to the vulnerable system (e.g. local login, malicious file)
- Attack Complexity LowNo special conditions — the attack can be reliably reproduced
- Privileges Required NoneNo authentication required — anyone can exploit this
- User Interaction NoneNo user interaction needed — fully automated exploitation
Scope
- Scope UnchangedImpact is limited to the vulnerable component itself
Impact if exploited
- Confidentiality HighTotal information disclosure — all data in the component is compromised
- Integrity NoneNo integrity impact
- Availability NoneNo availability impact
Weaknesses
Sources
References in the record
- github.com/netty/netty/security/advisories/GHSA-5mcr-gq6c-3hq2
- nvd.nist.gov/vuln/detail/CVE-2021-21290
- github.com/netty/netty/commit/c735357bf29d07856ad171c6611a2e1a0e0000ec
And 76 more references. See all after sign-in
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